Command Reference Guide

Administering Quality of Service (QoS) and RSVP

Quality of Service (QoS) and the Resource Reservation Protocol (RSVP) are advanced features that provide policy-based services. Policy-based services establish various grades of network services to accommodate the needs of different types of traffic (for example, multimedia, video, and file backups). QoS software relies on RSVP to provide admission control.

This chapter provides guidelines and other key information about how to configure QoS and RSVP in your system.

QoS and RSVP features include classifiers, controls, and RSVP parameters. Configure these features in the following order:

You first enter the command "qos classifier define" to define how the system groups packets so it can schedule them with the appropriate service level.
You then enter the command "qos control define" to assign rate limits and priorities to the packets associated with one or more of your classifiers. A classifier has no effect until it is associated with a control.

The system provides predefined classifiers and controls that are suitable for many configurations, or you can define your own classifiers, apply controls to the classifiers, and then decide whether to use RSVP. For more information about QoS and RSVP, see the Implementation Guide for your system.

For the CoreBuilder 9000: The commands in this chapter apply only to Layer 3 switching modules.

Menu Structure

The commands that you can use depend on the system that you have, your level of access, and the types of modules and other hardware options that are configured for your system. The following diagram shows the complete list of commands for all systems. See the checklist at the beginning of each command description in this chapter for whether your system supports the command.

qos classifier summary

Field	Description
802.1p	For nonflow classifiers, IEEE 802.1p tag value
Cast	Cast type for the classifier: Flow classifiers: `unicast`, `multicast`, or `all` Nonflow classifiers: `unicast`, `multicast`, `broadcast`, or `all`
Classifier	Number of the flow or nonflow classifier: Flow classifiers in the range of `1 - 399` (Note: `20` and `23` are predefined.) Nonflow classifiers in the range of `400 - 498` (Note: `401 - 407`, `420, 430, 440, 450, 460, 470, 480,` and `490` are predefined, but they can be modified or removed.)
Control	Number of the control applied to the classifier
Name	Name assigned to the classifier
Protocol	Protocol type, if applicable, associated with the classifier/control: Flow classifiers: IP protocol type `TCP`, `UDP`, or `all` Nonflow classifiers: `TCP`, `IP`, `IPX`, `AppleTalk`, or `any`

qos classifier detail

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays detailed information about one or more QoS classifiers.

Valid Minimum Abbreviation

: q cl det

Options

Prompt

Description

Possible Values

[Default]

Classifier number

Number of the classifier for which you want detail information

One or more numbers of configured classifiers
all
? (for a list of selectable classifiers)

-

Prompt	Description	Possible Values	[Default]
Classifier number	Number of the classifier for which you want detail information	One or more numbers of configured classifiers all ? (for a list of selectable classifiers)	-

Fields in the QoS Classifier Detail Display

Field

Description

802.1p

For nonflow classifiers, IEEE 802.1p tag value (any combination of priority tag values in the range 0 - 7)

Cast

The Cast type for the classifier:

Flow classifiers: unicast, multicast, or all
Nonflow classifiers: unicast, multicast, broadcast, or all

Classifier

Number of the flow or nonflow classifier:

Flow classifiers in the range of 1 - 399 (Note: 20 and 23 are predefined.)
Nonflow classifiers in the range of 400 - 498 (Note: 401 - 407, 420, 430, 440, 450, 460, 470, 480, and 490 are predefined, but they can be modified or removed.)

Classifier - Filters

Filters (address and port patterns):

source IP address
source IP address mask
destination IP address
destination IP address mask
TCP or UDP port range

Classifier - Installed Flows (if flows exist)

Actual flows seen on the system, with the following data:

port
source IP address/source port
destination IP address /destination port
protocol type
number of flow cache misses

Control

Control number of the control that is applied to the classifier

Name

Name that is assigned to the classifiers that you specified

Protocol

Protocol type, if applicable, that is associated with the classifier and control

Field	Description
802.1p	For nonflow classifiers, IEEE 802.1p tag value (any combination of priority tag values in the range `0 - 7)`
Cast	The Cast type for the classifier: Flow classifiers: `unicast`, `multicast`, or `all` Nonflow classifiers: `unicast`, `multicast`, `broadcast`, or `all`
Classifier	Number of the flow or nonflow classifier: Flow classifiers in the range of 1 `- 399` (Note: `20` and `23` are predefined.) Nonflow classifiers in the range of `400 - 498` (Note: `401 - 407`, `420, 430, 440, 450, 460, 470, 480,` and `490` are predefined, but they can be modified or removed.)
Classifier - Filters	Filters (address and port patterns): source IP address source IP address mask destination IP address destination IP address mask TCP or UDP port range
Classifier - Installed Flows (if flows exist)	Actual flows seen on the system, with the following data: port source IP address/source port destination IP address /destination port protocol type number of flow cache misses
Control	Control number of the control that is applied to the classifier
Name	Name that is assigned to the classifiers that you specified
Protocol	Protocol type, if applicable, that is associated with the classifier and control

qos classifier define

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Defines a flow or nonflow classifier.

Valid Minimum Abbreviation

: q cl def

Important Considerations

Classifiers define how the system groups packets so that it can schedule them with the appropriate service level. QoS supports flow and nonflow classifiers:
- Flow classifiers apply to routed IP multicast and IP unicast packets. You can define up to 100 flow classifiers. Each filter (address and port pattern) in a flow classifier counts toward the limit.
- Nonflow classifiers apply to bridged or routed traffic that is associated with a specific protocol (IP, TCP/IP, IPX, and AppleTalk) or to any protocol. You can also use them to apply IEEE 802.1p tag values to forwarded frames. You can define up to 16 nonflow classifiers. All 16 nonflow classifiers are in use by default.
The default classifier number is 499. You cannot remove or modify this default classifier. However, you can remove any of the predefined classifiers (for example, if you need another nonflow classifier). See the command "qos classifier remove" later in this chapter for more information.
Before a classifier that is associated with a protocol such as IP can work, you must define a VLAN that supports the protocol, regardless of whether you are bridging or routing. (See Chapter 13.)
When you define a filter (address and port pattern) for a flow classifier, select a start and end port range that is as small as possible (for example, a single port). If the classifier applies to a wide range of TCP or UDP ports, you increase the amount of classified traffic on the system and consume valuable QoS resources.
A classifier can have only one control applied to it.

Options

Prompt

Description

Possible Values

[Default]

Classifier number

Number of the flow or nonflow classifier in the range of 1 to 498

Flow classifiers: 1 to 399 except 20 and 23, which are predefined flow classifiers
Nonflow classifiers: 400 - 498, except 401 - 407, 420, 430, 440, 450, 460, 470, 480, and 490. (401 - 407 are predefined nonflow classifiers with applied controls and IEEE 802.1p tag values of 1 - 7.)

-

Classifier name

User-defined name that is assigned to the classifier

Unique name with up to 32 characters

-

Cast type

Cast type for the flow or nonflow classifier

Flow classifiers: unicast, multicast, or all
Nonflow classifiers: unicast, multicast, broadcast, or all

-

Protocol type

IP or other protocol type, if applicable, that you want to associate with the flow or nonflow classifier

Flow classifiers: IP protocol type with TCP, UDP, or all
Nonflow classifiers: TCP, IP, IPX, AppleTalk, or any

-

Source IP address

For flow classifiers only, IP address of the source

Up to 255.255.255.255

0.0.0.0 (factory default, wildcard match)

Source IP address mask

For flow classifiers only, source IP address mask, or how many portions of the IP address you want to match. (Example: 255.255.255.0 matches the first three portions of the specified IP address.)

Up to four portions (255.255.255.255)

0.0.0.0 (factory default, wildcard match)

Destination IP address

For flow classifiers only, destination IP address

Up to 255.255.255.255

0.0.0.0 (factory default, wildcard match)

Destination IP address mask

For flow classifiers only, destination IP address mask, or how many portions of the address you want to match

Up to four portions (255.255.255.255)

0.0.0.0 (factory default, wildcard match)

Start and end of TCP or UDP port range

For flow classifiers only, start and end of the TCP or UDP port range. The value for start determines the value for end.

0 - 65535

0 and 65535 (factory defaults)

Additional filter (address/port pattern)

For flow classifiers only, additional source, destination, and port information for this classifier

y (yes)
n (no)

n

802.1p tag

For nonflow classifiers only, IEEE 802.1p tag value(s)

Any combination of priority tag values in the range of 0 - 7

-

Prompt	Description	Possible Values	[Default]
Classifier number	Number of the flow or nonflow classifier in the range of 1 to 498	Flow classifiers: 1 to 399 except 20 and 23, which are predefined flow classifiers Nonflow classifiers: 400 - 498, except 401 - 407, 420, 430, 440, 450, 460, 470, 480, and 490. (401 - 407 are predefined nonflow classifiers with applied controls and IEEE 802.1p tag values of 1 - 7.)	-
Classifier name	User-defined name that is assigned to the classifier	Unique name with up to 32 characters	-
Cast type	Cast type for the flow or nonflow classifier	Flow classifiers: unicast, multicast, or all Nonflow classifiers: unicast, multicast, broadcast, or all	-
Protocol type	IP or other protocol type, if applicable, that you want to associate with the flow or nonflow classifier	Flow classifiers: IP protocol type with TCP, UDP, or all Nonflow classifiers: TCP, IP, IPX, AppleTalk, or any	-
Source IP address	For flow classifiers only, IP address of the source	Up to 255.255.255.255	0.0.0.0 (factory default, wildcard match)
Source IP address mask	For flow classifiers only, source IP address mask, or how many portions of the IP address you want to match. (Example: 255.255.255.0 matches the first three portions of the specified IP address.)	Up to four portions (255.255.255.255)	0.0.0.0 (factory default, wildcard match)
Destination IP address	For flow classifiers only, destination IP address	Up to 255.255.255.255	0.0.0.0 (factory default, wildcard match)
Destination IP address mask	For flow classifiers only, destination IP address mask, or how many portions of the address you want to match	Up to four portions (255.255.255.255)	0.0.0.0 (factory default, wildcard match)
Start and end of TCP or UDP port range	For flow classifiers only, start and end of the TCP or UDP port range. The value for start determines the value for end.	0 - 65535	0 and 65535 (factory defaults)
Additional filter (address/port pattern)	For flow classifiers only, additional source, destination, and port information for this classifier	y (yes) n (no)	n
802.1p tag	For nonflow classifiers only, IEEE 802.1p tag value(s)	Any combination of priority tag values in the range of `0 - 7`	-

Flow Classifier Procedure

Press Return or Enter to accept the default or current values that appear in brackets [ ].

1 . Enter a classifier number in the range of from 1 to 399.

: Note that 20 and 23 are predefined flow classifiers for FTP and Telnet.

2 . Enter the classifier name (a unique name of up to 32 characters long).

3 . Select a cast type.

: For a flow classifier, the options are unicast, multicast, and all.

4 . Select the IP protocol type of TCP, UDP, or all.

5 . Enter the source IP address. The default value is 0.0.0.0.

6 . Enter the source IP address mask. The default value is 0.0.0.0.

7 . Enter the destination IP address.

8 . Enter the destination IP address mask.

9 . Enter the start of the TCP or UDP port range, in the range of from 0 through 65535. The default is 0.

10 . Enter the end of the TCP or UDP port range using a value of up to 65535.

: The value that you enter for the start of the range determines the default for the end of the range.
To avoid severely affecting applications using the network, select a port range that is as small as possible (for example, a single port).

11 . At the prompt, specify whether you want any other filters (address and port patterns) with this classifier (yes or no). The default is no.

: If you specify yes, the system prompts you for additional information, beginning with the source IP address.

Flow classifiers classify traffic only at the network layer and therefore affect only traffic that is being routed from one subnetwork to another.

QoS Classifier Define Example (Flow Classifier)

: Select menu option (qos/classifier): define
: Enter classifier number (1-498): 26
: Enter classifier name {?}: IPFilter1
: Select cast type (unicast,multicast|all|?): all
: Select IP protocol type (TCP,UDP|all|?): all
: Enter source IP address [0.0.0.0]:168.20.30.0
: Enter source IP address mask [255.255.0.0]:255.255.255.0
: Enter destination IP address [0.0.0.0]:192.1.0.0
: Enter IP address mask [255.255.255.0]:255.255.0.0
: Enter start of UDP port range (0-65535) [0]:0
: Enter end of UDP port range (2049-65535) [65535]:65535

Enter another filter (yes,no) [no]: n

Nonflow Classifier Procedure

Press Return or Enter to accept the default or existing values that appear in brackets [ ].

1 . Enter a classifier number in the range of from 400 through 498.

: Numbers 401 through 407 are predefined nonflow classifiers with applied controls; numbers 420, 430, 440, 450, 460, 470, 480, and 490 are predefined nonflow classifiers without controls. If you have not removed any of the predefined nonflow classifiers, you need to remove them before you can define another nonflow classifier. (With the default classifier, there is a limit of 16 predefined nonflow classifiers.)

2 . Enter the classifier name (a unique name of up to 32 characters long).

3 . Select a cast type.

: For a nonflow classifier, the options are unicast, multicast, broadcast, and all.

4 . Select one or any protocols.

: The options are TCP/IP, IP, IPX, Appletalk, or any.
Before a classifier that is associated with a protocol can work, you must define a VLAN for that protocol. (See Chapter 13.)

5 . Select one or all IEEE 802.1p tags. Specify any combination of values in the range of from 0 through 7, or all.

QoS Classifier Define Example (Nonflow Classifier)

: Select menu option (qos/classifier): define
: Enter classifier number (1-498): 481
: Enter classifier name {?}: AppleBcast
: Select cast type (unicast,multicast,broadcast|all|?): broadcast
: Select protocols {TCP/IP,IP,IPX,Appletalk,any|?}: Appletalk
: Select IEEE 802.1p tag(s) (0-7|all|?): all
qos classifier modify

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Modifies a previously defined classifier.

Valid Minimum Abbreviation

: q cl m

Important Considerations

If the classifier that you want to modify is associated with a control, you must remove the control before you can modify the classifier. See "qos classifier remove" later in this chapter for more information.
If you have existing filters (address and port patterns) for flow classifiers, you must specify all of them again during the modification process. Any address and port patterns that you do not reenter are deleted.

Options

Prompt

Description

Possible Values

[Default]

Classifier number

Number of the flow or nonflow classifier that you want to modify. Existing classifiers are shown in braces.

Flow classifiers: 1 through 399 except 20 and 23, which are predefined flow classifiers
Nonflow classifiers: 400 to 498, except 401 - 407, 420, 430, 440, 450, 460, 470, 480, 490. (401 - 407 are predefined nonflow classifiers with applied controls.)

-

Classifier name

Name assigned to the classifier that you want to modify

Unique name with up to 32 characters

Current name

Cast type

Cast type for the flow or nonflow classifier

Flow classifiers: unicast, multicast, or all
Nonflow classifiers: unicast, multicast, broadcast, or all

Current cast type

Protocol type

IP or other protocol type, if applicable, associated with the flow or nonflow classifier

Flow classifiers: IP protocol type with TCP, UDP, or all
Nonflow classifiers: TCP, IP, IPX, AppleTalk, or any

Current protocol type

Source IP address

For flow classifiers only, IP address of the source

Up to 255.255.255.255

0.0.0.0 (factory default, wildcard match), or current value

Source IP address mask

For flow classifiers only, source IP address mask, or how many portions of the IP address you want to match. Example: 255.255.255.0 matches the first three portions of the specified IP address.

Up to four portions (255.255.255.255)

0.0.0.0 (factory default, wildcard match), or current value

Destination IP address

For flow classifiers only, destination IP address

Up to 255.255.255.255

0.0.0.0 (factory default), or current value

Destination IP address mask

For flow classifiers only, destination IP address mask, or how many portions of the IP address you want to match

Up to four portions (255.255.255.255)

0.0.0.0 (factory default), or current value

Start and end of TCP or UDP port range

For flow classifiers only, start and end of the TCP or UDP port range.
Specify as small a range as possible. The value for start determines the value for end.

0 - 65535 for start range

0 and 65535 (factory defaults), or current values

Additional filters (address/port patterns)

For flow classifiers only, additional source, destination, and port information for this classifier. Each set of information counts toward the classifier limit.

y (yes), n (no)

no (factory default)

802.1p tag

For nonflow classifiers only, the IEEE 802.1p tag value

Any combination of priority tag values in the range of 0 - 7

Current value, if any

Prompt	Description	Possible Values	[Default]
Classifier number	Number of the flow or nonflow classifier that you want to modify. Existing classifiers are shown in braces.	Flow classifiers: 1 through 399 except 20 and 23, which are predefined flow classifiers Nonflow classifiers: 400 to 498, except 401 - 407, 420, 430, 440, 450, 460, 470, 480, 490. (401 - 407 are predefined nonflow classifiers with applied controls.)	-
Classifier name	Name assigned to the classifier that you want to modify	Unique name with up to 32 characters	Current name
Cast type	Cast type for the flow or nonflow classifier	Flow classifiers: unicast, multicast, or all Nonflow classifiers: unicast, multicast, broadcast, or all	Current cast type
Protocol type	IP or other protocol type, if applicable, associated with the flow or nonflow classifier	Flow classifiers: IP protocol type with TCP, UDP, or all Nonflow classifiers: TCP, IP, IPX, AppleTalk, or any	Current protocol type
Source IP address	For flow classifiers only, IP address of the source	Up to 255.255.255.255	0.0.0.0 (factory default, wildcard match), or current value
Source IP address mask	For flow classifiers only, source IP address mask, or how many portions of the IP address you want to match. Example: 255.255.255.0 matches the first three portions of the specified IP address.	Up to four portions (255.255.255.255)	0.0.0.0 (factory default, wildcard match), or current value
Destination IP address	For flow classifiers only, destination IP address	Up to 255.255.255.255	0.0.0.0 (factory default), or current value
Destination IP address mask	For flow classifiers only, destination IP address mask, or how many portions of the IP address you want to match	Up to four portions (255.255.255.255)	0.0.0.0 (factory default), or current value
Start and end of TCP or UDP port range	For flow classifiers only, start and end of the TCP or UDP port range. Specify as small a range as possible. The value for start determines the value for end.	0 - 65535 for start range	0 and 65535 (factory defaults), or current values
Additional filters (address/port patterns)	For flow classifiers only, additional source, destination, and port information for this classifier. Each set of information counts toward the classifier limit.	y (yes), n (no)	no (factory default)
802.1p tag	For nonflow classifiers only, the IEEE 802.1p tag value	Any combination of priority tag values in the range of 0 - 7	Current value, if any

Procedure (Flow Classifier)

1 . Enter the classifier number. The current numbers are shown in braces { }.

2 . Enter the classifier name.

: The name that is associated with the number that you specified is shown in brackets.

3 . To modify the cast type, select a new cast type.

: For a flow classifier, the options are unicast, multicast, and all.
: To accept the current cast type, shown in brackets, press Return.

4 . To modify the IP protocol type, select another IP protocol type (TCP, UDP, or all).

: To accept the current protocol type, shown in brackets, press Return.

5 . To modify the current source IP address, enter a new source IP address.

: To accept the default (the existing source IP address), shown in brackets, press Return.

6 . To modify the current source IP address mask, enter a new source IP address mask.

7 . To modify the current destination IP address, enter a new destination IP address.

8 . To modify the current destination IP address mask, enter a new destination IP address mask.

9 . To modify the TCP or UDP port range, enter the new start of the TCP or UDP port range (in the range of from 0 through 65535).

: Limit the port range as much as possible.

10 . Enter the new end of the TCP or UDP port range (in the range of from 0 through 65535).

11 . At the prompt, specify whether you want any other address and port patterns (filters) with this classifier: yes or no; the default is no.

: If you specify yes, the system prompts you for additional filtering information, beginning with the source IP address.

If you have several existing address and port patterns, you must specify all of them again during the modification process. Any address and port patterns that you do not reenter are deleted.

Nonflow Classifier Procedure

1 . To modify the cast type, select a new cast type.

: For a nonflow classifier, the options are unicast, multicast, broadcast, and all

2 . To modify the associated protocols, select another protocol.

: The options are TCP/IP, IP, IPX, Appletalk, or any. If you modify the protocol type, you must have a VLAN defined for that protocol type. (See Chapter 13.)

3 . To modify the handling of IEEE 802.1p tags, select the appropriate tags using a value in the range of 0 through 7, or specify all.

QoS Classifier Modify Example (Flow Classifier)

: Select menu option (qos/classifier): modify
: Enter classifier number
: {20,23,26,401-407,420,430,440, 450, 460, 470,480,490|?}:26
: Enter classifier name {?} [IPFilter1]:
: Select cast type (unicast,multicast|all|?) [unicast,multicast]:
: Select IP protocol type (TCP,UDP|all|?) [TCP,UDP]:
: Enter source IP address [168.20.30.0]:
: Enter source IP address mask [255.255.255.0]:
: Enter destination IP address [192.1.0.0]:192.1.1.0
: Enter IP address mask [255.255.255.0]:
: Enter start of UDP port range (0-65535) [0]:
: Enter end of UDP port range (2049-65535) [65535]:

Enter another filter (yes,no) [no]: n

qos classifier remove

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Removes a previously defined classifier.

Valid Minimum Abbreviation

: q cl r

Important Considerations

If the classifier that you want to remove is associated with a control, you must remove the control before you can remove the classifier. See "qos control remove" later in this chapter for more information.
When you issue the command, specify the number that represents the classifier that you want to remove, or specify ? to view the selectable classifiers.

Options

Prompt

Description

Possible Values

[Default]

Classifier number

Number for the classifier that you want to remove

Any selectable classifier number (depends on the configured classifiers)
? (for a list of selectable classifiers)

-

Prompt	Description	Possible Values	[Default]
Classifier number	Number for the classifier that you want to remove	Any selectable classifier number (depends on the configured classifiers) ? (for a list of selectable classifiers)	-

QoS Classifier Remove Example (3500)

: Select menu option: qos classifier remove
: Enter classifier number {20,23,26,401-407,420,430,440,450,460,470,480,490|?}:26
qos control summary

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays summary information about QoS controls.

Valid Minimum Abbreviation

: q co s

Fields in the QoS Control Summary Display

T

Field

Description

802.1p Tag

For controls for nonflow classifiers, the IEEE 802.1p tag value (0 - 7)

Classifiers controlled

Classifiers that are affected by this control

Control (number)

Number of the control

Control name

Name of the control

Excess loss eligible

For receivePort or aggregate rate limit types, whether excess packets are loss eligible

Excess service

For receivePort or aggregate rate limit types, the service level for excess packets

Loss eligible

Whether conforming packets are loss eligible. If a packet is loss eligible, it can be dropped if the transmit queue for which it is destined exceeds its threshold.

Service

Service level for the conforming packets

Field	Description
802.1p Tag	For controls for nonflow classifiers, the IEEE 802.1p tag value (0 - 7)
Classifiers controlled	Classifiers that are affected by this control
Control (number)	Number of the control
Control name	Name of the control
Excess loss eligible	For receivePort or aggregate rate limit types, whether excess packets are loss eligible
Excess service	For receivePort or aggregate rate limit types, the service level for excess packets
Loss eligible	Whether conforming packets are loss eligible. If a packet is loss eligible, it can be dropped if the transmit queue for which it is destined exceeds its threshold.
Service	Service level for the conforming packets

qos control detail

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays detailed information about the QoS controls you specify.

Valid Minimum Abbreviation

: q co det

Options

Prompt

Description

Possible Values

[Default]

Control number

Number of the control for which you want detail information

One or more configured controls
all
? (for a list of selectable controls)

-

Prompt	Description	Possible Values	[Default]
Control number	Number of the control for which you want detail information	One or more configured controls all ? (for a list of selectable controls)	-

Fields in the QoS Control Detail Display

Field

Description

802.1p tag

IEEE 802.1p priority tag value (0 to 7) applied to forwarded frames. Can be defined for both flow and nonflow classifiers.

Burst

Burst size in KBytes

Classifiers controlled

Classifiers that are affected by this control

Control (number)

Number of the control

Control name

Name that you assign to the control

Excess loss eligible

For receivePort or aggregate rate limit types, whether excess packets are loss eligible

Excess service

For receivePort or aggregate rate limit type, service level for excess packets

Limit

Rate limit in KBytes/sec or percentage

Loss eligible

Whether conforming packets are loss eligible. A loss-eligible packet can be dropped if the transmit queue for which it is destined is over its threshold.

Ports

Receive ports for which you want to enable the rate limit

Rate limits control

Number of the control that is affected by the rate limit

Service

Service level for the conforming packets (high, best, low, or drop)

Type

Rate limit type, either none (no rate limit), receivePort, or aggregate

Field	Description
802.1p tag	IEEE 802.1p priority tag value (`0` to `7)` applied to forwarded frames. Can be defined for both flow and nonflow classifiers.
Burst	Burst size in KBytes
Classifiers controlled	Classifiers that are affected by this control
Control (number)	Number of the control
Control name	Name that you assign to the control
Excess loss eligible	For receivePort or aggregate rate limit types, whether excess packets are loss eligible
Excess service	For receivePort or aggregate rate limit type, service level for excess packets
Limit	Rate limit in KBytes/sec or percentage
Loss eligible	Whether conforming packets are loss eligible. A loss-eligible packet can be dropped if the transmit queue for which it is destined is over its threshold.
Ports	Receive ports for which you want to enable the rate limit
Rate limits control	Number of the control that is affected by the rate limit
Service	Service level for the conforming packets (`high`, `best`, `low`, or `drop`)
Type	Rate limit type, either `none` (no rate limit), `receivePort`, or `aggregate`

qos control define

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Defines a control for one or more existing classifiers.

Valid Syntax

: q co def

Important Considerations

A control can assign multiple rate limit values and an IEEE 802.1p priority tag value to the packets that are associated with one or more classifiers.
The system prompts you according to the rate limit type you select. You can only use one rate limit type (none, receivePort, or aggregate) per control. For a type of receivePort or aggregate, you can specify multiple rate-limit values for groups of ports or individual ports.
Loss-eligible packets are conforming packets that are discarded instead of queued when transmit queues back up beyond a threshold. You can specify whether conforming packets (as well as nonconforming excess packets) are loss eligible when you define the control. Marking packets loss eligible is useful for an intelligent discard of traffic in a congestion situation. Nonconforming excess packets are packets that exceed the specified rate limit.

Options

T

Prompt

Description

Possible Values

[Default]

Control number

Number of the control. The default control is 1; 2 - 4 are predefined controls.

5 - 50

Next available control number

Control name

Name that you assign to the control. Predefined names are as follows:

Default (for control 1)
Background (for control 2)
Business Critical (for control 3)
Controlled Load (for control 4)

Unique name with up to 32 characters

-

Rate limit type

Type of rate limit type:

none (no rate limit)
receivePort (a rate limit on the specified ports)
aggregate (the bandwidth for all ports chosen for the associated classifier)

none
receivePort
aggregate

none (factory default)

Service level

Service level for the conforming packets (a transmit priority that corresponds to a transmit queue).
Drop causes the system to drop all traffic on all ports associated with the classifier and control.

For receivePort or aggregate: high, best (best effort), or low
For a rate limit of none: high, best, low, or drop

best (factory default)

Loss eligible

Whether conforming packets are loss eligible. A loss-eligible packet can be dropped if the transmit queue for which it is destined exceeds its threshold.

y (yes)
n (no)

no (factory default)

Excess packet service

For receivePort or aggregate rate limit types, indicates the service level for excess packets (packets that exceed the rate limit)

high
best
low
drop

best (factory default)

Excess loss eligible

For receivePort or aggregate rate limit types, whether excess packets are loss eligible

y (yes)
n (no)

yes (factory default)

How rate limit is expressed

Format of the rate limit, in KBytes/sec or percentage

KBytes/sec
percentage

KBytes/sec (factory default)

Rate limit value

Rate limit in KBytes/sec or percentage.
0 makes all packets excess packets

0 - 65434 KBytes
0 - 100 percent

-

Burst size

Maximum amount of data that you can transmit at the line rate before the transmission is policed; in Kbytes

16 - 8192 KBytes

Determined by your specified rate limit

Bridge ports

Receive ports for which you want to enable the rate limit. If you specify a subset of ports, you can specify multiple rate limit values.
On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.

Any subset of selectable ports
all selectable ports
? (for a list of selectable ports

Selectable ports

Apply another rate limit?

If you specified a subset of available ports, whether you want to define another rate limit for other ports

y (yes)
n (no)

n

802.1p tag

IEEE 802.1p priority tag value to apply to forwarded frames (for both flow and nonflow classifiers)

0 - 7

none (factory default)

Classifiers to be controlled

Classifiers to be affected by this control. See "qos control summary" for a list of defined classifiers associated with controls.

Selectable classifiers (that is, those not already associated with a control)

-

Prompt	Description	Possible Values	[Default]
Control number	Number of the control. The default control is 1; 2 - 4 are predefined controls.	5 - 50	Next available control number
Control name	Name that you assign to the control. Predefined names are as follows: Default (for control 1) Background (for control 2) Business Critical (for control 3) Controlled Load (for control 4)	Unique name with up to 32 characters	-
Rate limit type	Type of rate limit type: none (no rate limit) receivePort (a rate limit on the specified ports) aggregate (the bandwidth for all ports chosen for the associated classifier)	none receivePort aggregate	none (factory default)
Service level	Service level for the conforming packets (a transmit priority that corresponds to a transmit queue). Drop causes the system to drop all traffic on all ports associated with the classifier and control.	For receivePort or aggregate: high, best (best effort), or low For a rate limit of none: high, best, low, or drop	best (factory default)
Loss eligible	Whether conforming packets are loss eligible. A loss-eligible packet can be dropped if the transmit queue for which it is destined exceeds its threshold.	y (yes) n (no)	no (factory default)
Excess packet service	For receivePort or aggregate rate limit types, indicates the service level for excess packets (packets that exceed the rate limit)	high best low drop	best (factory default)
Excess loss eligible	For receivePort or aggregate rate limit types, whether excess packets are loss eligible	y (yes) n (no)	yes (factory default)
How rate limit is expressed	Format of the rate limit, in KBytes/sec or percentage	KBytes/sec percentage	KBytes/sec (factory default)
Rate limit value	Rate limit in KBytes/sec or percentage. 0 makes all packets excess packets	0 - 65434 KBytes 0 - 100 percent	-
Burst size	Maximum amount of data that you can transmit at the line rate before the transmission is policed; in Kbytes	16 - 8192 KBytes	Determined by your specified rate limit
Bridge ports	Receive ports for which you want to enable the rate limit. If you specify a subset of ports, you can specify multiple rate limit values. On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.	Any subset of selectable ports all selectable ports ? (for a list of selectable ports	Selectable ports
Apply another rate limit?	If you specified a subset of available ports, whether you want to define another rate limit for other ports	y (yes) n (no)	n
802.1p tag	IEEE 802.1p priority tag value to apply to forwarded frames (for both flow and nonflow classifiers)	0 - 7	none (factory default)
Classifiers to be controlled	Classifiers to be affected by this control. See "qos control summary" for a list of defined classifiers associated with controls.	Selectable classifiers (that is, those not already associated with a control)	-

Procedure

1 . Enter a control number.

: The valid range is 5 through 50, with the next available number as the default.

2 . Enter a control name.

3 . Enter the rate limit type: none, receivePort, or aggregate.

: The default is none. A rate limit type of none specifies no rate limit; receivePort specifies a rate limit on the ports specified; and aggregate refers to the bandwidth for all ports chosen for the classifier. To drop all conforming packets for a set of ports, use receivePort or aggregate, set the rate limit to 0, and specify the appropriate set of ports.
Aggregate rate limits can be applied only to flow classifiers.

4 . For receivePort or aggregate, enter the service level for conforming packets as high, best, or low.

: For none, enter the service level for conforming packets as high, best, low, or drop.
If you enter drop, the system drops all traffic on all ports for the classifier that is associated with the control. Ping packets are ICMP, not UDP/TCP, so they are not dropped.

Default

: The default is best (best effort).

5 . Specify (yes or no) whether the conforming packets are loss eligible. The default is no.

6 . If you have selected receivePort or aggregate for the rate limit type, you are prompted for the following information:

a . Enter the service level for excess packets (high, best, low, or drop). The default is best.

b . Specify whether excess packets are loss eligible (yes or no).The default is yes.

c . Specify how the rate limit is expressed (percentage of port bandwidth or KBytes/sec. KBytes/sec is the default.

d . If you specified KBytes/sec for the rate limit, enter the value for the rate limit in KBytes/sec (0 through 65434).

If you specify that you want a percentage for the rate limit, specify the percentage in the range of from 0 through 100 percent. These numbers are rounded to the nearest 16 KBytes. A value of 0 makes all packets excess packets.

e . Enter the burst size in KBytes (16 through 8192, with the default value depending on your specified rate limit). The burst size is the maximum amount of data that you can transmit at the line rate before the transmission is policed.

f . Specify the receive ports for which you want to enable the rate limit (specific bridge ports or all bridge ports).

If you apply the rate to only one or a subset of the bridge ports, you are prompted to specify whether you want to define another rate limit for another set of bridge ports. If you specify yes, you are prompted to enter another rate limit and burst size for another set of ports. This sequence of prompting continues until you specify n, meaning that you do not want to define another rate limit for another set of ports.

If the receive port is the anchor port for a trunk, the rate limit applies to each port that is associated with the trunk. For example, a rate limit of 1000 KBytes on a three-port trunk means that each port in the trunk has the 1000-KByte limit.

7 . Select an IEEE 802.1p tag value in the range of from 0 to 7 or none (the default) to apply to forwarded frames.

8 . Enter the classifiers that are subject to this control.

: The system displays the available classifiers in parentheses. If you select aggregate as the rate limit type, only flow classifiers appear in parentheses.

QoS Control Define Example (9000 Layer 3)

This example shows a control for a flow classifier. Because the control has a rate limit of none, the system does not prompt for information associated with the other rate limit types.

: CB9000@slot2.1 [12-E/FEN-TX-L3] (qos/classifier): define
: Enter control number {6-50|?} [6]: 6
: Enter control name {?}: IPFilter1
: Enter rate limit type (none,receivePort,aggregate) [none]:
: Enter service for conforming packets (high,best,low,drop) [best]: drop
: Select classifiers which are subject to this control.
: Enter classifiers (20,23,26,401-407,420,430,440,450,460,470,480,490|all|?)26
qos control modify

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Modifies the characteristics of a previously defined control (including the controls 1 through 4, which the system provides by default).

Valid Minimum Abbreviation

: q co m

Important Considerations

The software prompts you according to the rate limit type that you select.
If the existing control has a rate limit type of receivePort or aggregate with multiple rate limits, you can now change one rate limit without affecting the other defined rate limits.

Options

Prompt	Description	Possible Values	[Default]
Control number	Number of the control that you want to modify. Existing control numbers appear in braces.	5 - 50	-
Control name	Name assigned to the control that you want to modify	Unique name with up to 32 characters	Current name for specified control
Rate limit type	Type of rate limit: none (no rate limit) receivePort (a rate limit on the specified ports) aggregate (the bandwidth for all ports specified for the associated classifier)	none receivePort aggregate	Current rate limit type
Service level	Service level for the conforming packets. Drop causes the system to drop all traffic on all ports associated with the classifier/control.	For receivePort or aggregate: high, best (best effort), or low For a rate limit of none: high, best, low, or drop	Current service level
Loss eligible	Whether conforming packets are loss eligible. A loss-eligible packet can be dropped if the transmit queue for which it is destined exceeds its threshold.	y (yes) n (no)	Current value
Excess service	For receivePort or aggregate rate limit types, service level for excess packet	high best low drop	Current value
Excess loss eligible	For receivePort or aggregate rate limit types, whether excess packets are loss eligible	y (yes) n (no)	Current value
Modify rate limits?	For receivePort or aggregate rate limit types, whether you want to modify the existing rate limits	y (yes) n (no)	no (factory default)
How rate limit is expressed	For receivePort or aggregate rate limit types, format of the rate limit, in Kbytes/sec or a percentage	KBytes/sec percentage	KBytes/sec
Rate limit value	For receivePort or aggregate rate limit types, whether you want the rate limit in Kbytes/sec or a percentage 0 makes all packets excess packets.	0 - 65434 KBytes 0 - 100 percent	-
Burst size	For receivePort or aggregate rate limit types, maximum amount of data that you can transmit at the line rate before the transmission is policed, in Kbytes	16 - 8192 KBytes	Determined by your specified rate limit
Bridge ports	For receivePort or aggregate rate limit types, the receive ports for which you want to enable the rate limit	Any subset of selectable ports all ? (for a list of selectable ports	Current bridge ports
802.1p tag	IEEE 802.1p priority tag value that you want to apply to forwarded frames (for flow or nonflow classifiers)	0 - 7	Current value
Classifiers controlled	Classifiers that are affected by this control. See "qos control summary" for a list of defined classifiers associated with controls.	Selectable classifiers (that is, those not already associated with a control)	Current classifier or classifiers for the control

Procedure

1 . Enter the control number. The existing controls are displayed in braces { }.

2 . Enter the control name.

: The name associated with the specified control number appears in brackets [ ].

3 . Enter the rate limit type (for example, none, receivePort, or aggregate.

: The available values depend on how the control was defined; the current limit appears in brackets.

4 . For receivePort or aggregate, enter the service level for conforming packets as high, best, or low.

: For none, enter the service level for conforming packets as high, best, low, or drop. If you enter drop, the system drops all traffic on all ports for the classifier that is associated with the control. The current value appears in brackets.

5 . Specify whether the conforming packets are loss eligible (yes or no).

6 . If you have selected receivePort or aggregate for the rate limit type, you are prompted for the following information:

a . Enter the service level for excess packets (high, best, low, or drop).

b . Specify whether excess packets are loss eligible (yes or no). Your current value is the default.

c . Specify whether you want to modify the existing rate limits (yes or no).

If you enter no, the system maintains the existing values for all associated rate limits. If you enter yes, specify how the first rate limit should be expressed (percentage of port bandwidth or KBytes/sec). KBytes/sec is the default. If the control has multiple per-port rate limits, you can change one rate limit without affecting the others.

d . If you specified KBytes/sec for the first (or only) rate limit, enter the value for the rate limit in KBytes/sec (0 through 65434).

If you specified percentage for the rate limit, specify the percentage in the range of from 0 through 100 percent.

e . Enter the burst size in KBytes (in the range of from 16 through 8192. The default value depends on your specified rate limit.

f . Specify the bridge ports for which you want to enable the new rate limit (for example, 1-13, or all).

If you modify the rate limit and apply it to only one or a subset of the bridge ports, you are prompted to specify whether you want to modify or define another rate limit for another set of bridge ports. If you specify yes, you are prompted to enter another rate limit and burst size. This sequence of prompting continues until you specify n, meaning that you do not want to modify or define another rate limit for another set of ports. The rate limit applies only to those ports that you explicitly specified; any ports that you did not specify are not associated with your rate limit.

7 . Select an IEEE 802.1p tag value in the range of from 0 through 7 or the value none to apply to forwarded frames.

8 . Enter the classifiers that are subject to this control. The system displays the associated classifiers in brackets. (If you select aggregate as the rate limit type, the system displays only flow classifiers.)

QoS Control Modify Example (3500)

This example shows modifications to a predefined control (4) for a predefined classifier (405).

qos control remove

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Removes a previously defined control.

Valid Minimum Abbreviation

: q co r

Important Considerations

Enter the number associated with the control that you want to remove. You can specify ? to list the selectable controls.
When you remove a control, the associated classifiers are no longer controlled and no longer have a set rate limit, service level, or 802.1p tag.

Options

Prompt

Description

Possible Values

[Default]

Control number

Number for the control that you want to remove

Any selectable control number
? (for a list of the selectable controls, which depends on the configured controls)

-

Prompt	Description	Possible Values	[Default]
Control number	Number for the control that you want to remove	Any selectable control number ? (for a list of the selectable controls, which depends on the configured controls)	-

QoS Control Remove Example (9000 Layer 3)

: CB9000@slot2.1 [12-E/FEN-TX-L3] (qos/control): remove
: Enter control number {2-5|?}: 4
qos rsvp summary

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays summary Resource Reservation Protocol (RSVP) information when RSVP is enabled.

Valid Minimum Abbreviation

: q r s

Fields in the QoS RSVP Summary Display

Field

Description

Excess loss eligible

Whether excess packets are loss eligible

Excess service

Service level for excess/policed traffic (best or low)

Per resv bandwidth

Largest reservation that RSVP attempts to install

Policing option

When to drop excess packets. Edge policing causes excess packets to be dropped only at the edge (that is, when the traffic has not yet passed through any network device that has already performed policing for that flow). Options are edge, always, or never.

Total resv bandwidth

Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.

Field	Description
Excess loss eligible	Whether excess packets are loss eligible
Excess service	Service level for excess/policed traffic (`best` or `low)`
Per resv bandwidth	Largest reservation that RSVP attempts to install
Policing option	When to drop excess packets. Edge policing causes excess packets to be dropped only at the edge (that is, when the traffic has not yet passed through any network device that has already performed policing for that flow). Options are `edge`, `always`, or `never`.
Total resv bandwidth	Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.

qos rsvp detail

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays detailed RSVP information when RSVP is enabled.

Valid Minimum Abbreviation

: q r de

Important Consideration

If no flows are installed on the system or Layer 3 module, the command displays only the summary information.

Options

Prompt

Description

Possible Values

[Default]

Level of RSVP information (when flows are installed)

If RSVP flows are available to report, the amount of RSVP information you want (all, session only, or IP address only)

all
session
IP

-

Prompt	Description	Possible Values	[Default]
Level of RSVP information (when flows are installed)	If RSVP flows are available to report, the amount of RSVP information you want (all, session only, or IP address only)	all session IP	-

Fields in the QoS RSVP Detail Display

Field

Description

Excess loss eligible

Whether excess packets are loss eligible

Excess service

Service level for excess/policed traffic (best or low)

Per resv bandwidth

Largest reservation that RSVP attempts to install

Policing option

When to drop excess packets. Edge policing causes excess packets to be dropped only at the edge (that is, when the traffic has not yet passed through any network device that has already performed policing for that flow).

Session

Session numbers, destination IP addresses and ports, protocols, number of senders, receivers, and RSVP reservations

Session - receiver and session reservation

Port numbers, an RSVP style (ST) of fixed filter (FF), shared explicit (SE), or wildcard filter (WF), next hop addresses, LIH values, TTD values, bandwidth values, burst values, and filters

Session - sender

Port numbers, source IP addresses, previous hop addresses, Logical Interface Handle (LIH) values, Time To Die (TTD) values, bandwidth values, burst size values, and output ports

Session - installed flows

Actual flow that was installed on the system (shown in the last portion of the output)

Total resv bandwidth

Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.

Field	Description
Excess loss eligible	Whether excess packets are loss eligible
Excess service	Service level for excess/policed traffic (`best` or `low`)
Per resv bandwidth	Largest reservation that RSVP attempts to install
Policing option	When to drop excess packets. Edge policing causes excess packets to be dropped only at the edge (that is, when the traffic has not yet passed through any network device that has already performed policing for that flow).
Session	Session numbers, destination IP addresses and ports, protocols, number of senders, receivers, and RSVP reservations
Session - receiver and session reservation	Port numbers, an RSVP style (ST) of fixed filter (FF), shared explicit (SE), or wildcard filter (WF), next hop addresses, LIH values, TTD values, bandwidth values, burst values, and filters
Session - sender	Port numbers, source IP addresses, previous hop addresses, Logical Interface Handle (LIH) values, Time To Die (TTD) values, bandwidth values, burst size values, and output ports
Session - installed flows	Actual flow that was installed on the system (shown in the last portion of the output)
Total resv bandwidth	Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.

qos rsvp enable

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Enables RSVP on the system and specify values for the RSVP settings.

Valid Minimum Abbreviation

: q r e

Important Considerations

By default, RSVP is disabled.
In general, when you enable RSVP, use the default settings.

Options

Prompt

Description

Possible Values

[Default]

Maximum total reservable bandwidth

Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.

0 - 200

50 (factory default)

Maximum per- reservation bandwidth

Largest reservation that RSVP attempts to install

0 - 100

50 (factory default)

Policing option

When to drop excess packets. Edge policing drops excess packets only at the edge (that is, when traffic has not yet passed through any network device that has already performed policing for that flow).

With edge, the system polices the flow when RSVP requests it.
With always, the system polices the flow regardless of whether RSVP requests it.
With never, the system never polices the flow even if RSVP requests it.

edge
always
never

edge (factory default)

Service level for excess /policed traffic

Service level for excess/policed traffic. Low is recommended.

best
low

low (factory default)

Excess Loss Eligible

Whether excess packets are loss eligible

yes
no

no (factory default)

Prompt	Description	Possible Values	[Default]
Maximum total reservable bandwidth	Admission control policy. RSVP begins to refuse reservations when the requested bandwidth on an output link exceeds the total reservable bandwidth.	0 - 200	50 (factory default)
Maximum per- reservation bandwidth	Largest reservation that RSVP attempts to install	0 - 100	50 (factory default)
Policing option	When to drop excess packets. Edge policing drops excess packets only at the edge (that is, when traffic has not yet passed through any network device that has already performed policing for that flow). With edge, the system polices the flow when RSVP requests it. With always, the system polices the flow regardless of whether RSVP requests it. With never, the system never polices the flow even if RSVP requests it.	edge always never	edge (factory default)
Service level for excess /policed traffic	Service level for excess/policed traffic. Low is recommended.	best low	low (factory default)
Excess Loss Eligible	Whether excess packets are loss eligible	yes no	no (factory default)

Procedure

1 . Enter the maximum total reservable bandwidth, using a percentage of the output link (a value of from 0 through 200, with 50 as the default).

: You are allowing RSVP to reserve this amount of bandwidth in the system. You can oversubscribe (over 100) and specify a value of up to 200.

2 . Enter the maximum per-reservation bandwidth, using a percentage of the output link (a value of from 0 through 100, with 50 as the default).

3 . Enter the policing option (edge, always, or never, with edge as the default). See the previous table for definitions of the policing options.

4 . Enter the service level for excess/policed traffic (best or low, with low as the default).

: This setting applies to the excess traffic with the reserved bandwidth (that is, which queue it should be placed in).

5 . Specify whether excess packets are loss eligible (yes or no, with no as the default).

qos rsvp disable

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Disables RSVP on the system.

Valid Minimum Abbreviation

: q r di

Important Considerations

By default, RSVP is disabled.
This command does not verify that RSVP has been disabled.
qos bandwidth display

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays the link bandwidth as the ratio of bandwidth allocated to high priority traffic versus best effort traffic. Link bandwidth is the total link bandwidth less the bandwidth used by RSVP and network control traffic.

Valid Minimum Abbreviation

: q b d

Important Consideration

By default, the percentage of bandwidth allocated to high-priority traffic is 75 percent.
qos bandwidth modify

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Specifies the weighting of the high priority and best effort transmit queues. Bandwidth for the control queue is set with RSVP. Low priority packets do not have bandwidth explicitly allocated.

Valid Minimum Abbreviation

: q b m

Important Considerations

When you enter the command, the system prompts you to enter the percentage of bandwidth to be used for high-priority traffic on the output link.
The value 75 specifies that three high-priority packets are transmitted for each best effort packet.
The value 50 sets equal priority for high priority and best effort packets.
The value 100 is strict prioritization; it allows best effort packets to be sent only when no high priority packets need to be sent.

Options

Prompt

Description

Possible Values

[Default]

Percentage of bandwidth

Percentage of bandwidth that you want to be used for high-priority traffic on the output link

0 - 100

75

Prompt	Description	Possible Values	[Default]
Percentage of bandwidth	Percentage of bandwidth that you want to be used for high-priority traffic on the output link	0 - 100	75

qos excessTagging display

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays status information about whether excess packets are tagged with a special IEEE 802.1p tag value.

Valid Minimum Abbreviation

: q e disp
qos excessTagging enable

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Tags or retags excess packets with a special 802.1p tag value. This special value refers to any packets marked as excess that you want to tag.

Valid Minimum Abbreviation

: q e e

Important Considerations

Excess tagging is disabled by default.
When you enter this command, you are prompted to enter an IEEE 802.1p tag value for excess packets in the range of 0 through 7, with 0 as the default.
If you specify 1, excess packets become background traffic.

Options

Prompt

Description

Possible Values

[Default]

IEEE 802.1p tag value

Tag value used to tag or retag excess packets

0 - 7

0

Prompt	Description	Possible Values	[Default]
IEEE 802.1p tag value	Tag value used to tag or retag excess packets	0 - 7	0

qos excessTagging disable

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Disables the tagging of excess packets with a special 802.1p tag value.

Valid Minimum Abbreviation

: q e disa

Important Consideration

Excess tagging is disabled by default.
qos statistics interval

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Sets a sampling interval for gathering QoS statistics.

Valid Minimum Abbreviation

: q s i

Important Considerations

The default interval is 5 seconds.
When you enter this command, the system prompts you to enter the appropriate interval. The existing value appears in brackets.
A nonzero value shows the byte or packet-count-per-interval period. A zero value shows byte or packet counters.

Options

Prompt

Description

Possible Values

[Default]

Interval

Interval, in seconds, at which you want to gather QoS statistics

0 - 60

5 (factory default), or current value

Prompt	Description	Possible Values	[Default]
Interval	Interval, in seconds, at which you want to gather QoS statistics	0 - 60	5 (factory default), or current value

qos statistics receive

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays QoS receive statistics.

Valid Minimum Abbreviation

: q s r

Important Considerations

The system displays the statistics at the interval specified. The default interval is 5 seconds.
The receive statistics shows the effect of the traffic control services that you configured.

Options

Prompt

Description

Possible Values

[Default]

Bridge ports

Port numbers for which you want to display receive statistics.
On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.

One or more port numbers
all
? (for a list of selectable ports)

-

Prompt	Description	Possible Values	[Default]
Bridge ports	Port numbers for which you want to display receive statistics. On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.	One or more port numbers all ? (for a list of selectable ports)	-

Fields in the QoS Receive Statistics Display

Field

Description

droppedPackets

Number of packets dropped when received

droppedPacketsPeak

Highest number of packets dropped on receipt up to this point

flowExcess

Number of flow classifier bytes that are excess

flowExcessPeak

Highest number of flow excess bytes received up to this point

flowReserved

Number of conforming flow classifier bytes that have been received

flowReservedPeak

Highest number of flow classifier bytes that have been received up to this point

nonFlowExcess

Number of nonflow classifier bytes that have been received that are excess

nonFlowExcessPeak

Highest number of nonflow excess bytes that have been received up to this point

nonFlowReserved

Number of conforming non-flow classifier bytes that have been received

nonFlowResvPeak

Peak count: The highest number of conforming nonflow classifier bytes received up to this point

port

If you display statistics for multiple ports, the port number associated with the statistics

Field	Description
droppedPackets	Number of packets dropped when received
droppedPacketsPeak	Highest number of packets dropped on receipt up to this point
flowExcess	Number of flow classifier bytes that are excess
flowExcessPeak	Highest number of flow excess bytes received up to this point
flowReserved	Number of conforming flow classifier bytes that have been received
flowReservedPeak	Highest number of flow classifier bytes that have been received up to this point
nonFlowExcess	Number of nonflow classifier bytes that have been received that are excess
nonFlowExcessPeak	Highest number of nonflow excess bytes that have been received up to this point
nonFlowReserved	Number of conforming non-flow classifier bytes that have been received
nonFlowResvPeak	Peak count: The highest number of conforming nonflow classifier bytes received up to this point
port	If you display statistics for multiple ports, the port number associated with the statistics

qos statistics transmit

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Displays QoS transmit statistics.

Valid Minimum Abbreviation

: q s t

Important Considerations

The transmit statistics help you track bandwidth utilization and packet loss by physical port and queue (reserved, high, best, and low).
The RSVP and network control packets go out on the reserved queue.
When you mark any packet (conforming or excess) as loss eligible, the packet is dropped if the transmit queue for which it is destined is over its threshold. A packet that is marked loss eligible falls into one of the two highLoss statistic categories:
- If the transmit queue is not over its threshold, the packet is sent and counted as a highLossSent packet.
- If the transmit queue is over its threshold, it is dropped and counted as a highLossDropped packet.
If you do not mark a packet as loss eligible, it falls into one of the three lowLoss statistics.
Loss-eligible packets are conforming packets that are discarded instead of queued when transmit queues back up beyond a threshold. You can specify whether conforming packets (as well as nonconforming excess packets) are loss eligible when you define a control. Marking packets loss eligible is useful to enable intelligent discard of traffic in a congestion situation. When the system is congested, you can decide which traffic can be discarded and mark that traffic as loss eligible.

Options

Prompt

Description

Possible Values

[Default]

Bridge ports

Port numbers of ports for which you want to display transmit statistics.
On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.

One or more port numbers
all
? (for a list of selectable ports)

-

Queues

Transmit queues (types of service) for which you want to display statistics

reserved
high
best
low
all
? (for a list of selectable values)

-

Prompt	Description	Possible Values	[Default]
Bridge ports	Port numbers of ports for which you want to display transmit statistics. On the CoreBuilder 9000, the list of ports includes the front-panel ports and any enabled backplane ports.	One or more port numbers all ? (for a list of selectable ports)	-
Queues	Transmit queues (types of service) for which you want to display statistics	reserved high best low all ? (for a list of selectable values)	-

Fields in the QoS Transmit Statistics Display

Field	Description
highLossDropped	Number of loss-eligible packets that were discarded and were over the threshold
highLossDroppedPeak	Highest count of loss-eligible packets that were discarded so far and were over the threshold
highLossSent	Number of loss-eligible packets that were sent and were under the threshold (at low latency)
highlossSentPeak	Highest count of loss-eligible packets that were sent so far and were under the threshold
lowLossDelayed	Number of non-loss-eligible packets that were sent and over the threshold (that is, the transmit queues were backing up but not overflowing)
lowLossDelayedPeak	Highest count of non-loss-eligible packets that were sent so far and were over the threshold
lowLossDropped	Number of packets that were discarded because they exceeded the length of the transmit queue
lowLossDroppedPeak	Highest count of packets that were discarded so far because they exceeded the length of the transmit queue
lowLossSent	Number of non-loss-eligible packets that were sent and were under the threshold (at low latency)
lowLossSentPeak	Highest count of non-loss-eligible packets that were sent so far and were under the threshold
port	Port number that is associated with the statistics
queue	Queue that is associated with the statistics

Administering Quality of Service (QoS) and RSVP

Fields in the QoS Classifier Summary Display

Options

Important Considerations

Options

Flow classifiers classify traffic only at the network layer and therefore affect only traffic that is being routed from one subnetwork to another.

QoS Classifier Define Example (Flow Classifier)

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Considerations

Options

Important Considerations

Options

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Fields in the QoS Control Summary Display

Options

Important Considerations

Options

QoS Control Define Example (9000 Layer 3)

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Considerations

Options

Important Considerations

Options

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Fields in the QoS RSVP Summary Display

Important Consideration

Options

Important Considerations

Options

Important Considerations

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Consideration

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Considerations

Options

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Considerations

Options

Important Consideration

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Important Considerations

Options

Important Considerations

Options

Important Considerations

Options