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This chapter provides an overview on configuring IPX routing for the OfficeConnect Remote 840.
The OfficeConnect Remote 840 can be configured as a router to forward packets between the local LAN interface and one or more remote sites. A forwarding table is maintained that specifies which interface to route an IPX packet based on the destination IPX network number.
Entries into the forwarding table are either static or dynamic. Static entries are based on the LAN's network number, the remote site WAN interface number, and user configured static routes. Dynamic entries are added when RIP is enabled and routes are learned from neighboring routers.
To configure IPX routing, IPX must be defined on both the LAN interface and one or more remote sites. On the LAN, an IPX network must exist with a specified IPX network number. On the remote sites, IPX forwarding needs to be enabled, and the WAN interface address need to be configured. The WAN interface can be unnumbered (set to 0), numbered, or dynamically learned (if PPP is used).
To configure IPX over the LAN, assign an IPX network to the LAN port by providing a name and a network address. After adding a network you can modify advanced parameters.
In order for the OfficeConnect Remote 840 to route traffic, you also have to set up a corresponding network over the WAN port. (See "Configuring IPX for Remote Sites Connection".)
Use the Configuration > Local Site (LAN) > IPX screen to define or modify all IPX networks over the LAN. Note that each IPX network defined over the LAN must support a different frame type.
To add a Local IPX network:
1 . From the OfficeConnect Remote 840 home page, select Configuration > Local Site (LAN) > IPX. Click Add. This brings up a screen with the following fields:
2 . Enter a name for the network, the IPX address of the network, and the frame type of the network running on the LAN. Check the Enable IPX box.
3 . Click Add to add this defined IPX network.
For information of configuring the IPX RIP and SAP, see "Configuring IPX RIP and SAP".
To modify information pertaining to an existing IPX network or to delete that information from your configuration, follow these steps:
1 . Proceed to the IPX screen, following steps from the previous section.
2 . Select an IPX network you wish to modify or delete.
3 . Click Modify/Delete.This brings up the IP Modify/Delete screen containing the following fields:
4 . You may enable or disable the selected IPX network by clicking Modify or Delete.
5 . Click Modify after you have entered your fields.
If you need to return to the original parameters for this screen, click the Reset button before you click Modify.
To set up a protocol over the WAN, a remote site profile must be created and edited for each remote location you want to connect to. With this profile, you specify virtual circuit (VPI, VCI) information, protocols, and addresses that determine the method of connection and communication to that remote site.
The steps you take to assign a network over the WAN are quite different from those to assign a network over the LAN. First you add a remote site profile, then you modify the profile to include the WAN network information, such as IPX addresses and IPX routing.
If you need to connect to multiple remote sites (i.e., two remote offices) you can set up a remote site profile for each remote location.
For any routing to take place across the OfficeConnect Remote 840, you also have to set up a corresponding network over the LAN. See "Configuring IPX for the LAN" for details.
The IPX configuration for the remote site begins at the IPX Modify screen.
These instructions assume you have already added a remote site profile. If you need to add a remote site profile, see "Remote Site Management" in Chapter 3 for details on adding a remote site profile.
1 . Access this screen by going to the OfficeConnect Remote 840 "home page." Select Configuration > Remote Sites (WAN).
2 . Select a profile and click Modify. This will access the Remote Sites General Modify screen.
3 . Continue clicking Next to advance through the ATM Modify, IP Modify, and IP Advanced Modify screens.
4 . Click Next to proceed to the IPX Modify screen.
5 . Check the correct box in the IPX WAN Network Address box.
OR
6 . To automatically learn IPX RIPs and SAPs, set the IPX Routing option to Both.
7 . Check the Enable IPX checkbox.
8 . Remember to save the configuration by clicking Save on the sidebar.
A static route is a configured route that will remain in the routing table until deleted. Static routes differ from dynamic routes in that dynamic routes are learned from real-time via RIP or when new connections are established.
A framed route is much like a static route in that you manually configure the route. The difference is that a static route is defined for the LAN while a framed route is associated with a remote site. Also, while a static route is active when the LAN is connected, a framed route is active only when the connection to the associated remote site is active.
Use static and framed routes only for networks not learned using RIP.
To add, modify, or delete a static route to the LAN, follow these steps:
1 . From the OfficeConnect Remote 840 home page, select Configuration > Global > IPX > IPX Static Routes.
2 . Click Add. This accesses a screen containing the following fields:
3 . Define the Route by entering the following fields:
4 . Click Submit. To clear the fields, click Reset.
5 . To delete a route from your configuration, select the route and click Delete.
To add, modify, or delete a framed route to a Remote Site, follow these steps:
1 . Select Configuration > Remote Sites (WAN).
2 . Select the remote site to modify, and click Modify.
3 . Continue clicking Next to advance through the ATM Modify, IP Modify, IP Advanced Modify screens to get to the IPX Modify screen.
4 . Click Framed Routes.
5 . Click Add to define the following parameters:
6 . After you have entered the fields, click Submit.
7 . Click Modify to change the fields, the Details button to view the fields, and the Delete button to erase the parameters you have set.
The services table contains IPX server names, the services they provide, their network and node addresses, and their relative distances. Examples of services include file servers and printers.
A static service entry will remain in the service table until deleted. Static services differ from dynamic services in that dynamic services are learned real-time via SAP packet exchange between routers.
A static service entry is a manually configured service accessible over the LAN. A framed service is a manually configured service accessible from a remote site. A framed service is active only when the connection to the associated remote site is active.
Use static and framed services only for servers not learned using SAP.
To add a static IPX Service to a LAN:
1 . Select Configuration > Global > IPX > IPX Services.
2 . Click Add to define the following parameters of a static service:
3 . After you have entered the fields, click Add.
To add, modify, or delete a framed service for a remote site:
1 . Select Configuration > Remote Sites (WAN).
2 . Select the remote site to modify, and click Modify.
3 . Continue clicking Next to advance through the ATM Modify, IP Modify, IP Advanced Modify screens to get to the IPX Modify screen.
4 .
Click Framed Services. 
5 . Click Add to define the following parameters:
6 . After you have entered the fields, click Submit.
RIP is utilized as a means of communicating routing information between routers. This is done to keep the routers updated on information. Service Advertising Protocol (SAP) is a protocol used by IPX servers and routers to exchange information about the location of servers.
IPX RIP and SAP parameters can be configured in the advanced IPX options for the local site (LAN).
1 . Select Configuration > Local Site > IPX.
2 . Select the Local Site definition from the list and click Advanced to access the IPX Advanced screen containing the following parameters:
3 . Enter the value for the LAN RIP and LAN SAP Age Multipliers. These are values by which to multiply the corresponding update interval to obtain the length of time (seconds) before aging out entries in either the RIP or SAP database.
4 . Enter the Update Intervals for the LAN RIP and LAN SAP. These are the intervals (seconds) for how often the LAN should send out periodic RIP or SAP updates.
5 . Click Submit when the values on the screen have been correctly entered.
IPX RIP and SAP parameters can be configured on the remote site IPX Modify screen.
Access this screen by going to the OfficeConnect Remote 840 home page.
1 . Select Configuration > Remote Sites (WAN), and click Modify. This will access the Remote Sites General Modify Screen.
2 . Continue clicking Next to advance through the ATM Modify, IP Modify, and IP Advanced Modify screens.
3 . Click Next to proceed to the IPX Modify screen.
4 . Using the IPX Routing box, select the mode for RIP and SAP operation:
Media Access Control (MAC)-Encapsulated Routing combines routing and bridging so that routing features (i.e., Address Translation, DNS Proxy, DHCP Server, etc.) are available in a bridged environment.
There are no specific changes required in the IPX routing configuration to support MAC-Encapsulated Routing. See "Configuring Bridging" in Chapter 5 for instructions on how to enable MAC-Encapsulated Routing.
Go to the Monitor > Routes and Services > IPX Routes screen.
Go to the Monitor > Routes and Services > IPX Services screen.
Go to the Monitor > Networks > IPX > IPX Counters screen (indicates the number of data packets received and forwarded or discarded).
Go to the Monitor > Networks > Network Status screen. When a remote site has been successfully established and IPX is configured, an entry will be displayed with the Remote Site Name followed by an "-ipx" suffix.
If the IPX routing has been setup correctly and if the remote network is functioning, you should be able to access remote Novell servers or perform other IPX tasks.
If you have problems, you should check the Monitor > Routes and Services > IPX Routes and IPX Services screens to see if the expected routes and services have been learned via RIP and SAP.
If remote routes and services have not been learned, check the Configuration > Remote Sites (WAN) > IPX screens and ensure that IPX Routing is set to Listen or Listen and Broadcast.
For more information on these monitoring screens, see "Monitoring the OfficeConnect Remote 840" in Chapter 11.