SETDefault !<port> -SR LargestFrameSize = <number> (0-7)

SHow [!<port> | !*] -SR LargestFrameSize

SHowDefault [!<port> | !*] -SR LargestFrameSize

3 (4,399 octets)

Description

The LargestFrameSize parameter specifies the maximum size frame that can be sent and received on a port. The source route bridge negotiates the largest frame size of all transit routes down to this size. This parameter should be used to regulate the amount of data transmitted by end systems to prevent timeouts due to slow network links. If the connected network contains low-speed WAN links, a lower largest frame size value should be assigned. Table 126 shows how the base values specified in IEEE 802.1D are supported.

Table 126 Frame Size Values

LargestFrame Size Parameter Setting	Data Unit Length (Frame Size)
0	516 octets
1	1,470 octets
2	2,052 octets
3	4,399 octets
41	8,130 octets
5*	11,407 octets
6*	17,749 octets
7*	41,600 octets

1 These values are not supported.

Extended values listed in the IEEE specification are not currently supported.