Cisco Systems BC-145 manual BC-170

Configuring Token Ring Inter-Switch Link

TRISL Configuration Examples

set vlan 30 name VLAN0030 type trbrf mtu 4472 said 100030 state active bridge 0x2 stp ieee

set vlan 22 name VLAN0022 type trcrf mtu 4472 said 100022 state active parent 20 ring 0x1 mode srt aremaxhop 7 stemaxhop 7

set vlan 23 name VLAN0023 type trcrf mtu 4472 said 100023 state active parent 20 ring 0x32 mode srt aremaxhop 7 stemaxhop 7

set vlan 32 name VLAN0032 type trcrf mtu 4472 said 100032 state active parent 30 ring 0x2 mode srt aremaxhop 7 stemaxhop 7

set vlan 33 name VLAN0033 type trcrf mtu 4472 said 100033 state active parent 30 ring 0x32 mode srt aremaxhop 7 stemaxhop 7

set port channel 1/1-2 on

set trunk 1/1 on isl 1-1005 set trunk 1/2 on isl 1-1005

add token port to crf 22 set vlan 22 5/1

add token port to crf 32 set vlan 32 5/2

TRISL with Fast EtherChannel only runs on the Cisco 7500. The MTU size can be set to more than 1500 if all the members of the port channel interface are 2FE/ISL adaptors. If, on the other hand, any member of the port channel interface is a non 2FE/ISL adaptor, then the MTU size is not configurable and defaults to 1500 bytes. Also, only IP utilizes all four links. Spanning Tree Protocol must be disabled if transparent bridging is configured on the FEC. The port-channel interface is the routed interface. Do not enable Layer 3 addresses on the physical Fast Ethernet interfaces. Do not assign bridge groups on the physical Fast Ethernet interfaces because it creates loops. Also, you must disable Spanning Tree Protocol if transparent bridging is configured on the FEC.

	Cisco IOS Bridging and IBM Networking Configuration Guide
BC-170	78-11737-02