BC-168 | Cisco Systems BC-145 guide

Configuring Token Ring Inter-Switch Link

TRISL Configuration Examples

SR/TLB Between a TRISL VLAN and an Ethernet ISL VLAN Example

Figure 67 illustrates SR/TLB between a TRISL VLAN and an Ethernet ISL VLAN.

Figure 67 SR/TLB Between a TRISL VLAN and an Ethernet ISL VLAN

End station

Catalyst

5000 switch

Ethernet ISL VLAN 12	5500	Ethernet module
		in slot 2, port 1

Router A Fast Ethernet 4/0.2
100	TrBRF 999/	Token Ring
	TrBRF 999/	switch module
	Bridge 14	switch module
Fast Ethernet 4/0.1	Bridge 14	in slot 5
TrCRF 20		in slot 5
TrCRF 20

Token

Ring

101

TrCRF

VLAN 21

Slot 5

Port 1

51893

End station

The following is the configuration for the router:

source-bridge ring-group 100 source-bridge transparent 100 101 6 1

interface fastethernet4/0.1

encapsulation tr-isl trbrf-vlan 999 bridge-num 14 source-bridge trcrf-vlan 20 ring-group 100 source-bridge spanning

interface fastethernet4/0.2 encapsulation isl 12 bridge-group 1

bridge 1 protocol ieee

The following is the configuration for the Catalyst 5000 switch with an Ethernet module in slot 2 and a Token Ring switch module in slot 5. In this configuration, the Token Ring port attached to ring 101 is assigned to TrCRF VLAN 21, and the router’s virtual ring is assigned to TrCRF VLAN 20.

#vtp

set vtp domain trisl set vtp mode server set vtp v2 enable #drip

set tokenring reduction enable set tokenring distrib-crf disable #vlans

set vlan 999 type trbrf bridge 0xe stp ibm

set vlan 20 type trcrf parent 999 ring 0x64 mode srb set vlan 21 type trcrf parent 999 ring 0x65 mode srb #add token port to trcrf 21

set vlan 21 5/1 #add ethernet

set vlan 12 type ethernet set vlan 12 2/1

set trunk 1/2 on

	Cisco IOS Bridging and IBM Networking Configuration Guide
BC-168	78-11737-02