Configuring Token Ring Inter-Switch Link
TRISL Configuration Examples
BC-168
Cisco IOS Bridging and IBM Networking Configuration Guide
78-11737-02
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
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
5500
TrCRF
VLAN 21
Slot 5
Port 1
Ethernet ISL VLAN 12
TrBRF 999/
Bridge 14
Token Ring
switch module
in slot 5
Ethernet module
in slot 2, port 1
Router A
Fast Ethernet 4/0.2
Fast Ethernet 4/0.1
51893
Catalyst
5000 switch
Token
Ring
101
rCRF 20
100
