Transparent Bridge - mikerm19/cisco GitHub Wiki
This method puts the token ring as an "extension" of the ethernet network. The token ring side has the same IP addresses as the ethernet side (ignore the 172.20.0.x network in the diagram). I have not been able to get DHCP to work through the bridge.
Credits: CISCO Forum Post
Transparent bridge:
!
source-bridge ring-group 10
source-bridge transparent 10 11 1 1
bridge irb
!
interface FastEthernet1/0
duplex auto
speed auto
bridge-group 1
!
interface TokenRing1/0
no ip address
ring-speed 16
source-bridge 1 1 10
source-bridge spanning
!
bridge 1 protocol dec
bridge 1 bitswap-layer3-addresses
!
Token-Ring client config:
IP Address: 192.168.10.99
Netmask: 255.255.255.0
Gateway: 192.168.10.1
DNS Server: 192.168.10.2