Setting up the bridge-group on both routers and assign the respective interface to it.
maria bridge irb bridge 1 protocol ieee ! interface FastEthernet0/0 description Link to lan 192.168.222.0/24 no ip address bridge-group 1 end
hilde bridge irb bridge 1 protocol ieee ! interface FastEthernet0/1 description Link to lan 192.168.222.0/24 no ip address bridge-group 1 end
Last but not least, you have to setup Data Link Switching on both routers and add it to the bridge-group.
maria dlsw local-peer peer-id 172.16.17.1 dlsw remote-peer 0 tcp 172.16.17.6 dlsw bridge-group 1
hilde dlsw local-peer peer-id 172.16.17.6 dlsw remote-peer 0 tcp 172.16.17.1 dlsw bridge-group 1
You can find a nice configuration guide for DLSw+ in the Cisco Support Wiki.
To verify, if your DLSw+ connection is established, you can consult the show dlsw peers command on both routers.
With it, you get some informations e.g. session-state and -duration, received and transmitted packets and so on…
maria#sh dlsw peers Peers: state pkts_rx pkts_tx type drops ckts TCP uptime TCP 172.16.17.6 CONNECT 6690 2631 conf 0 1 0 02:51:00 Total number of connected peers: 1 Total number of connections: 1 hilde#sh dlsw peers Peers: state pkts_rx pkts_tx type drops ckts TCP uptime TCP 172.16.17.1 CONNECT 2638 6700 conf 0 1 0 02:51:08 Total number of connected peers: 1 Total number of connections: 1
There are further flavors for the show dlsw command and several debug possibilites, but i wouldn’t go more in detail now.
show dlsw ? capabilities Display DLSw capabilities information circuits Display DLSw circuit information fastcache Display DLSw fast cache for FST and Direct local-circuit Display DLSw local circuits peers Display DLSw peer information reachability Display DLSw reachability information statistics Display DLSw statistical information transparent Display MAC address mappings debug dlsw ? border-peers Debug DLSw border peer events core Debug DLSw core local-circuit Debug DLSw local circuit events peers Debug DLSw peer events reachability Debug DLSw reachability (explorer traffic) rsvp Debug DLSw rsvp transparent Debug DLSw Ethernet redundancy Master-Slave & Circuit events <cr>
An extensive troubleshooting guide for DLSw+ can be found on the Cisco website.
To get more information about the bridge, there are some few show commands available.
maria#sh bridge 1 Total of 300 station blocks, 298 free Codes: P - permanent, S - self Bridge Group 1: Address Action Interface Age RX count TX count 000c.29af.4431 forward FastEthernet0/0 0 1787 1602 000c.2928.27e3 forward DLSw Port0 0 2752 1598 hilde#sh bridge 1 Total of 300 station blocks, 298 free Codes: P - permanent, S - self Bridge Group 1: Address Action Interface Age RX count TX count 000c.29af.4431 forward DLSw Port0 0 1799 1597 000c.2928.27e3 forward FastEthernet0/1 0 2795 1598
I was looking for bridge specific debug commands, but couldn’t find some.
Due to the lack of troubleshooting alternatives, i avoid bridge-groups whenever it’s possible. But in special cases it’s the only way out.