System information

Troubleshooting IBM 10-227
Translational Bridging: Client Cannot Connect to Server
Translational Bridging: Client Cannot Connect to Server
Symptom: Clients cannot communicate over a router configured as a translational bridge.
Note In certain situations, replacing existing translational bridges with Cisco translational bridges
can cause interoperability problems. Some translational bridge implementations map functional
addresses between media (such as local-area transport [LAT] functional address 0900.2B00.00FA
on Ethernet) to a broadcast address on the Token Ring side (such as C000.FFFF.FFFF). Cisco does
not support this functionality. Furthermore, you cannot use translational bridging with any protocol
that embeds the MAC address of a station inside the Information field of the MAC frames (examples
include IP ARP and Novell IPX).
Table 10-7 outlines the problems that might cause this symptom and describes solutions to those
problems.
Table 10-7 Translational Bridging: Client Cannot Connect to Server
Misconfigured
source-bridge
command
Step 1 For each router on which NetBIOS name caching is enabled, use the show
source-bridge command to obtain the version of the remote connection. The value
specified should be 2 or 3. If the value is 1, connections will not get through, and
you must modify your configuration.
Example:
The following is sample output from the show source-bridge command:
Router# show source-bridge
Local Interfaces: receive transmit
srn bn trn r p s n max hops cnt cnt drops
TR0 5 1 10 * * 7 39:1002 23:62923
Ring Group 10:
This peer: TCP 150.136.92.92
Maximum output TCP queue length, per peer: 100
Peers: state lv pkts_rx pkts_tx expl_gn drops TCP
TCP 150.136.92.92 - 2 0 0 0 0 0
TCP 150.136.93.93 open 2* 18 18 3 0 0
Rings:
bn: 1 rn: 5 local ma: 4000.3080.844b TokenRing0 fwd: 18
bn: 1 rn: 2 remote ma: 4000.3080.8473 TCP 150.136.93.93 fwd:
36
Explorers: ------- input ------- ------- output -------
spanning all-rings total spanning all-rings total
TR0 0 3 3 3 5 8
Router#
Step 2
If the router is running a software release prior to Cisco IOS Release 10.0, specify
either version 2 or version 3 in the source-bridge remote-peer interface
configuration command. The syntax is as follows:
source-bridge remote-peer ring-group tcp ip-address [lf size] [local-ack]
[priority] [version number]
If the router is running Cisco IOS Release 10.0 or later, the specification of a
version is ignored.
For more information, refer to the Cisco IOS Bridging and IBM Networking Configuration
Guide and Bridging and IBM Networking Command Reference.
Possible Problem Solution