Information Technology Reference
In-Depth Information
Table10-6
Translational Bridging: Client Cannot Connect to Server (continued)
Possible Problem
Solution
Ethernet-to-Toke
n Ring address
mapping that is
misconfigured
(continued)
Example:
The following is sample output from the
show span
command:
RouterA>
show span
Bridge Group 1 is executing the IBM compatible
spanning tree protocol
Bridge Identifier has priority 32768, address
0000.0c0c.f68b
Configured hello time 2, max age 6, forward delay
4
Current root has priority 32768, address
0000.0c0c.f573
Root port is 001A (TokenRing0/0), cost of root
path is 16
Topology change flag not set, detected flag not
set
Times: hold 1, topology change 30, notification
30
hello 2, max age 6, forward delay 4, aging
300
Timers: hello 0, topology change 0, notification 0
Port 001A (TokenRing0/0) of bridge group 1 is
forwarding. Path cost 16
Designated root has priority 32768, address
0000.0c0c.f573
Designated bridge has priority 32768, address
0000.0c0c.f573
Designated port is 001B, path cost 0, peer 0
Timers: message age 1, forward delay 0, hold 0
Port 002A (TokenRing0/1) of bridge group 1 is
blocking. Path cost 16
Designated root has priority 32768, address
0000.0c0c.f573
Designated bridge has priority 32768, address
0000.0c0c.f573
Designated port is 002B, path cost 0, peer 0
Timers: message age 0, forward delay 0, hold 0
Port 064A (spanRSRB) of bridge group 1 is disabled.
Path cost 250
Designated root has priority 32768, address
0000.0c0c.f573
Designated bridge has priority 32768, address
0000.0c0c.f68b
Designated port is 064A, path cost 16, peer 0
Timers: message age 0, forward delay 0, hold 0
A port (spanRSRB) is created with each virtual ring group. The
port is disabled until one or more peers go into open state in the
ring group.
3.
Use the
show rif
exec command to determine whether the
target Token Ring station is visible on the internetwork.
When configured for translational bridging, the router extracts
the RIF of a packet received from the Token Ring network and
saves it in a table. The router then transmits the packet on the
Ethernet network. Later, the router reinserts the RIF when it
receives a packet destined for the originating node on the Token
Ring side.
