IEWEB, Lab 16, bridging Topology

From: Roberto Fernandez (rofernandez@us.telefonica.com)
Date: Sat Sep 23 2006 - 20:22:40 ART


Friends,

I have a question regarding the topology on this scenario; I apology for
asking a scenario specific question, I'll try to describe it...

Question is more on less the following:

There are four routers R1, R2, R6, BB1

1- R1 has its Fa0/0 connected to VLAN 16

2- R2 has its Fa0/0 connected to VLAN 22

3- R1 and R2 are connected to each other by means of a bridged
connection over frame relay

4- a bridge-group was created on each of the routers and both the Se0/0
and the Fa0/0 on each belong to the bridge group.

5- Then there is another two routers R6, connected to VLAN 16 and BB2
connected to VLAN 22

6 - All four routers share the same IP subnet (R1-BVI, R2-BVI, R6
E0/0.16 and BB2)

If you draw based on the description you will find that the bridged
connection over frame relay from R1 to R2 "short-circuits" VLAN 16 and
VLAN 22

My issue is that as soon as I bring the Frame Relay bridged connection
up, the routers on the same VLAN stop to communicate one to each other.
R1 is not longer capable to ping R6 and R2 is not longer capable to ping
BB2.

I've checked spanning tree and all devices are forwarding for the VLANs
16 and 22 and no problems are apparent.



This archive was generated by hypermail 2.1.4 : Sun Oct 01 2006 - 16:55:41 ART