From: Rick Burts (burts@xxxxxxxxxxxxxx)
Date: Mon Aug 27 2001 - 01:15:47 GMT-3
Paul
There are a couple things you did not mention that may be part of
your problem: is there bridge irb on each of R1, R2, R3, R4 ?
(There should be).
You do not address which port is in blocking state. (There is a
potential loop so some port should be blocking. If it is not the
correct port the ARP broadcast will not be forwarded properly.)
Rick
Rick Burts, CCSI CCIE 4615 burts@mentortech.com
Mentor Technologies 240-568-6500 ext 6652
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On Sun, 26 Aug 2001, Paul Young wrote:
> I'm was working on ECP1 Exercise 7 Transparent
> Bridging, Spanning Tree & IRB but couldn't get ping
> to work from Frame Switch to R3's BVI IP address as
> described in the lab.
>
> Irb & Transparent bridging
> (bridge 1 protocol ieee, bridge-group 1) are on all
> routers (R1, R2, R3, R4's serial plus ethernet
> interface). IP addresses configured on Eth0 of the
> Frame switch & BVI1 on R3 only. Bridge 1 route ip
> also configured on R3 (where BVI1 is). No Transparent
> bridging statements or irb is configured on the Frame
> Switch router (physical IP assigned to Ethernet
> interface only).
> Frame configuration as follows:
> R1 has serial sub-interface s0/0.123 (multi-point)
> with 3 frame map bridge DLCI# broadcast statements as
> well as bridge-group 1 statement. R2, R3, R4 each has
> a physical serial frame configuration (s0 with no
> sub-interface) and 1 frame map bridge DLCI# broadcast
> plus bridge-group 1 at each router (r2, r3, r4) going
> back to R1 (no IP addresses are assigned to serial or
> ethernet interface as mentioned, except on the Frame
> Switch router).
>
> When trying to ping R3 BVI1's interface from the frame
> switch router with debug ip & icmp enabled, it shows
> encap fail message.
>
> Anyone has any idea or suggestions of getting this to
> work is much appreciate it, thanks.
>
>
>
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