From: David H. Brown (DHBrown@xxxxxxxxxxxx)
Date: Fri Mar 31 2000 - 00:59:43 GMT-3
Chuck,
>From your description, I think you have this:
R1 -- Eth -- R2 -- FRAME -- R3 -- Eth -- R4
E0 E0 S0 S0 E0 E0
.1 .2 .12 .13 .3 .4
192.168.1.X /24
I duplicated your scenario, and also turned off IP Routing on all routers.
All are in the same bridge group and same subnet; I turned on debug IP
packet, and the ping from .2 to .4 resulted in 'encapsulation failed'. When
I added an IP address on R2-S0 (.12), the pings began to work. It appears
that there needs to be an IP address on each interface on the router for the
ping to reach any interface on that router. When I remove the .12 from
R2-S0, I can no longer ping from .4 to .2
I hope this is clear - but in summary, in order to ping from R1 to E0 on R3,
S0 of R3 must have an IP address. Now, can someone else fill in the theory
as to why this is?
David
(2nd attempt coming soon)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Charles Wolfe
Sent: Thursday, March 30, 2000 6:57 PM
To: ccielab@groupstudy.com
Subject: bridging
Ladies and Gentlemen,
My setup is as follows. R1 to R2 is connected by ethernet. R2 to R3 is
connected by frame-relay. R3 to R4 is connected by ethernet.
I have bridging activated on all interfaces and have the "frame map bridge"
command configured on the fr interfaces.
I have an ip address on R1 ethernet interface and R4 ethernet interface. I
can ping them no problem from both ends.
When I add an ip address to one of the other interfaces I cannot ping it. I
would think that I should be able to do this since all the interfaces belong
to the same bridge-group.
I have tried various irb configs but I still don't think I need irb to
accomplish this.
Any help in understanding this is greatly appreciated.
Thanks
-Chuck
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