From: Nicolai Gersbo Solling (nicolai@xxxxxxxxx)
Date: Sun Apr 07 2002 - 14:51:49 GMT-3
Hi there Curtis!
R5 is not supposed to know Vlan 40! As I see it R6 should take care of the
bridging between Vlan 10 and 40...
Having said that it should be enough just to configure bridging on R6!
Or am I missing something obvious here?
Nic
-----Original Message-----
From: Curtis Phillips [mailto:cphillips@blazenet.net]
Sent: 7. april 2002 18:40
To: Nicolai Gersbo Solling; CCIE
Subject: Re: IRB - Transparent bridging problem!
Hello,
Router R5 does not know VLAN 40 and can not bridge between them with out
access to it.
To acheive this you have to trunk VLANS 10 and 40 over the port connected to
R5 using either
ISL or dot1q and related encaps on sub ints. of router 5 Fast ethernet int.
Then you can create a bridge-group adding both sub-ints to it. Also, it you
are attempting to route
any of this traffic u need to look at IRB.
HTH..
Curtis
----- Original Message -----
From: "Nicolai Gersbo Solling" <nicolai@cisco.com>
To: "CCIE" <ccielab@groupstudy.com>
Sent: Sunday, April 07, 2002 12:35 PM
Subject: IRB - Transparent bridging problem!
> I have the following Scenario:
>
> R5---Vlan 10---Switch---Vlan40---R6
>
> I wan't to bridge IP between R5 and R6...
>
> ...but I am a bit in doubt of which bridge protocol to use:
>
> R5 is a standard configuration and the switch has it's sc0 in Vlan 40.
>
> I have configured R6 (The router that actually takes care of the bridging)
> with the following:
>
> bridge 1 protocol vlan-bridge
> bridge 1 route ip
> bridge 1 route ipx
> !
> interface FastEthernet0.10
> encapsulation isl 10
> no ip redirects
> bridge-group 1
> !
> interface FastEthernet0.40
> encapsulation isl 40
> no ip redirects
> bridge-group 1
> !
> interface BVI1
> ip address 137.22.12.6 255.255.255.0
> no ip redirects
> standby ip 137.22.12.2
> standby priority 126
> standby preempt
>
> I got the config working now, but I had some strange problems getting it
to
> work...
> I got Encapsulation failed on R5 when I tried to ping R6 - Both the
> Mac-table of the switch and the Arp-cache of R6 looked good, but I could
> just not resolve on R5...
> Then I tried reloading R6 - This did not help...Somehow something was
wrong
> in the switch - After giveing that a good old powercycle - It works like a
> charm...
>
> Any good, and bright ideas why I encountered this...
> And is it Vlan Bridging I need to use?
>
> Nic
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:57:58 GMT-3