From: Kulcsár
Date: Thu Nov 09 2006 - 08:00:53 ART
Fallback bridging does not work for IPv4.
Fallback Bridging Configuration Guidelines
A maximum of 31 bridge groups can be configured on the switch.
An interface (an SVI or routed port) can be a member of only one bridge group.
Use a bridge group for each separately bridged (topologically distinct) network connected to the switch.
All protocols except IP (Version 4 and Version 6), Address Resolution Protocol (ARP), reverse ARP (RARP), LOOPBACK, and Frame Relay ARP are fallback bridged.
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225see/scg/swfallbk.htm#wp1038531
However, despite the fact that the UniverCD says that fallback bridging does not work for IPv6, it definitely worked for me in a test environment (I think the solution for one task in Internetwork Expert Workbook was fallback bridging IPv6)
Regards,
Andras
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Frank
Sent: Thursday, November 09, 2006 11:30 AM
To: Cisco certification
Subject: vlan-bridge
Michael Zuo schrieb:
Hi,
i have seen the "vlan-bridge" command for bridging between vlan's on one switch.
I have tested it to bridge two vlans like this:
int vl1
bridge-group 1
int vl2
bridge-group 1
bridge 1 protocol vlan-bridge
It's called fallback-bridging. But does this mean it does not bridge ip traffic?
Is it possible to bridge clients in these vlans per ip over this configuration? I found it will not work.
Using c3550-ipservicesk9-mz.122-25.SEE.
Frank
> Hi Group,
>
>
>
> The Lab Blue Print does not specify bridging as a separate item under
> the "bridging and switching" section. I wonder if this means they
> will not test it? There also has not been any discussion on this at GS
> over the last year... anyone?
>
>
>
> thanks
>
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