From: Manny Gonzalez (manny@xxxxxxx)
Date: Sun Feb 10 2002 - 14:48:26 GMT-3
When plainly bridging (no CRB, IRB, etc.) EVERYTHING is bridged... plain
and simple
When you turn on CRB, you have the choice of BRIDGING some protocols and
ROUTING others
With IRB and the BVI interface you now have the choice to BRIDGE [AND]
ROUTE any protocol.
Summary:
BRIDGE = BRIDGE (everything on one side, goes to the other (decisions
made at layer 2 only)
CRB = Bridge or Route the same protocol. BRIDGE some ROUTE some, not the
same protocol.
IRB = Best of three worlds. Route/Bridge same, all or some protocols
and/or route and bridge.
Hope this helps
joh wrote:
>
> HI,
>
> I`M TRYING TO GO INTO THE DEPTH OF IT..
>
> assume you have a router with four interfaces / all ethernet
>
> two of them [1 and 2] are in one brigde group
>
> ethernet 1
> ip address 10.10.10.1 255.255.255.0
> bridge-group 1
>
> ehternet 2
> ip address 20.10.10.1 255.255.255.0
> bridge-group 1
>
> ethernet3
> ip address 30.0.0.1 255.255.255.0
>
> QUestion..
>
> Between Interface 1 and 2. all protocols being bridged but IP....it is
> routed....!
>
> ? Does IP communication between 1 and 3 or 1 and 2 work ???
>
> i guess yes..but where is the benefit of CRB vs..the config above ???
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