From: Jacob Yocom-Piatt (jy-pfixedpointgroup.com)
Date: Wed Aug 01 2007 - 08:28:11 CDT

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Claudio Jeker wrote:
> On Wed, Aug 01, 2007 at 08:00:26AM -0500, Jacob Yocom-Piatt wrote:
>
>> here is a quick clarification of the cabling
>>
>> switch 1--------A-------switch 2
>> \--------------B----------/
>>
>>
>> where making connection B caused the drama. switch 1 is a nice managed
>> switch and switch 2 is a random POS.
>>
>> is this the expected behavior with carp when a cabling topology like
>> this comes up sans trunking, etc? clues about what happened would be great.
>>
>>
>
> You created a loop in the L2 broadcast domain and because carp is using
> multicast for the hellos you had a nice network meltdown (maybe your
> managed switch was realizing that and blocked the traffic).
>
>

timo, i don't have STP enabled. dunno much about it besides that i don't
use it :).

ah, thanks for clearing that up, claudio. that was my guess: the carp
multicasts got looped.

cheers,
jake

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