US patent 5473599

Nick Hilliard nick at
Thu May 8 11:15:10 UTC 2014

On 08/05/2014 12:09, Henning Brauer wrote:
> my switches seem to deal with that, wether they have special handling
> for that mac addr range or not i dunno.

I've seen this problem cause downtime on production networks.

fyi, it will probably work fine on hubs, but not on switches.

> again, stress the fact that afair we have gotten zero reports about
> that "issue" for 10 years, it obviously means that either
> 1) a vast majority of switches deal with it just fine
> 2) people know that vhids shouldn't clash and avoid that

Several of the results refer to openbsd mailing list postings.


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