[c-nsp] Same MAC addresses from two ports on different VLAN

Phil Mayers p.mayers at imperial.ac.uk
Sun Mar 14 08:55:00 EDT 2010


On 03/12/2010 10:48 PM, Gert Doering wrote:
>> I can think of so many possible problems with this that I want to see
>> if this is common design of switches or just Extreme and I need to
>> start using different L2 switches.
>
> "just Extreme".  But it wouldn't surprise me to see similar engineering
> shortcuts in 3com and such, too.

Nope. All 3Com devices from superstack II onwards have per-VLAN FDBs, 
and all the Extreme's I've ever seen do too.

Tempting though it is to rag on the cheaper switches, they do usually 
manage the basics ;o)


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