[c-nsp] Possible Stupid Questions Alert - Combining VLAN's

[Jeff Fitzwater]

I believe the rewrite is 802.1Q to ISL only on 6500 IOS.

Jeff Fitzwater
OIT Network System
Princeton University

Gert Doering wrote:
> Hi,
>
> On Tue, Jun 26, 2007 at 02:55:02AM +1000, Skeeve Stevens wrote:
>   
>> Now I know what the concept is called. but needing a router sucks.
>>     
>
> Actually I'm fairly sure I've seen support for VLAN tag rewrite on 
> Catalyst 6500s as well.
>
> There are some caveats (like "depending on the line card, a number of
> ethernet ports share the same VLAN mapping table, because it's handled
> by the same ASIC", and I'm sure that it won't work at all on certain 
> boards) - and it might be somewhat over the budget.
>
> OTOH, if a second-hand 6500 with Sup2 can do it (which I'm not sure),
> it might not be *that* expensive either.
>
> Dunno about smaller switches - might be there, or might not.
>
> gert
>