[nsp] dot1q subints on 6500/sup720

Simon Lockhart simon.lockhart at bbc.co.uk
Tue Mar 30 14:42:41 EST 2004


On Tue Mar 30, 2004 at 02:20:35PM -0500, Jared Mauch wrote:
> 	you can't do subints on the 6k, they don't do what
> they do on other platforms (gsr, 7500, 7200).

...but you can with the GE-WAN blade? I presume I can create dot1q subints
on a ge-wan interface, and the vlan ids aren't seen in the L2 space on the
6500 at all? We're trying to avoid buying any of the OSM blades, because of
cost, at the moment, but may need to plan for them in the future if it's
the only way to do dot1q subints ona 6k like we can on the 7200/gsr.
 
> 	I thought cisco removed the ability to
> configure subints on the 6k due to this.  You want to use
> that as a l2 switch port and then terminate things on
> the "interface vlan4090" interface within the 6k.

Yes. 

> 	you should also check your (internal) vlan mappings
> that are assigned by your l3 ports on the 6k/7600 by 
> "sh vlan internal mapping" command.

Are there any gotchas to watch out for the the internal vlans? We'll be
using this box as almost exclusively L3.

Simon
-- 
Simon Lockhart     |   Tel: +44 (0)1628 407720 (x(01)37720) | Si fractum 
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