[j-nsp] Juniper QinQ problem

[Mark Tinka]

On Wednesday, August 31, 2011 10:29:31 PM sthaug at nethelp.no 
wrote:

> http://www.gossamer-threads.com/lists/cisco/nsp/99661
> 
> For a *switch* you normally expect VLANs to be "global"
> or "chassis wide". For a *router* you normally expect
> VLANs to be per-port/per-interface.
> 
> And then there are boxes like Cisco 7600 "routers" :-)
> 
> (Yes, I realize this is a Juniper list.)

I guess it's reasonable to discuss them as it's general 
design principle regardless of vendor.

Truth be told, the ES/ES+ line cards on the 7600 (and now 
6500) make VLAN ID's locally significant to a port on said 
line cards (scenarios may vary based on line card generation 
and number of tags used on sub-interfaces). However, those 
cards are pricey, and depending on your needs, an ASR9000 or 
MX240/480/960 may be more ideal.

Cheers,

Mark.
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