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QinQ and 891F

I would like to know if I can terminate several S-tags on a 891F router and differenting the traffic with the same internal C-tag by taking advantage of the unique identification provided by S-tag. Is it possible? In principle, once decapsulated I will have the same C-tag and hence traffic would be funnelled in the same VLAN (C-tag) but maybe there is a way to make a distinction based on the S-tag.

 

In other words, can the 891 process traffic associated to different S-tags abut the same C-tag? And how? I guess the VLAN database is built on C-tags, isn't it?

TIA, Gio

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