[j-nsp] encapsulation flexible-ethernet-services

Chris Spears cspears at eng.oar.net
Tue May 5 12:30:54 EDT 2009

Flexible-vlan-tagging allows for mixing dot1q and QinQ tagging between 
logical units, not flexible-ethernet-services.

As they do different things, both can be applied on the same interface, 
and even used on the same logical unit.  For example, terminating a 
l2circuit into a switch with stacked tags, right alongside singly-tagged 


Patrik Olsson wrote:
> In short:
> Flexible ethernet services allow for mixing Q and QinQ tagging and not 
> using tags on different IFL:s on same physical interface. It also allows 
> the usage of different encapsulations for different IFL:s on smae 
> physical interface. Usable if you want to terminate L3VPN, L2VPN, 
> nativew IP etc on different VLAN tags on same physical interface.
> Cheers
> Patrik

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