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Hi All,

I am trying to simulate a NNI connection between two switches using service instances.
Although I can put the command , the brdige-domain does not work and it does not appear under running config.

Does anybody have the same issues and did anyone have tried to simulate this feature before?

Mark

what is NNI??

HI Uldis,

network to network interfaces.
If I describe it correctly, assuming I am a customer with multiple remote sites from my HQ.

I have a single switch port connecting to the carrier as a single trunk.
I then do service instances where in I match the carriers assigned encapsulation , and I can either rewrite/tag those vlans and brdige it on my domain with our internal vlans.

For example, I have a PE router that have subinterfaces for ce routers in siteA, Site B Site C.
I will use vlan 11 for Site A, Vlan 12 for Site B and Vlan 13 for site C.
if this is a pure L1 then I will just need to order 3 separate lines for each sites. This means I needs to trunk them end to end on all switches over 3 separate lines
However, when we are using NNI , from the PE router, I will just need to trunk them all the way to my NNI switch in my HQ , and create service instances on the trunk port facing carrier. The carrier will need to assign me a vlan that I can map to.

Carrier vlan assigned for site A - 101 , site B- 102 , site C - 103
My vlan assigned for Saite A - 11 , Site B - 12 , Site C - 13

My config in HQ will be like this:

vlan 11
vlan 12
vlan13

interface gix
desc trunk to carrier
switchport trunk allowed vlan none
switchport mode trunk

service instance 11 ethernet
description myremoteSiteA
encapsulation dot1q 101 second-dot1q 11
rewrite ingress tag pop 2 symmetric
bridge-domain 11

service instance 12 ethernet
description myremoteSiteB
encapsulation dot1q 102 second-dot1q 12
rewrite ingress tag pop 2 symmetric
bridge-domain 12

service instance 13 ethernet
description myremoteSiteC
encapsulation dot1q 103 second-dot1q 13
rewrite ingress tag pop 2 symmetric
bridge-domain 13

On a remote site, i just need to configure the subinterface based on my vlan assignment , since it is the responsibility of the carrier to map the vlans on their end.

Hope this explanation is clear.
we are supportting metroethernet services on our network , so this NNI concept to carrier links are in use.

Mark

Not clear
better upload topology....

HI Uldis,

I attached the draw file.
Let me know if you have any questions, thanks for looking

Mark

It seems to be, many Metro features such as NNI did't support in vIOS L2.
Here the list of supported features
https://learningnetwork.cisco.com/docs/DOC-30404

SIR, please do not mess virtual environment with real stuff.
It is not supported on vIOS, thats it

All questions to cisco now, why
It is not EVE issue that image does not supports it....

UD

thanks guys