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S-Tag over VOSS Fabric using VSP 7400 Switches

S-Tag over VOSS Fabric using VSP 7400 Switches

Ashlee_Smith
New Contributor

Hi All

 

TLDR: We cannot get S-Tag vlans to pass over the Fabric between our two VSP 7400 switches.

 

We have the following deployed in our network;

 

2 x Extreme VSP 7400 Software version 8.0.5.1

These are joined by two 100Gb cables.

ISIS is enabled

ISIS Spbm 1

The Fibre provider port is Flex-uni enabled and Encapsulation Dot1Q

The Router uplink is Flex-uni enabled and Encapsulation Dot1Q

As a side note we tried removed Encapsulation Dot1Q and it made no difference. 

 

Scenario:

 

We have a fibre provider that is handing services over as S-Tags.

Currently over this setup we are able to pass C-Tags but cannot pass S-Tags.

We can learn MAC address entries when using S-Tag on both switches across the I-SID but not on the edge devices these VLANS terminate onto.

 

Configuration we tried to get it working:

 

Switch 1 - Where fibre provider plugs into

Create I-SID 1000 

c-vid 1000 port 1/1 (Fibre provider)

 

Switch 2 - Where the uplink Router plugs into

Create I-SID 1000 

c-vid 1000 port 1/5 (uplink to Router)

 

This does not work unfortunately, if we drop the S-Tag identifier we can learn MAC addresses and push L3 traffic across. 

 

Things we have tried alternative to config changes:

 

Deployed additional 2 x Extreme VSP 7400s and upgraded them to Software version 8.3.0.0

 

Even on this version we cannot get it working.

 

I have followed this thread and downloaded the PDF and according to that we are doing everything correctly:

 

1 ACCEPTED SOLUTION

Roger_Lapuh
Contributor II
7afde2b986444b1f92df8f7531b93cd3_f09021fb-6622-42c5-914c-25bc84d0987c.png

QinQ packet coming from the provider, otherwise VSP does not know to look at the q-tag. VSP does not support QinQ natively at this point. This would require a feature request.

Roger

View solution in original post

10 REPLIES 10

Ludovico_Steven
Contributor III

I personally re-verified the QinQ setup using VSP7400s and it works correctly. From the packet captures sent to GTAC it would appear that the ethertype in use was not 8100 but 88a8.

Roger_Lapuh
Contributor II

Ashlee, would you mind sending me the GTAC case number to rlapuh@extremenetworks.com so I can sync with the GTAC engineer. Thanks Roger

Ashlee_Smith
New Contributor

Obviously.

We have a GTAC case opened.

If you are following everything according to Ludovico’s document, it should work.

I followed this to the T same firmware and configuration, it did not work sadly.

 

Will see what GTAC comes back with, thanks for the replies. 

Roger_Lapuh
Contributor II

Obviously I can’t debug your case here. If you are following everything according to Ludovico’s document, it should work, otherwise I suggest to open a GTAC case. This is not the first time an S-TAG is transported over an SPB fabric. 

Thanks Roger

GTM-P2G8KFN