S-Tag over VOSS Fabric using VSP 7400 Switches

[Ashlee_Smith]

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:

[Ludovico_Steven]

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]

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]

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]

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