05-03-2021 01:52 PM
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 220.127.116.11
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.
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 18.104.22.168
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:
Solved! Go to Solution.
05-05-2021 07:02 AM
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.
06-28-2021 08:39 AM
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.
05-19-2021 02:29 PM
Ashlee, would you mind sending me the GTAC case number to firstname.lastname@example.org so I can sync with the GTAC engineer. Thanks Roger
05-11-2021 09:30 AM
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.
05-06-2021 07:54 AM
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.