[AusNOG] RSPAN and VPLS "fun"

[Dino Sosic]

Hi guys,

I have a bit of a tricky thing to set up, so I wonder if someone has experience with this. I have a bunch of ASR920s sitting at the edge, acting as PE devices. On the other side of the VPNv4/l2VPN cloud I have a wireshark box sitting and listening on an interface. I want to be able to take a capture snap from one of the ASR920, using RSPAN (ERSPAN is not supported on ASR920), dump it into the VPLS domain and deliver it on the other side of the cloud to the wireshark.

I am sending a tagged traffic (basically just a ping to test, to the BDI of the ASR920 PE), and I can capture the traffic. I also have a working VFI and L2vpn part, however I am unable to tie these two together somehow. Here is a picture to help visualize a bit:

https://s31.postimg.org/ixqp4qqgb/RSPAN_VPLS.jpg

Feel free to ping me off the list if you have any XP in doing this.
Cheers,
Dino


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