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New User
Posts: 3
Registered: ‎09-24-2009
0 Kudos
Accepted Solution

Blocking STP BPDU's over L2VPN and VPLS

Hello,

I am looking for a way to block spanning-tree BPDU's from being transmitted across  a VPLS or L2VPN instance. I have encountered an issue where Cisco switches configured with different native VLANs on their core facing interfaces will cause an err-disable state, due to the mismatched VLANs in the BPDU's. Is there an easy way to block BPDU's on a per interface or per routing-instance basis? I've tried configuring protocol *stp under the VPLS routing instance but it appears this combination is not valid. I am using MX series routers with 9.3R3.8 code. 

 

Thanks,

Nick 

Distinguished Expert
Posts: 493
Registered: ‎06-30-2009

Re: Blocking STP BPDU's over L2VPN and VPLS

Hi Nick,

 

you could write a firewall filter(see attachment) and apply it under routing-instance (see attachment).

 

If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it. 

 

Kind Regards

Michael Pergament

 

 

 

New User
Posts: 3
Registered: ‎09-24-2009
0 Kudos

Re: Blocking STP BPDU's over L2VPN and VPLS

Thanks Mike! That's exactly what I was looking for!

 

Nick