[j-nsp] VPLS pass tagged/untagged traffic

Chris Kawchuk juniperdude at gmail.com
Sun Mar 8 20:26:45 EDT 2015


> Chris,
> 
> Thanks, I just tried it and this works...guess I was making it more difficult that it needed to be.  I haven't tested spanning tree through it or other layer2 control protocols but you are thinking they should pass through just like and l2vpn?
> 
> Thanks again,
> 
> Kevin


Correct. They all pass into the VPLS instance "unmolested" as I like to call it. (RSTP, CDP, PVST+ etc..)

FWIW - I use this on SRX as MPLS-capable CPE for our VPLS service. (via targeted LDP L2CKT to the BGP VPLS on the "main PE"). This is a standard H-VPLS scenario, with a primary and a backup PE declared on the CPE). ( Naturally works on the native MX port as well, even without invoking an H-VPLS topology).

For sakes of completeness -- I use LDP<>BGP Internetworking in PE's VPLS to "stitch' the CPE's L2CKT into the VPLS instance directly, without using lt-* interfaces. Scales well & provides PE redundancy. Easily enough done (check the Juniper JMV course on VPLS -- this is covered in detail on the later chapters on how to do both LDP and BGP-VPLS in the same instance, and do it reasonably effectively via no-tunnel-services).

Anyways - doing the interface that way passes everything I can think of; sans LACP, but who the heck runs LACP into a multipoint VPLS anyways? =) (thats more of an E-LINE/P-to-P TLS service)

Glad it worked out for you.

- Ck.


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