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H-VPLS document questions

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  • 1.  H-VPLS document questions

    Posted 10-12-2010 08:30
      |   view attached

    hi

     

    having just read the juniper configuring Hierarchical VPLS I have a couple of questions:

     

    1.  Is the example for this book given that fact that there are multiple CE units all in the same LAN/broadcast domain?

    2.  If on the PE1 MTU-s unit I had another CE device connected how would I differentiate the traffic?

          something along the lines of:

          PE1 -> would need another l2circuit towards the PE3/PE5 nodes?

          PE5/PE3 -> would need another VPLS instance with a neighbor of PE1 and the correct circuit-ID?

    3.  In this H-VPLS setup the vlan tag manipulation and CoS stuff is done on the MTU-s and the other nodes ssimply forward frames?

     

     

     

     


    #H-VPLS

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  • 2.  RE: H-VPLS document questions
    Best Answer

    Posted 10-20-2010 07:46

    due to the over whelming response I had to this post, I will place the answers here for others:

     

    1.  Is the example for this book given that fact that there are multiple CE units all in the same LAN/broadcast domain?

          yes, all the CPE devices are in the same LAN segment

    2.  If on the PE1 MTU-s unit I had another CE device connected how would I differentiate the traffic?

          something along the lines of:

          PE1 -> would need another l2circuit towards the PE3/PE5 nodes?

          PE5/PE3 -> would need another VPLS instance with a neighbor of PE1 and the correct circuit-ID?

          so to setup another service independant of the first one:

          different l2circuit ID's on MTU-s

          different VPLS instance on the PE-rs nodes accepting those new l2circuit ID's.


    3.  In this H-VPLS setup the vlan tag manipulation and CoS stuff is done on the MTU-s and the other nodes ssimply forward frames?

        Yes this is the normal way, the marking and manipulation is performed at the edge of the network.



  • 3.  RE: H-VPLS document questions

    Posted 12-02-2010 15:07

    One thing that I'm missing here is how to terminate multipe l2circuits from the same neighbor address into the VPLS instance.

     

    Logically it appears simple that i can do this:

     

    {master}[edit routing-instances]
    Lab-1@PE-B# show
    TESTv.ELAN {
        instance-type vpls;
        interface ge-0/0/0.101;
        vrf-target target:11427:8000;
        protocols {
            vpls {
                no-tunnel-services;
                site TEST {
                    automatic-site-id;
                }
                vpls-id 2000;
                mtu 1950;
                mesh-group VC_10 {
                    vpls-id 10;
                    neighbor 10.0.0.3;    <--- note the same neighbor but different VC
                }
                mesh-group VC_11 {
                    vpls-id 11;
                    neighbor 10.0.0.3;   <--- note the same neighbor but different VC
                }
            }
        }
    }
                        
    {master}[edit routing-instances]
    Lab-1@PE-B#

     

    However when I come to commit this I get an error because I have the same neighbor in 2 differnet mesh-groups:

     

    {master}[edit routing-instances]
    Lab-1@PE-B# commit
    re0:
    [edit routing-instances TESTv.ELAN protocols vpls mesh-group VC_11]
      'neighbor 10.0.0.3'
        LDP-VPLS: Same neighbor 10.0.0.3 is configured in VC_10 mesh-group also
    error: configuration check-out failed

    {master}[edit routing-instances]
    Lab-1@PE-B#

     

    Why is this not allowed? it seams like it should be.

     

    R./