Routing

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One vlan connect to two or more Vlan via L2circuit

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  • 1.  One vlan connect to two or more Vlan via L2circuit

    Posted 06-28-2018 03:43
      |   view attached

    Hi All

     

    I've one special condition as follow :

    Switch B connect to router B with two vlan into one l2circuit vc. And switch A connect to router A with one vlan

     

    As follow is diagram :

    螢幕快照 2018-06-28 下午6.23.29.png

    I tried to test and seems it's not working. L2circuit connection is up ,but Ping failed.

    Is it possbile to reach it ?

     

    As attachment is my configuration 

     

    Thanks 

    Cloud

     


    #mismatchVlan
    #l2circuit

    Attachment(s)



  • 2.  RE: One vlan connect to two or more Vlan via L2circuit

    Posted 06-29-2018 09:56

    Hi Cloud,

     

    I don't see any vlan config on the interface on router A.

     

    //Regards

    AD



  • 3.  RE: One vlan connect to two or more Vlan via L2circuit

    Posted 07-02-2018 03:02

    Hi 

     

    I think LDP-VPLS is what I would like when L2circuit is only support P2P. 

     

    Thanks for your sharing 

    Cloud 



  • 4.  RE: One vlan connect to two or more Vlan via L2circuit

    Posted 07-01-2018 20:41

    Hi 

     

    Yes, as you saw I don't set any vlan config on router A.

    Because switch A connecting to router A by using the access mode without tag vlan id.

     

     I hope side A without vlan can connect to any vlan on side B.

    Therefore, I need to strp off vlan id on side B.

     

    Is it possbile to reach this target ?

     

    Best regards,

    Cloud 



  • 5.  RE: One vlan connect to two or more Vlan via L2circuit
    Best Answer

    Posted 07-02-2018 02:11

    Hello,


    @Cloud wrote:

    Hi 

     

    Yes, as you saw I don't set any vlan config on router A.

    Because switch A connecting to router A by using the access mode without tag vlan id.

     

     I hope side A without vlan can connect to any vlan on side B.

     

     

    Is it possbile to reach this target ?

     

     


    Not with plain L2circuits. Plain Type-4 L2circuits are point-to-point only, meaning the number of VLANs is 1 on each side.

    You will need VPLS (BGP VPLS., or if You don't need/want/can't afford BGP VPLS).

    If LDP VPLS, then the L2circuit config can stay on one side (let's say side A for certainty) and the following config would be needed only on the other side (i.e. side B for certainty):

     

    routing-instances {
        LDP-VPLS {
            instance-type vpls;
            vlan-id none;
            interface xe-1/2/0.123; ## local IFL with tag 123
    	interface xe-2/3/0.456; ## local IFL with tag 456
            no-local-switching;
            protocols {
                vpls {
                    no-tunnel-services;
                    vpls-id 1024; ## the virtual-circuit-id on the side A must be also 1024
                    neighbor 203.0.113.41 { 
                        encapsulation-type ethernet;
                    }
                }
            }
        }
    }

     

    HTH

    Thx

    Alex