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Administrative Groups MPLS

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  • 1.  Administrative Groups MPLS

    Posted 07-30-2017 03:15

    Hi all, 

    Which traffic flow LSP go from A -> D from the scenarios below? Top or down, A-B-D or A-C-D?

    a. Scenarios 1

     Capture.GIF

    [edit protocols mpls]
    root@rA# show 
    label-switched-path to-D {
        to 4.4.4.4;
        primary primary-path {
            admin-group include-any left;
        }
    }

    with admin-group on each Router A, B, C, D are shown respectively below 

    [edit protocols mpls]
    root@rA# show 
    interface ge-0/0/1.0 { // facing to router B
        admin-group left
    }
    interface ge-0/0/2.0 { // facing to router C
        admin-group right
    }
    
    [edit protocols mpls]
    root@rB# show 
    interface ge-0/0/1.0 { // facing to router A
        admin-group right
    }
    interface ge-0/0/2.0 { // facing to router D
        admin-group left
    }
    
    [edit protocols mpls]
    root@rC# show 
    interface ge-0/0/1.0 { // facing to router A
        admin-group left
    }
    interface ge-0/0/2.0 { // facing to router D
        admin-group right
    }
    
    [edit protocols mpls]
    root@rD# show 
    interface ge-0/0/1.0 { // facing to router C
        admin-group left
    }
    interface ge-0/0/2.0 { // facing to router B
        admin-group right
    }



    b. Scenarios 2
    Capture1.GIF

     

    [edit protocols mpls]
    root@rA# show 
    label-switched-path to-D {
        to 4.4.4.4;
        primary primary-path {
            admin-group include-any left;
        }
    }


     with IGP metric on each Router A, B, C, D are shown respectively below 

    [edit protocols ospf area 0.0.0.0]
    root@rA# show 
    interface ge-0/0/1.0 { // facing to router B
        metric 10;
    }
    interface ge-0/0/2.0 { // facing to router C
        metric 20;
    }
    
    [edit protocols ospf area 0.0.0.0]
    root@rB# show 
    interface ge-0/0/1.0 { // facing to router D
        metric 10;
    }
    interface ge-0/0/2.0 { // facing to router A
        metric 20;
    }
    
    [edit protocols ospf area 0.0.0.0]
    root@rC# show 
    interface ge-0/0/1.0 { // facing to router A
        metric 10;
    }
    interface ge-0/0/2.0 { // facing to router D
        metric 20;
    }
    
    [edit protocols ospf area 0.0.0.0]
    root@rD# show 
    interface ge-0/0/1.0 { // facing to router C
        metric 10;
    }
    interface ge-0/0/2.0 { // facing to router B
        metric 20;
    }


    Hope to receive 2 answers from 2 scenarios respectively.

    Thank all,
    Hoang Nguyen Huy



  • 2.  RE: Administrative Groups MPLS
    Best Answer

    Posted 08-26-2017 21:56

    Hi,

     

    Can you please paste your primary-path configuration as it's missing in below output.

     

    If you remove the primary-path configuration form the protocol mpls configuration and apply "admin-group include-any Left" only then In Both scenario, LSP will follow path as below

    A>B>D

     

    HTH

    Harpreet