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need assistance for ISIS traffic engineering shortcut

This thread has been viewed 6 times
  • 1.  need assistance for ISIS traffic engineering shortcut

    Posted 07-01-2022 01:16
    I have a following topology
    The current routing table is as follows:
    lab@R3# run show route 2001:240::32/32                                      
    inet6.0: 149 destinations, 149 routes (149 active, 0 holddown, 0 hidden)
    Restart Complete
    + = Active Route, - = Last Active, * = Both
    2001:240::/32      *[BGP/170] 00:00:20, localpref 100, from 172.20.25.5
                          AS path: (65002) 74.39 33112 60177 60637 30709 57763 I, validation-state: unverified
                        > to fe80::250:5600:23a9:2abe via ge-0/0/4.35
    ​

    I need to make this route to use LSP as follows:

    lab@R3# run show route 2001:240::32/32                          
    inet6.0: 149 destinations, 149 routes (149 active, 0 holddown, 0 hidden)
    Restart Complete
    + = Active Route, - = Last Active, * = Both
    2001:240::/32      *[BGP/170] 00:16:29, localpref 100, from 172.20.25.5
                          AS path: (65002) 74.39 33112 60177 60637 30709 57763 I, validation-state: unverified
                        > to 172.20.20.14 via ge-0/0/4.35, label-switched-path r3-to-r5
    

    IGP between R3 and R5 is ISIS. I added the following configuration on both routers (R3 and R5)

    set protocols isis topologies ipv6-unicast
    set protocols isis traffic-engineering family inet6 shortcuts
    

    But I could not make this route to use LSP.
    LSP is configured

    root@R3# run show rsvp session | match R3-to-R5
    172.20.25.5     172.20.25.3     Up       0  1 FF       -   301536 r3-to-r5
    
    [edit]
    root@R3# run show rsvp session | match R5-to-R3
    172.20.25.3     172.20.25.5     Up       0  1 FF  300160        - r5-to-r3
    
    root@R5# run show rsvp session | match R3-to-R5
    172.20.25.5     172.20.25.3     Up       0  1 FF  301536        - r3-to-r5
    
    [edit]
    root@R5# run show rsvp session | match R5-to-R3
    172.20.25.3     172.20.25.5     Up       0  1 FF       -   300160 r5-to-r3
    
    
    
    
    

    Any ideas and insights will be really appreciated.