vMX

Expand all | Collapse all

Anycast RP with MSDP (inter domain) question

  • 1.  Anycast RP with MSDP (inter domain) question

    Posted 10-21-2020 22:04

    I have the following topology

    MSDP.PNG

    I have MSDP connection between RP1 and RP3. I expected to ping from S-2 to R-1. Can I do that ?

    S-2#ping 239.0.33.1  (239.0.33.1 is registered from R-1)
    Type escape sequence to abort.
    Sending 1, 100-byte ICMP Echos to 239.0.33.1, timeout is 2 seconds:

     

    root@RP3# run show msdp
    Peer address Local address State Last up/down Peer-Group SA Count
    1.1.1.1 33.33.33.33 Established 03:21:25 Anycast 0/0

     

    root@RP3# run show route table inet.4

    inet.4: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
    + = Active Route, - = Last Active, * = Both

    239.0.33.1,10.100.112.22/64*[MSDP/175/2] 00:00:36, from 111.111.111.111
    Local

     

    10.100.112.22 is configured on S-2.

    Any insights ?   what have I missed ?

     

    thanks a lot !!



    .



  • 2.  Re: Anycast RP with MSDP (inter domain) question

    Posted 10-21-2020 22:14

    Hello,

    You missed the multicast TTL, default is 1.

    Please try:

     

    ping 239.0.33.1 ttl 20

     

    HTH

    Thx

    Alex



  • 3.  Re: Anycast RP with MSDP (inter domain) question

    Posted 10-22-2020 07:25

    msdp-1.PNG

    TTL is 255

     

    thanks !!



  • 4.  Re: Anycast RP with MSDP (inter domain) question

    Posted 10-22-2020 07:41

    ge-0/0/2 on both RPs should be configured to be pim sparse mode ?

     

    thanks !!



  • 5.  Re: Anycast RP with MSDP (inter domain) question

    Posted 10-22-2020 12:04

    inter domain RPs need to be pim neighborship ?

    thanks !!