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The RSVP FastReroute Object

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  • 1.  The RSVP FastReroute Object

     
    Posted 12-04-2020 11:54
    Hi everyone.

    I have here an RSVP Path message with the Juniper proprietary 'FastReroute' object.

    RSVP send Path 1.1.1.1->4.4.4.4 Len=240 ge-0/0/0.0 flags=0x1 ttl=255

      Session7 Len 16 4.4.4.4(port/tunnel ID 33346 Ext-ID 1.1.1.1) Proto 0

      Hop      Len 12 10.10.10.1/0x80000002

      Time     Len  8 30000 ms

      SrcRoute Len 28  10.10.10.2 S 20.20.20.2 S 30.30.30.2 S

      LabelRequest Len  8 EtherType 0x800

      Properties Len 12 Primary path

      SessionAttribute Len 16 Prio (7,0) flag 0x2 "R1-R4"

      FastReroute Len 24 Prio(7,0) Hop 6 Flag 0x1 BW 0bps Include 0x00000000 Exclude 0x00000000 IncludeAll 0x00000000

      Sender7  Len 12 1.1.1.1(port/lsp ID  1)

      Tspec    Len 36 rate 0bps size 0bps peak Infbps m 20 M 1500

      ADspec   Len 48 MTU 1500

      RecRoute Len 12  10.10.10.1


    Can someone please point me to a description of the 'Flag' field of the FastReroute object?

    Thanks,
    Deepak



  • 2.  RE: The RSVP FastReroute Object
    Best Answer

    Posted 12-05-2020 06:28
    The FAST_REROUTE objects/flags are defined in https://tools.ietf.org/html/rfc4090#section-4.1.

    The object is described in the PATH message and shipped out of the Ingress LSR. From a Fast Reroute perspective, it could be describing two type of protections:

    - 0x01 One-to-One Backup Desired; OR
    - 0x02 Facility Backup Desired.

    HTH,

    Elvin


  • 3.  RE: The RSVP FastReroute Object

     
    Posted 12-05-2020 11:21
    Thanks Elvin!


  • 4.  RE: The RSVP FastReroute Object

    Posted 12-07-2020 06:36
    Glad I was able to help.

    Regards,

    Elvin