Routing

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  • 1.  Need some expert verification?

    Posted 01-30-2019 19:20

    Hi all,

     

    This statement below also impact if we disable the graceful restart under routing-option?

     

    Note

    If you configure graceful restart after a BGP or LDP session has been established, the BGP or LDP session restarts and the peers negotiate graceful restart capabilities. Also, the BGP peer routing statistics are reset to zero.



  • 2.  RE: Need some expert verification?

     
    Posted 01-30-2019 19:36

    Hi,


    Yes, it restarts when to enable and when you disable as well. Here is quick test:


    [edit]
    root@vMX4# run show bgp summary
    Groups: 1 Peers: 1 Down peers: 0
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    0 0 0 0 0 0
    bgp.l3vpn.0
    8 8 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.2.1.100 6553514725 14902 0 0 4d 15:39:56 Establ
    inet.0: 0/0/0/0
    bgp.l3vpn.0: 8/8/8/0
    VRF.inet.0: 4/8/8/0

    [edit]
    root@vMX4# set routing-options graceful-restart

     


    [edit]
    root@vMX4# show | compare
    [edit routing-options]
    + graceful-restart;


    [edit]
    root@vMX4# commit
    [edit]
    commit complete

     

    [edit]
    root@vMX4# run show bgp summary
    Groups: 1 Peers: 1 Down peers: 1
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    0 0 0 0 0 0
    bgp.l3vpn.0
    0 0 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.2.1.100 655350 0 0 0 7 Active


    [edit]
    root@vMX4# run show bgp summary
    Groups: 1 Peers: 1 Down peers: 0
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    0 0 0 0 0 0
    bgp.l3vpn.0
    8 8 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.2.1.100 65535 12 4 0 0 1 Establ
    inet.0: 0/0/0/0
    bgp.l3vpn.0: 8/8/8/0
    VRF.inet.0: 4/8/8/0


    root@vMX4# delete routing-options graceful-restart

     

    [edit]
    root@vMX4# show | compare
    [edit routing-options]
    - graceful-restart;

    [edit]
    root@vMX4# commit
    [edit]
    commit complete

    [edit]
    root@vMX4#

    [edit]
    root@vMX4# run show bgp summary
    Groups: 1 Peers: 1 Down peers: 1
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    0 0 0 0 0 0
    bgp.l3vpn.0
    0 0 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.2.1.100 65535 0 0 0 0 5 Active


    [edit]
    root@vMX4# run show bgp summary
    Groups: 1 Peers: 1 Down peers: 0
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    0 0 0 0 0 0
    bgp.l3vpn.0
    8 8 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.2.1.100 65535 19 9 0 0 2:53 Establ
    inet.0: 0/0/0/0
    bgp.l3vpn.0: 8/8/8/0
    VRF.inet.0: 4/8/8/0

     

     

     



  • 3.  RE: Need some expert verification?
    Best Answer

     
    Posted 01-30-2019 19:55

    and since it mentioned LDP,  it flaps as well.

     

    root@vMX4# run show ldp session
    Address State Connection Hold time Adv. Mode
    10.2.1.100 Operational Open 29 DU

     

     

    [edit]
    root@vMX4# set routing-options graceful-restart

    [edit]
    root@vMX4# show | compare
    [edit routing-options]
    + graceful-restart;

    [edit]
    root@vMX4# commit
    [edit]
    commit complete

     

    [edit]
    root@vMX4# run show ldp session
    Address State Connection Hold time Adv. Mode
    10.2.1.100 Nonexistent Closed 0 DU

     

    [edit]
    root@vMX4# run show ldp session
    Address State Connection Hold time Adv. Mode
    10.2.1.100 Operational Open 28 DU

     

    [edit]
    root@vMX4# delete routing-options graceful-restart

    [edit]
    root@vMX4# show | compare
    [edit routing-options]
    - graceful-restart;

     

    [edit]
    root@vMX4# commit
    [edit]
    commit complete

    [edit]


    root@vMX4# run show ldp session
    Address State Connection Hold time Adv. Mode
    10.2.1.100 Nonexistent Closed 0 DU

    [edit]
    root@vMX4# run show ldp session
    Address State Connection Hold time Adv. Mode
    10.2.1.100 Operational Open 29 DU