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RIB capacity on RE-S-1800x4 32GB

  • 1.  RIB capacity on RE-S-1800x4 32GB

     
    Posted 01-14-2021 23:46
    Hi folks,

    I want to know the RIB capacity on RE-S-1800x4 32GB.

    I have a 10G IXIA port connected to an MX with the above RE, I am unable to push more than 10M routes.
    Please let me know the maximum capacity. Appreciate your help.


    Thanks & Regards


  • 2.  RE: RIB capacity on RE-S-1800x4 32GB

     
    Posted 01-16-2021 12:49
    I was told to expect 20M for the rib on this RE so you might want to check with both Ixia and Juniper support to confirm where the issue is.

    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
    http://puluka.com/home
    ------------------------------



  • 3.  RE: RIB capacity on RE-S-1800x4 32GB

     
    Posted 01-19-2021 01:01
    Thank you Steve, I am contemplating on this. I have added another IXIA port, let me try pushing some routes and see if now it actually installs beyond 10M.
    Will update here, my observations.


  • 4.  RE: RIB capacity on RE-S-1800x4 32GB

    Posted 29 days ago
    Hello!

    RE-S-1800x4 32GB could definitely hold more than 20M simple IPv4 routes.
    It is because in my lab RE-S-1800X2-16G-S

    mx480_re0> show route summary

    Feb 04 19:40:41

    Autonomous system number: 100

    Router ID: 1.1.1.1

    inet.0: 22000784 destinations, 22000785 routes (22000784 active, 0 holddown, 0 hidden)

    Direct: 4 routes, 3 active

    Local: 3 routes, 3 active

    BGP: 22000777 routes, 22000777 active

    Static: 1 routes, 1 active



    mx480_re0> show system memory

    Feb 04 19:41:01

    System memory usage distribution:

    Total memory: 16717508 Kbytes (100%)

    Reserved memory: 437348 Kbytes ( 2%)

    Wired memory: 1056028 Kbytes ( 6%)

    Active memory: 5977108 Kbytes ( 35%)

    Inactive memory: 5170424 Kbytes ( 30%)

    Cache memory: 0 Kbytes ( 0%)

    Free memory: 4076600 Kbytes ( 24%)



    But be careful of these numbers.

    First of all it is simple IPv4 announces without communities, Local Pref, MED, Single AS Path etc.
    In production enviromment or with IPv6/EVPN/Flow Spec... RIB capacity reduces.

    And we are talking only about RIB. Looks like 10M you hit FIB capacity.

    To check RIB capacity without FIB protect BGP routes installation to FIB

    routing-options {
    forwarding-table {
    export REJECT-to-FIB;
    }
    }
    policy-options {
    policy-statement REJECT-to-FIB {
    term 1 {
    from protocol bgp;
    then reject;
    }
    }
    }

    Best regards
    Vladimir



    ------------------------------
    VLADIMIR A
    ------------------------------



  • 5.  RE: RIB capacity on RE-S-1800x4 32GB

    Posted 29 days ago
    Actually I was so interested about the limits RIB with 16G memory,

    They are approx 40M in lab enviromnent (divide twice in real life as usual)

    engin@mx480_re0> show route summary
    Feb 04 20:45:05
    Autonomous system number: 100
    Router ID: 1.1.1.1

    inet.0: 40333007 destinations, 40333010 routes (40333007 active, 0 holddown, 0 hidden)
    Direct: 5 routes, 4 active
    Local: 4 routes, 4 active
    BGP: 40333000 routes, 40332998 active
    Static: 1 routes, 1 active

    inet6.0: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
    INET6: 1 routes, 1 active

    engin@mx480_re0> show bgp summary
    Feb 04 20:45:11
    Groups: 1 Peers: 2 Down peers: 0
    Table Tot Paths Act Paths Suppressed History Damp State Pending
    inet.0
    40333000 40332998 0 0 0 0
    Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped...
    10.1.1.2 200 25592 57 0 4 25:54 20110998/20111000/20111000/0 0/0/0/0
    10.2.2.2 200 25731 57 0 1 25:59 20222000/20222000/20222000/0 0/0/0/0

    engin@mx480_re0> show system memory
    Feb 04 20:45:20
    System memory usage distribution:
    Total memory: 16717508 Kbytes (100%)
    Reserved memory: 437348 Kbytes ( 2%)
    Wired memory: 1231760 Kbytes ( 7%)
    Active memory: 10364668 Kbytes ( 61%)
    Inactive memory: 3039800 Kbytes ( 18%)
    Cache memory: 0 Kbytes ( 0%)
    Free memory: 1643932 Kbytes ( 9%)


    Best regards
    Vladimir

    ------------------------------
    Vladimir
    ------------------------------



  • 6.  RE: RIB capacity on RE-S-1800x4 32GB

     
    Posted 29 days ago
    Thanks for posting the results of your testing.  Nice to see that Juniper promises are very conservative for capacities.

    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
    http://puluka.com/home
    ------------------------------