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  • 1.  Problem with OSPF ECMP

    Posted Mar 12, 2011 09:46 PM
    Hi all,

    I'm using some Procurve 3400cl 48G as my TOR switch along with some cisco 3550.

    I'm getting the default routes from two core foundry's announcing via OSPF.

    This is working great in Cisco and not that great in HP.

    In cisco i have two default routes (0.0.0.0) received by ospf and in HP only one default route is received.

    If i kill the interface announcing this default route, the other one is active and both default routes should be active. ECMP is active by default on this switch.

    Can someone point me some directions ?

    Thanks
    Carlos


  • 2.  RE: Problem with OSPF ECMP

    Posted Mar 15, 2011 05:37 AM
    Hello again,

    Anyone ? How can i get this switch to have two default gateways annouced by OSPF and used them ?

    Right now he's only using one at the time.

    "ip load-sharing" is active and with value "4" by default.

    Thanks you
    Carlos Santos


  • 3.  RE: Problem with OSPF ECMP

    Posted Mar 16, 2011 06:14 AM
    Sounds odd.
    Could you post up the output of "sh ip route" and "sh ip ospf area"?


  • 4.  RE: Problem with OSPF ECMP

    Posted Mar 16, 2011 02:54 PM
    Hello,

    Rack B5# sh ip ospf area

    OSPF Area Information

    Area ID Type Cost SPFR ABR ASBR LSA Checksum
    --------------- ------ ----- ------ ---- ---- ----- ----------
    0.0.0.1 normal 1 543 2 6 56 0x001a687a


    Rack B5# sh ip route

    IP Route Entries

    Destination Gateway VLAN Type Sub-Type Metric Dist.
    ------------------ --------------- ---- --------- ---------- ---------- -----
    0.0.0.0/0 xx.xx.172.161 123 ospf External2 10 110
    xx.xx.0.20/30 xx.xx.172.161 123 ospf External2 10 110
    xx.xx.0.120/30 xx.xx.172.161 123 ospf InterArea 3 110
    xx.xx.47.0/24 xx.xx.172.161 123 ospf InterArea 3 110
    xx.xx.168.0/27 xx.xx.172.161 123 ospf InterArea 14 110
    xx.xx.168.32/30 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.40/29 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.48/29 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.56/29 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.64/28 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.80/29 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.168.88/29 xx.xx.172.161 123 ospf InterArea 4 110
    xx.xx.172.156/30 Uplink CR1 122 connected 0 0
    xx.xx.172.160/30 Uplink CR2 123 connected 0 0
    xx.xx.172.108/30 xx.xx.172.157 122 ospf IntraArea 2 110
    xx.xx.172.116/30 xx.xx.172.157 122 ospf IntraArea 2 110

    This list goes on, the main thing here is only one default route is active

    If you need something else, just ask.

    Thank you for your time
    Carlos Santos


  • 5.  RE: Problem with OSPF ECMP

    Posted Mar 17, 2011 08:50 AM
    Ok, would you be able to post the same ip route output for when the currently used interface is disabled?
    Could you also grab the output (with both interfaces up) of "sh ip ospf nei", "show ip ospf external" and "sh ip ospf interface".


  • 6.  RE: Problem with OSPF ECMP

    Posted Mar 17, 2011 01:19 PM
    Dear Mohammed Faiz,

    Thank you for your time, I've replaced the HP switches and everything is working as supposed.

    Again, thank you for trying to help me.
    Carlos Santos