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HP Switch 3500yl-48G(J8693A) strange MAC disappearance

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  • 1.  HP Switch 3500yl-48G(J8693A) strange MAC disappearance

    Posted Jan 21, 2016 03:40 PM
      |   view attached

    There are 4 HP Switch 3500yl-48G(J8693A) (K.15.10.0009, ROM K.15.30). All 4 switches connected in mesh network. Two of them connected to router over trunks. STP is enabled and default. Detail in attached file "ProCurve-issues.pg"

    Have quite strange behavior.

    1. Ping from host2 to hostX - all fine:

    [root@localhost ~]# ping 10.128.149.8
    PING 10.128.149.8 (10.128.149.8) 56(84) bytes of data.
    64 bytes from 10.128.149.8: icmp_seq=1 ttl=64 time=0.542 ms
    ...

    64 bytes from 10.128.149.8: icmp_seq=9 ttl=64 time=0.602 ms
    ^C
    --- 10.128.149.8 ping statistics ---
    9 packets transmitted, 9 received, 0% packet loss, time 7999ms
    rtt min/avg/max/mdev = 0.541/0.567/0.615/0.038 ms

    from switch:

    R1SW1# show mac-address vlan 100

    Status and Counters - Address Table - VLAN 100

    MAC Address Port
    ------------- -------
    001b21-c56ce0 5
    001e79-305400 Trk1
    002128-453905 9
    0026f1-3c6c40 Mesh
    0026f1-412e00 Mesh
    64d814-dce40e Trk1
    64d814-dce40f Trk1
    b499ba-8db500 Mesh

    The Port 9 belongs to HostX.

    2. If I try in same time ping HostX from Host1, the all fail.

    MAC address disappear from switch and ping fail fom host2 and host1.

    Status and Counters - Address Table - VLAN 100

    MAC Address Port
    ------------- -------
    001b21-c56ce0 Trk1
    001e79-305400 Trk1
    002128-453905 Trk1
    0026f1-3c6c40 Mesh
    0026f1-412e00 Mesh
    64d814-dce40e Trk1
    64d814-dce40f Trk1
    b499ba-8db500 Mesh


    #ProCurve
    #dissapear
    #Mac


  • 2.  RE: HP Switch 3500yl-48G(J8693A) strange MAC disappearance

    Posted Jan 22, 2016 02:14 PM

    MAC address 002128-453905 doesn't disappear, it moved to trk link!  There must be some looping going on.
    Double-check bonding and STP on redundant links to the router