Odd STP messages seen since CatOS upgrade.

Discussion in 'Cisco' started by Mark, Feb 24, 2004.

  1. Mark

    Mark Guest

    Now I'm running 8.1(3) and I keep getting this message when certain
    ports are disconnected and reconnected. As the Root mac address
    doesn't seem to change I'm not overly worried but why does this say
    the root has changed.

    2004 Feb 24 14:31:32 gmt +01:00 %SPANTREE-7-PORTDEL_SUCCESS: 8/16
    deleted from vlan 2 (EthChnlConfig)
    2004 Feb 24 14:31:32 gmt +01:00 %ETHC-5-PORTFROMSTP:port 8/16 left
    bridge port 8/16
    2004 Feb 24 14:31:49 gmt +01:00 %ETHC-5-PORTTOSTP:port 8/16 joined
    bridge port 8/16
    2004 Feb 24 14:31:50 gmt +01:00 %SPANTREE-6-PORTFWD: Port 8/16 state
    in VLAN 2 changed to forwarding
    2004 Feb 24 14:33:48 gmt +01:00 %SPANTREE-5-ROOTCHANGE:Root changed
    for Vlan 2:New root port 14/1. New Root mac address is
    00-0a-f3-a1-e6-40.
    2004 Feb 24 14:33:48 gmt +01:00 %SPANTREE-7-PORTDEL_SUCCESS: 8/16
    deleted from vlan 2 (EthChnlConfig)
    2004 Feb 24 14:33:48 gmt +01:00 %ETHC-5-PORTFROMSTP:port 8/16 left
    bridge port 8/16
    2004 Feb 24 14:34:05 gmt +01:00 %ETHC-5-PORTTOSTP:port 8/16 joined
    bridge port 8/16
    2004 Feb 24 14:34:06 gmt +01:00 %SPANTREE-6-PORTFWD: Port 8/16 state
    in VLAN 2 changed to forwarding
    2004 Feb 24 14:35:25 gmt +01:00 %SPANTREE-5-ROOTCHANGE:Root changed
    for Vlan 2:New root port 14/1. New Root mac address is
    00-0a-f3-a1-e6-40.
    2004 Feb 24 14:35:25 gmt +01:00 %SPANTREE-7-PORTDEL_SUCCESS: 8/16
    deleted from vlan 2 (EthChnlConfig)
    2004 Feb 24 14:35:25 gmt +01:00 %ETHC-5-PORTFROMSTP:port 8/16 left
    bridge port 8/16
    2004 Feb 24 14:35:42 gmt +01:00 %ETHC-5-PORTTOSTP:port 8/16 joined
    bridge port 8/16
    2004 Feb 24 14:35:42 gmt +01:00 %SPANTREE-6-PORTFWD: Port 8/16 state
    in VLAN 2 changed to forwarding
    2004 Feb 24 14:41:04 gmt +01:00 %SPANTREE-5-ROOTCHANGE:Root changed
    for Vlan 2:New root port 14/1. New Root mac address is
    00-0a-f3-a1-e6-40.
    2004 Feb 24 14:41:04 gmt +01:00 %SPANTREE-7-PORTDEL_SUCCESS: 8/16
    deleted from vlan 2 (EthChnlConfig)
    2004 Feb 24 14:41:04 gmt +01:00 %ETHC-5-PORTFROMSTP:port 8/16 left
    bridge port 8/16
     
    Mark, Feb 24, 2004
    #1
    1. Advertisements

  2. It's probably just recalculating the root bridge every time this port flaps.
    Do you have bridge priorities set? Its electing its root bridge by the mac
    address, probably because they all have the same priority. If you set one
    with a better priority, it shouldn't recalculate like this every time.
    Otherwise, its not really a problem.
     
    Craig Johnson, Feb 24, 2004
    #2
    1. Advertisements

  3. Mark

    Mark Guest

    They are set, primary and secondary so despite the sys ID being added
    the intended root should always be clearly in the lead.

    VLAN 2
    Spanning tree mode PVST+
    Spanning tree type ieee
    Spanning tree enabled

    Designated Root 00-0a-f3-a1-e6-40
    Designated Root Priority 4098
    Designated Root Cost 3
    Designated Root Port 1/2,2/2 (agPort 14/1)
    Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec

    Bridge ID MAC ADDR 00-0a-8b-e1-99-40
    Bridge ID Priority 8194 (bridge priority: 8192, sys ID ext:
    2)
    Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec

    Port Vlan Port-State Cost Prio Portfast
    ------------------------ ---- ------------- --------- ---- --------
    1/2,2/2 2 forwarding 3 32 disabled
    5/1 2 forwarding 19 32 disabled
    5/2 2 forwarding 19 32 disabled
     
    Mark, Feb 25, 2004
    #3
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.