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Link Down cause STP and LACP

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  • 1.  Link Down cause STP and LACP

    Posted Sep 27, 2007 10:39 PM
    Hi all
    I don't understand why the link active change to inactive , show log i'm wondered the message log that the port was blocked by STP and LACP. I'm not sure this is the root cause but i sure my network didn't loop. The port is single link not aggreation link

    Logging on my switch procurve 2650 port 35:
    I 09/24/07 15:40:03 ports: port 35 is now off-line
    I 09/24/07 15:42:50 ports: port 35 is Blocked by LACP
    I 09/24/07 15:42:51 ports: port 35 is Blocked by STP
    I 09/24/07 15:42:52 ports: port 35 is now on-line
    I 09/24/07 15:43:05 ports: port 35 is now off-line


  • 2.  RE: Link Down cause STP and LACP

    Posted Sep 28, 2007 01:13 AM
    The port came up in non-forwarding mode and transitioned to forwarding 1 second later. So it appears RSTP is working fine. Similarly for LACP.

    I don't know why your link went down either, sadly. I would start by looking at the logs from the other end, if you have any.


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