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  • 1.  RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 05, 2024 05:32 PM

    I have an 8320 that is running RPVST. 

    in the course of 24hrs is am seeing about 150-200 Event ID 5007 Topology change generated messages in the logs. I am looking at show spanning-tree and diag-dump, but I'm not seeing anything that is standing out. I know a handful are ok, but this seems like more than normal. Is there anything in particular I should check



  • 2.  RE: RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 05, 2024 05:38 PM

    I had something similar happen to me and turned out to be a loop issue with a piece of ISP equipment. Try enabling loop-protect on your uplink ports with the loop-protect action do-not-disable command and see if you start seeing loop messages in your logs.

    switch# config

    switch(config)# interface 1/1/1 <- uplink port

    switch(config-if)# loop-protect

    switch(config-if)# loop-protect action do-not-disable


    Original Message


  • 3.  RE: RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 06, 2024 02:08 AM

    Hi

     

    Can you identify the source of the topology changes? Either it's a (or even multiple) local interface or it's generated by another bridge that participates in the STP topology.

    If coming from another bridge, you should investigate on that bridge. A possible source could be that you have edge ports (i.e. where a client computer that comes and goes is connected to) where you forgot to configure "port-type admin-edge". If a switch doesn't consider a port as edge port, TCNs are generated if the interface comes up or goes down.

     

    Could you please post the full log message (event 5007) you see?

     

    Regards,

    Thomas

     




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  • 4.  RE: RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 10, 2024 04:45 PM
    Edited by Rford2798 Aug 10, 2024 04:53 PM
      |   view attached

    Thank you for the help, I did try the loop-protect, but I see no log messages. 


    I did forget the port-type, I added that.

    I was able to trace out the connection and it goes from an Aruba 8320 JL581A to a device for a Door Alarm system. I do have a port that goes from an Aruba 6300M JL661A to and PC that does the same. I see no loops, this is message I get in my logs:


    Original Message


  • 5.  RE: RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 14, 2024 04:47 PM

    Since adding the admin-edge command I no longer see any spanning-tree changes. The port still goes up/ down. I am thinking it is an issue with the end device at this point. I toned out the cabling and that is good…


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  • 6.  RE: RPVST on VLAN and a lot of Event ID 5007 topology changes

    Posted Aug 16, 2024 07:54 PM

     During spanning tree establishment, ports with admin-edge enabled transition immediately to the forwarding state.



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    Any opinions expressed here are solely my own and not necessarily that of HPE or Aruba.
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    Original Message


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