Wired Intelligent Edge

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  • 1.  Loops in the switch

    Posted Apr 27, 2019 09:21 PM

    Will i be able to disable the ports if there are loops in the switches ?

    (example: port 1 is connected to port 2 which is not neccessary as per the config )

    My topology has JL262A switches



  • 2.  RE: Loops in the switch

    Posted Apr 28, 2019 03:27 AM
    What type of switch are you using?


  • 3.  RE: Loops in the switch

    Posted Jul 07, 2019 10:06 AM

    my network is having JL262A procurve 48 port switches



  • 4.  RE: Loops in the switch

    Posted Apr 30, 2019 05:16 AM

    Next to spanning tree on the edge interfaces you can use loop-protect, you can configure loop protect to disable ports for a period of time. i woud always advise to use spanning tree combined with loop-protect for edge loop detection.

     

    config example:

    loop-protect 1-48
    loop-protect disable-timer 60 (or any other value in seconds you wish)



  • 5.  RE: Loops in the switch

    Posted May 29, 2019 12:11 AM

    Hi,

     

    Loop protect is a good starting point but I would also look at BPDU protection. Loop Protect is only working on untagged ports, which are in the same VLAN and on the same switch. 

    I have written a post about loop protection and BPDU protection here:

    https://www.flomain.de/2018/01/protect-from-spanning-tree-loops-access-area/

     

    Just have a look and decides which one fits better in your environment. 

     

    BR

    Florian



  • 6.  RE: Loops in the switch

    Posted Jul 07, 2019 10:07 AM

    would loop protect disable the ports permanently



  • 7.  RE: Loops in the switch

    Posted Jul 24, 2019 10:04 AM

    if you use the loop-protect disable-timer XX where XX is the number of seconds the ports would be disabled for.  with out this command i believe the ports would be disabled until the switch reboots next.