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Bring performance and reliability to your network with the Aruba Core, Aggregation, and Access layer switches. Discuss the latest features and functionality of the ArubaOS-Switch and ArubaOS-CX devices, and find ways to improve security across your network to bring together a mobile first solution.
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DHCP no leases available.

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  • 1.  DHCP no leases available.

    Posted Aug 23, 2021 12:00 PM
    I'm running DHCP server on my 5406.
    I have several pools that seem to work fine, but one does not appear to be releasing leases for re-use.
    I did a clear DHCP binding and that only freed up the bindings that were currently active. 
    Free leases are incrementing down as devices reconnect. 

    Pool           : POOL

      Lease Period   : 0:04:00

      Low Threshold  : 201

      High Threshold : 802

      Free Leases    : 50


    dhcp-server pool "POOL"

       default-router ""

       dns-server ""

       domain-name "loc.domain.local"

       lease 00:04:00




    Chris Bailey

  • 2.  RE: DHCP no leases available.

    Posted Aug 23, 2021 03:37 PM
    Hi Chris, how many IP leases your Aruba 5406R zl2 currently released system wide? What AOS-Switch version is it running on exactly?

    Davide Poletto

  • 3.  RE: DHCP no leases available.

    Posted Aug 23, 2021 05:20 PM
    Status and Counters - DHCP Server

    Address Pools : 7
    Automatic Bindings : 139
    Manual Bindings : 0
    Expired/Free Bindings : 1812
    Malformed Messages : 0
     sh ver:
    Image stamp: /ws/swbuildm/rel_ajanta_qaoff/code/build/bom(swbuildm_rel_ajanta_qaoff_rel_ajanta)
    Jun 7 2021 21:36:04
    Boot Image: Secondary

    Boot ROM Version: KB.16.01.0006
    Active Boot ROM: Primary

    I was able to free up those leases.
    I disabled and reenabled the dhcp server and ran clear dhcp-server stat  and clear shcp-server conflicts

    I am not sure which of those fixed this issue for now.  Currently 948 free leases on that pool.  I will monitor and report back.

    Chris Bailey