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Wireless Networks Thread, HP Wireless DHCP Problem in Technical; Hi I have a strange problem, which appears only to have started over the weekend. In short, DHCP requests over ...
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    amvc's Avatar
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    HP Wireless DHCP Problem

    Hi

    I have a strange problem, which appears only to have started over the weekend. In short, DHCP requests over wireless are timing out in the majority of cases and so IP addresses are not being renewed.

    The DHCP server is a Windows 2003 machine. I have installed Wireshark on this, as well as a few wireless clients. What I see is that DHCP DISCOVERS are always received by the DHCP server from the wireless cleints, but DHCP OFFERS are not always received back at the client. They appear to go missing.

    I suspect a VLAN routing issue perhaps (especially as wired DHCP requests are always dealt with and sent/received correctly), but I can't see what.

    The wireless module is a HP Wireless Edge XL Module, situated in Port H of a HP 5308xl switch. I have included the config of that switch below.

    Any help much appreciated.

    Andrew

    -----
    Startup configuration:

    ; J4819A Configuration Editor; Created on release #E.11.03

    hostname "HP Procurve 5308xl"
    snmp-server contact "ICT"
    snmp-server location ""
    web-management management-url ""
    module 3 type J4878B
    module 7 type J4907A
    module 2 type J4878A
    module 1 type J4878A
    module 4 type J8988A
    module 8 type J9001A
    module 6 type J4907A
    module 5 type J4821B
    interface G16
    speed-duplex 100-full
    exit
    interface F16
    speed-duplex 100-full
    exit
    ip default-gateway
    snmp-server community "public" Unrestricted
    vlan 1
    name "DEFAULT_VLAN"
    untagged A4,B1-B3,C2-C4,E1-E4,F1-F16,G1-G16
    ip address 255.255.252.0
    tagged A1-A3,B4,C1,D1,HUP
    no untagged HDP
    ip igmp
    exit
    vlan 2100
    name "VLAN2100"
    tagged A1-A3,B4,C1,D1,HDP
    exit
    lldp auto-provision radio-ports auto-vlan 2100 auto
    vlan 2
    name "VLAN2"
    tagged D1,F15,HUP
    exit
    vlan 3
    name "VLAN3"
    tagged D1,F15,HUP
    exit
    fault-finder bad-driver sensitivity high
    fault-finder bad-transceiver sensitivity high
    fault-finder bad-cable sensitivity high
    fault-finder too-long-cable sensitivity high
    fault-finder over-bandwidth sensitivity high
    fault-finder broadcast-storm sensitivity high
    fault-finder loss-of-link sensitivity high
    fault-finder duplex-mismatch-HDx sensitivity high
    fault-finder duplex-mismatch-FDx sensitivity high
    ; Encoded configuration data follows.
    ; Modifying this data makes the configuration unusable for restores.
    wireless-services H config "02f0qlNYMpaC3nA4s8Q/ydhF5E1BR0lDADVhMzg"
    wireless-services H config "0Yzg0MjMwOGU4YWNkZGQ5MmNjMWI4MGNkOTk0AA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAABAAAAAAAAAApwIHv///wAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
    wireless-services H config "QAAAAAAAAAAAAAA"
    ; End of configuration data.
    password manager
    password operator
    Last edited by amvc; 13th September 2011 at 11:33 AM.

  2. #2
    amvc's Avatar
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    Fixed it myself. An upgrade to the the 5308xl firmware did the trick. Can't say why though...

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