ExtremeSwitching (EXOS)

  • 1.  DHCP relay issues

    Posted 11-19-2014 18:11
    Hi Experts,

    I have issues on bootprelay function on my Summit460.

    Topo as follows:
    client server----(tag 983)Switch(tag 981)----Jumpstart server(DHCP server)

    I have defined the Bootprelay on my switch but the DHCP relay fails all the time and I can see many dropped response.

    ========================
    Bootprelay : Enabled on virtual router "VR-Default"DHCP Relay Agent Information Option : Enabled on virtual router "VR-Default"
    DHCP Relay Agent Information Check : Enabled on virtual router "VR-Default"
    DHCP Relay Agent Information Policy : Replace
    DHCP Relay Agent Information Remote-ID : "ENIQ-SW1"

    Bootprelay servers for virtual router "VR-Default":
    Destination: 10.30.64.132

    DHCP/BOOTP relay statistics for virtual router "VR-Default"
    Received from client = 467335 Received from server = 4431
    Requests relayed = 12739 Responses relayed = 0
    DHCP Discover = 465924 DHCP Offer = 4431
    DHCP Request = 6 DHCP Ack = 0
    DHCP Decline = 0 DHCP NAck = 0
    DHCP Release = 1388
    DHCP Inform = 17

    DHCP Information Option 82 packets statistics for virtual router "VR-Default"
    Received from client = 3255 Received from server = 0
    Requests replaced = 3255 Responses dropped = 4431
    Opt82 added to Requests = 8390

    Note: Default Remote-ID : System MAC Address
    ========================

    SW config in here. http://pan.baidu.com/s/1sd0y

    Kindly pls help me on this.

    Thanks.


  • 2.  RE: DHCP relay issues

    Posted 11-20-2014 17:20
    With a packet capture did you checked where exactly it is stuck during DORA process?


  • 3.  RE: DHCP relay issues

    Posted 11-20-2014 17:20
    Thanks Ravi. Issue got resolved by removing option 82.


  • 4.  RE: DHCP relay issues

    Posted 11-20-2014 17:20
    Excellent..