DHCP relay issues

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  • Updated 4 years ago
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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.

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

Kindly pls help me on this.

Thanks.
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Leo Gu

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Posted 4 years ago

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Photo of Ravisekar, Rajamanickam

Ravisekar, Rajamanickam, Alum

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With a packet capture did you checked where exactly it is stuck during DORA process?
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Leo Gu

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Thanks Ravi. Issue got resolved by removing option 82.
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Ravisekar, Rajamanickam, Alum

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Excellent..