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Aussiewan_19227's avatar
Aussiewan_19227
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Mar 16, 2015

F5 DHCP Relay in multi-hop configuration issue

Hi all,   We have 2x F5 BIG-IP 4000 units with APM Base, GTM-DNS and LTM Base licenses, running version 11.6.0 (build 3.0.412). We are having trouble with a multi-hop DHCP relay config where the F...
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J-H_Johansen's avatar
J-H_Johansen
Icon for Nimbostratus rankNimbostratus
Feb 11, 2016

I'm having issues with DHCP in forward mode. Client and gateway is on one VLAN while the BigIP is on a second VLAN and DHCP servers is on a third.

 

When I configure the VS with DHCP profile relay it will pass on the packets to the DHCP server but change the gateway field in the UDP-packets to the BigIPs IP-address. When I set it to forward mode it stops forwarding the packets. I thought that forward mode would do the same as relay except change the gateway address in the packet, but I'm not all that well versed in things DHCP.

 

I've talked to support but they said they'd escalate the issue.