Strange issue with DHCP Clients

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we have setup 2 dhcp servers, 1 in local site , 1 remote failover. have iphelper statement on switch if local dhcp server unavailable clients address remote dhcp server. issue having 90% of clients getting addresses remote dhcp server. have ideas why happening? thing know failover working, not want clients getting addresses remote server unless server down.

thanks,

gavin

hi gavin,

>>we have iphelper statement on switch if local dhcp server unavailable

please disable iphelper statement , try renew client's ip again.

>> the issue having 90% of clients getting addresses remote dhcp server.

other clients obtain ip address local dhcp server?

if yes, please check if iphelper configuration correct , contact switch provider effect support.

you catch packet analyze issue after you disabled iphelper, please check if client has sent request or dhcp server has received broadcast packet.

best regards

john

please remember mark replies answers if help.
if have feedback technet subscriber support, contact tnmff@microsoft.com.



Windows Server  >  IPAM, DHCP, DNS



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