DHCP servers authorized to AD with IP address from wrong NIC

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hello,

we have 2 windows server 2012 r2 servers dhcp server role installed: dhcp1 , dhcp2. both servers hyper-v virtual machines. servers have on 400 scopes , scopes (except one) configured load balance failover mode. both servers have 2 network interface cards installed: named production , backup. detailed network information below. dhcp server service on both servers have been binded production nic.

dhcp helper addresses on our routers point ip addresses configured production nics.

both dhcp servers authorized ad via server manager during role installation. no errors detected during phase. unexpected server manager wizard authorized both servers ad using ip addresses of backup nics.

dhcp1

ethernet adapter production

ipv4 address 192.168.1.2

subnet mask 255.255.255.0

default gateway 192.168.1.1

ethernet adapter backup

ipv4 address 10.0.0.1               

subnet mask 255.255.255.0

default gateway <none>

dhcp2

ethernet adapter production

ipv4 address 192.168.1.3

subnet mask 255.255.255.0

default gateway 192.168.1.1

ethernet adapter backup

ipv4 address 10.0.0.2

subnet mask 255.255.255.0

default gateway <none>

problem

today discovered both dhcp servers authorized active directory using ip addresses  configured backup nics (10.0.0.1 , 10.0.0.2). instead, ip address configured production nic should used. verified wrong ip being used ad authorization dhcp mmc , “netsh dhcp show server” command.

what best approach change both dhcp servers authorize ad ip address of production nics instead of backup nic?

thank already.

hi

 first check authorized server list with "netsh dhcp show server"

then run "netsh dhcp delete server dhcpsrv1.example.microsoft.com 10.0.0.1" (also run 10.0.0.2)for unauthorized .

 fİnaly run "netsh dhcp add server dhcpsrv1.example.microsoft.com 192.168.1.2" (also run 192.168.1.3) authorized.

this posting provided no warranties or guarantees,and confers no rights. best regards burak uğur



Windows Server  >  IPAM, DHCP, DNS



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