Hello All:

Is it possible to configure two DHCP server (dhcp1 192.168.5.0/24 and dhcp2
192.168.6.0/24) with one interface ether2 (LAN). If so pl suggest me how to possible.

Best Regards,

It is not necessary, as one one physical network you should have only one subnet.

if you run out of IPs in /24 you should use /23 instead. and have one DHCP server for whole /23 network

It's possible using Vlans.

Regards.