How to forward DHCP traffic through a Cisco switch?

Cisco
After moving your DHCP server and it doesn't receive client requests but everything is "OK" with the server, then that could cause a problem in your corporate environment:)       [wp_ad_camp_1] In a nutshell, the client sends a DHCPMESSAGE on its local subnet (UDP port 67) but if the DHCP server is on a different subnet then the client uses a BROADCAST address (255.255.255.255) and that represents a problem on the switch. An overcome of this problem is the "ip helper-address" which we use on the client vlan interface. Here is a simple topology:               Here is the configuration needed: interface vlan2 ip address 172.16.0.1 255.255.255.0 interface vlan3 ip address 172.20.0.1 255.255.255.0 ip helper-address 172.16.0.10 --> DHCP server IP address   Now the…
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