Dhcp Relay Configuration Task List - Edge-Core ES4626 User Manual

4. On receiving DHCPREPLY, the DHCP server responds with a DHCPACK packet
via DHCP relay to the DHCP client.
DHCP relay can not only send DHCP broadcasting packets to the specified DHCP
servers, but can also send other specified UDP broadcast packet to specified servers.

11.3.1 DHCP Relay Configuration Task List

1. Enable DHCP relay.
2. Configure DHCP relay to forward DHCP broadcast packet.
3. Configure DHCP relay to forward other UDP broadcast packet.
4. Disable DHCP relay from forwarding DHCP broadcast packet.
1. Enable DHCP relay.
DHCP server and DHCP relay is enabled as the DHCP service is enabled..
2. Configure DHCP relay to forward DHCP broadcast packet.
Command
Global Mode
ip forward-protocol udp <port>
no ip forward-protocol
<port>
Interface Mode
ip helper-address <ipaddress>
no ip helper-address <ipaddress>
3. Configure DHCP relay to forward other UDP broadcast packet.
Command
Global Mode
ip forward-protocol udp <port>
no ip forward-protocol
<port>
ip helper-address <ipaddress>
no ip helper-address <ipaddress>
4. Disable DHCP relay from forwarding DHCP broadcast packet.
Command
Global Mode
Explanation
The UDP port 67 is used for DHCP broadcast
udp
packet forwarding.
Set the destination IP address for DHCP relay
forwarding;
<ipaddress>" command cancels the setting.
Explanation
Specify the DHCP relay forwarding protocol
by setting
udp
forward-protocol
cancels the setting.
Set the destination IP address for DHCP relay
forwarding;
<ipaddress>" command cancels the setting.
Explanation
338
the "no ip helper-address
UDP port; the
udp <port>"
the "no ip helper-address
"no ip
command