
IP Configuration Command Set
Configuring Broadcast Settings
12-32
Matrix DFE-Platinum and Diamond Series Configuration Guide
Command Defaults
If
port
is not specified, default forwarding services will be performed as listed
above.
Example
This example shows how to enable forwarding of Domain Naming System UDP datagrams (port
53):
About DHCP/BOOTP Relay
DHCP/BOOTP relay functionality is applied with the help of IP broadcast forwarding. A typical
situation occurs when a host requests an IP address with no DHCP server located on that segment.
A routing module can forward the DHCP request to a server located on another network if:
•
IP forward-protocol is enabled for UDP as described in
Section 12.2.5.2
, and
•
the address of the DHCP server is configured as a helper address on the receiving interface of
the routing module forwarding the request, as described in
Section 12.2.5.3
.
The DHCP/BOOTP relay function will detect the DHCP request and make the necessary changes
to the header, replacing the destination address with the address of the server, and the source with
its own address, and send it to the server. When the response comes from the server, the
DHCP/BOOTP relay function sends it to the host.
Matrix>Router(config)#
ip forward-protocol udp 53