Configuring Broadcast Settings; Applying Dhcp/Bootp Relay; Purpose; Commands - Enterasys Matrix DFE-Gold Series Configuration Manual

ip directed-broadcast

Configuring Broadcast Settings

Applying 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 "ip forward‐protocol" on page 16‐20,
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 "ip helper‐address" on page 16‐21.
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.

Purpose

To configure IP broadcast settings.

Commands

For information about...
ip directed-broadcast
ip forward-protocol
ip helper-address
ip directed-broadcast
Use this command to enable or disable IP directed broadcasts on an interface.
Syntax
ip directed-broadcast
no ip directed-broadcast
Parameters
None.
Defaults
None.
Mode
Router command, Interface configuration: Matrix>Router(config‐if(Vlan 1))#
Enterasys Matrix DFE-Gold Series Configuration Guide 16-19
Configuring Broadcast Settings
Refer to page...
16-19
16-20
16-21