Udp Relay Configuration Commands; Ip Helper-Address (Global Config Mode) - NETGEAR FSM7328PS - ProSafe 24 Port 10/100 L3 Managed Stackable Switch Reference Manual

Command Line Interface Reference for the ProSafe 7300S Series Layer-3 Stackable Switches,

19.1 UDP Relay Configuration Commands

This section describes configuration commands for setting up UDP relay service.

19.1.1 ip helper-address (global config mode)

Use the Global Configuration ip helper-address command to have the switch forward
User Datagram Protocol (UDP) broadcasts received on an interface. To disable the
forwarding of broadcast packets to specific addresses, use the no form of this command.
The ip helper-address command forwards specific UDP broadcast from one interface to
another. You can define many helper addresses but the total number of address-port pairs
is limited to 128 for the whole device. The setting of a helper address for a specific
interface has precedence over a setting of a helper address for all interfaces. You cannot
enable forwarding of BOOTP/DHCP packets (ports 67,68) with this command. If you
want to relay BOOTP/DHCP packets, use the DHCP relay commands.
Format
Parameters
Mode
Default
19-2
{intf-address | all} ip-address [udp-
ip helper-address
port-list]
no ip helper-address
intf-address IP address of a routing interface.
all Indicates that this UDP port to address mapping should be
used for all IPv4 routing interfaces. The exception is if a par-
ticular routing interface has its own mapping; then that map-
ping takes precedence.
Ip-address Destination broadcast or host address to be used
when forwarding UDP broadcasts. You can specify 0.0.0.0 to
indicate not to forward the UDP packet to any host
"255.255.255.255" to broadcast the UDP packets to all hosts
on the target subnet.
udp-port-list The broadcast packet destination UDP port
number to forward. If not specified, packets for the default
services are forwarded to the helper address. Valid range, 0-
65535.
Global Config
Disabled
v3.0, January 2008
{intf-address | all} ip-address
UDP Relay Commands
and use