Ip Helper Commands; Clear Ip Helper Statistics; Ip Helper-Address (Global Config) - NETGEAR ProSafe GSM7224P User Manual

IP Helper Commands

This section describes the commands to configure a DHCP relay agent with multiple DHCP
server addresses per routing interface, and to use different server addresses for client
packets arriving on different interfaces on the relay agent.

clear ip helper statistics

Use this command to reset the statistics displayed in the
command to zero.
Format
clear ip helper statistics
Mode
Privileged EXEC

ip helper-address (Global Config)

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.
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 and
use
"255.255.255.255"
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.
Default
Disabled
Format
ip helper-address <ip-address>
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
Global Config
no ip helper-address (Global Config)
Use this command to remove the IP address from the previously configured list. The no
command without an <
on that interface.
Format
no ip helper-address {<ip-address>}
{<1-65535>|dhcp|domain|isakmp|mobile-ip|nameserver|
netbios-dgm|netbios-ns|ntp|pim-auto-rip|rip|tacacs|tftp|time}
Mode
GlobalConfig
ProSafe Managed Switch
to broadcast the UDP packets to all hosts on the target subnet.
> argument removes the entire list of helper addresses
ip-address
Routing Commands
265
show ip helper statistics