User Manual

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NETGEAR M4500 Series Switches CLI Command Reference Manual 712
Default None
Mode Global Config
6.5.2.2. ip helper-address (Interface Config)
Use this command to configure the relay of certain UDP broadcast packets received on a specific interface or
range of interfaces. This command can be invoked multiple times on a routing interface, either to specify
multiple server addresses for a given port number or to specify multiple port numbers handled by a specific
server.
To delete the address, use the no form of this command.
Format ip helper-address <ipaddr> [ <udp-port> | dhcp | domain | isakmp | mobile-ip | nameserver |
netbios-dgm | netbios-ns | ntp | pim-auto-rp | rip | tacacs | tftp | time ]
no ip helper-address [<ipaddr> [ <udp-port> | dhcp | domain | isakmp | mobile-ip | nameserver |
netbios-dgm | netbios-ns | ntp | pim-auto-rp | rip | tacacs | tftp | time ]]
port-name
The destination UDP port may be optionally specified by its name. Whether
a port is specified by its number or its name has no effect on behavior. The
names recognized are as follows:
dhcp (port 67)
domain (port 53)
isakmp (port 500)
mobile-ip (port 434)
nameserver (port 42)
netbios-dgm (port 138)
netbios-ns (port 137)
ntp (port 123)
pim-auto-rp (port 496)
rip (port 520)
tacacs (port 49)
tftp (port 69)
time (port 37)
Other ports must be specified by number.
Parameter
Description
ipaddr
The IPv4 unicast or directed broadcast address to which relayed UDP broadcast
packets are sent. The server address cannot be in a subnet on the interface where
the relay entry is configured, and cannot be an IP address configured on any
interface of the local router.
udp-port
A destination UDP port number from 0 to 65535.
port-name
The destination UDP port may be optionally specified by its name. Whether a
port is specified by its number or its name has no effect on behavior. The names
recognized are as follows: