Ip Helper-Address (Global Configuration) - Dell PowerConnect 8024 Cli Reference Manual

ip helper-address (global configuration)

Use the ip helper-address (global configuration) command to configure the relay of certain
UDP broadcast packets received on any interface. To delete an IP helper entry, use the no form
of this command.
Syntax
ip helper-address
nameserver | netbios-dgm | netbios-ns | ntp | pim-auto-rp | rip | tacacs | tftp | time ]
no ip helper-address [
nameserver | netbios-dgm | netbios-ns | ntp | pim-auto-rp | rip | tacacs | tftp | time ]
server-address — The IPv4 unicast or directed broadcast address to which relayed UDP
•
broadcast packets are sent. The server address cannot be an IP address configured on any
interface of the local router.
dest-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: 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), and time (port 37). Other
ports must be specified by number.
Default Configuration
No helper addresses are configured.
Command Mode
Global Configuration mode.
User Guidelines
This command can be invoked multiple times, either to specify multiple server addresses for a
given port number or to specify multiple port numbers handled by a specific server.
The command no ip helper-address with no arguments clears all global IP helper addresses.
Example
To relay DHCP packets received on any interface to two DHCP
servers, 10.1.1.1 and 10.1.2.1, use the following commands:
console#config
606
IP Helper Commands
server-address dest-udp-port
[
server-address dest-udp-port
] [
| dhcp | domain | isakmp | mobile-ip |
| dhcp | domain | isakmp | mobile-ip |