Ip Helper-Address (Interface Configuration) - Dell Networking 2024 Reference Manual

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
console(config)#ip helper-address 10.1.1.1 dhcp
console(config)#ip helper-address 10.1.2.1 dhcp
To relay UDP packets received on any interface for all default ports (see
Table 47-1) to the server at 20.1.1.1, use the following commands:
console#config
console(config)#ip helper-address 20.1.1.1

ip helper-address (interface configuration)

Use the ip helper-address (interface configuration) command to configure
the relay of certain UDP broadcast packets received on a specific interface. To
delete a relay entry on an interface, use the no form of this command.
Syntax
ip helper-address {server-address | discard} [dest-udp-port | dhcp | domain
| isakmp | mobile ip | nameserver | netbios-dgm | netbios-ns | ntp | pim-
auto-rp | rip | tacacs | tftp | time]
no ip helper-address [
domain | isakmp | mobile-ip | 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.
1038
IP Helper/DHCP Relay Commands
server-address
| discard] [
dest-udp-port
| dhcp |