Configuring L3 Relay (Ip Helper) Settings - Dell M6220 User Configuration Manual

Configuring L3 Relay (IP Helper) Settings

Beginning in Privileged EXEC mode, use the following commands to
configure switch and interface L3 DHCP relay and IP helper settings.
Command
configure
ip helper enable
ip helper-address
address dest-udp-port
[
dhcp | domain | isakmp
| mobile-ip |
nameserver | netbios-
dgm | netbios-ns | ntp |
pim-auto-rp | rip |
tacacs | tftp | time]
vlan-id
interface vlan
Purpose
Enter global configuration mode.
Use this command to enable the IP helper feature. It is
enabled by default.
server-
Configure the relay of certain UDP broadcast packets
| received on any interface. Specify the one of the protocols
defined in the command or the UDP port number.
server-address
•
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
•
to 65535.
Enter interface configuration mode for the specified
VLAN routing interface.
You can also specify a range of VLAN routing interfaces
with the interface range vlan command, for example,
interface range vlan 10,20,30 configures VLAN interfaces
10, 20, and 30.
NOTE:
All VLANs must be configured as VLAN routing
interfaces.
— The IPv4 unicast or directed broadcast
— A destination UDP port number from 0
Configuring L2 and L3 Relay Features
951