Dell POWEREDGE M1000E - Manual (Page 938)

938 Configuring L2 and L3 Relay Features
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.
dhcp l2relay remote-id
remoteId vlan vlan-range
Enable setting the DHCP Option 82 Remote ID for a
VLAN. When enabled, the supplied string is used for the
Remote ID in DHCP Option 82.
The
remoteId variable is a string to be used as the remote
ID in the Option 82 (Range: 1 - 128 characters).
exit Exit to Privileged EXEC mode.
show dhcp l2relay all View L2 DHCP relay settings for all interfaces.
show dhcp l2relay vlan
vlan-range
View L2 DHCP relay settings for the specified VLAN
show dhcp l2relay stats
interface [all | interface]
View the number of DHCP packets processed and relayed
by the L2 relay agent. To reset the statistics to 0, use the
clear dhcp l2relay statistics interface [all | interface]
command.
Command Purpose
configure Enter global configuration mode.
ip helper enable Use this command to enable the IP helper feature. It is
enabled by default.
ip helper-address server-
address [dest-udp-port |
dhcp | domain | isakmp
| mobile-ip |
nameserver | netbios-
dgm | netbios-ns | ntp |
pim-auto-rp | rip |
tacacs | tftp | time]
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 — 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.
Command Purpose