Alcatel-Lucent 6850-48 参照ガイド

DHCP Relay Commands

OmniSwitch CLI Reference Guide

page 36-5

Configures a DHCP Relay service for the specified VLAN. This command is used when a per-VLAN only 
relay service is active on the switch. It does not apply when using a standard relay service.

ip helper address ip_address vlan vlan_id

ip helper no address ip_address vlan vlan_id

IP address (e.g. 21.0.0.10) of the DHCP server VLAN.

VLAN identification number (e.g. 3) of the DHCP server VLAN. 

If no VLAN identification number is entered, VLAN ID 0 is used by default.

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• Use the no form of this command to delete the DHCP server VLAN from the DHCP Relay. 

• Specifying multiple VLAN IDs and/or a range of VLAN IDs on the same command line is allowed. 

Use a hyphen to indicate a contiguous range and a space to separate multiple VLAN ID entries (e.g., 
10-15 500-510 850).

• The ip helper address vlan command does not work if the per-vlan only forwarding option is not 

active. Use the 

 command to enable this option.

• Configure DHCP Relay on switches where packets are routed between IP networks.

• The per-VLAN only relay service supports a maximum of 256 VLANs.

-> ip helper address 75.0.0.10 3

-> ip helper no address 31.0.0.20 4

-> ip helper address 198.206.15.2 250-255

-> ip helper address 10.11.4.1 550-555 1500 1601-1620

-> ip helper no address 198.206.15.2 1601-1620

Release 6.1; command was introduced.
Release 6.1.2; support added for entering a range and/or multiple entries of VLAN IDs.