Ip Helper Address Vlan - Alcatel-Lucent OmniSwitch 6850-48 Cli Reference Manual

DHCP Relay Commands

ip helper address vlan

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
Syntax Definitions
ip_address
vlan_id
Defaults
If no VLAN identification number is entered, VLAN ID 0 is used by default.
Platforms Supported
OmniSwitch 6400, 6850,6850E, 6855, 9000E
Usage Guidelines
•
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 ip helper per-vlan only
•
Configure DHCP Relay on switches where packets are routed between IP networks.
•
The per-VLAN only relay service supports a maximum of 256 VLANs.
Examples
-> 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 History
Release 6.1; command was introduced.
Release 6.1.2; support added for entering a range and/or multiple entries of VLAN IDs.
OmniSwitch CLI Reference Guide
IP address (e.g. 21.0.0.10) of the DHCP server VLAN.
VLAN identification number (e.g. 3) of the DHCP server VLAN.
command to enable this option.
June 2012 page 20-5