Alcatel-Lucent OmniSwitch 6250 - Ip Helper Address Vlan

DHCP Relay Commands
OmniSwitch 6250 CLI Reference Guide November 2009 page 32-5
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 IP address (e.g. 21.0.0.10) of the DHCP server VLAN.
vlan_id VLAN identification number (e.g. 3) of the DHCP server VLAN.
Defaults
If no VLAN identification number is entered, VLAN ID 0 is used by default.
Platforms Supported
OmniSwitch 6250
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 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.
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 6.6.1; command was introduced.