DHCP Relay Commands
page 32-8 OmniSwitch 6250 CLI Reference Guide November 2009
ip helper per-vlan only
Sets the DHCP Relay forwarding option to process only DHCP packets received from a specific, identi-
fied VLAN. This option allows each VLAN to have its own relay.
ip helper per-vlan only
Syntax Definitions
N/A
Defaults
By default, the UDP forwarding option is set to standard.
Platforms Supported
OmniSwitch 6250
Usage Guidelines
• When the forwarding option is set to per-vlan only, the standard (global) DHCP relay service is not
available. These two types of services are mutually exclusive.
• Using the per-vlan only forwarding option requires you to specify a DHCP server IP address for each
VLAN that will provide a relay service. The ip helper address vlan command performs this function
and at the same time enables relay for the specified VLAN.
Examples
-> ip helper per-vlan only
Release History
Release 6.6.1; command was introduced.
Related Commands
ip helper address vlan Configures a DHCP Relay service for the specified VLAN.
ip helper standard Sets DHCP Relay forwarding option to standard. All DHCP packets are
processed.
show ip helper Displays current DHCP Relay configuration information.
show ip helper stats Displays DHCP Relay statistics, including the number of client packets
received and transmitted to the DHCP server and packets dropped due to
forward delay time and maximum hops violations.
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