HP ProCurve Series 6120 Blade Switches Multicast and Routing Guide

IP Routing Features
Configuring DHCP Relay
DHCP Option 12
This feature allows you to include the hostname in the DHCP packet sent to
the DHCP server. This is disabled by default. The command must be executed
from the global configuration level.
Syntax:
[no] dhcp host-name-option
Sends the hostname option with DHCP packets. Use the no form
of the command to not include the hostname in the packet.
The maximum size of the hostname is 32 characters.
Default: Disabled
ProCurve(config)# dhcp host-name-option
Figure 3-20. Example of the DHCP Option 12 Command
SNMP Support
A MIB object supports enabling and disabling the DHCP Option 12 feature. It
is added in the hpicfDhcpclient.mib. The hostname is retrieved from the MIB
variable SYSNAME. Validity checks on the name include:
■ The name starts with a letter, ends with a letter or a digit, and can have
letters, hyphens, or digits in between the first and last characters.
■ The maximum size supported for a hostname is 30 characters. If
SYSNAME is more than 30 characters, then DHCP Option 12 will not be
included in the packet.
■ The minimum number of characters supported for a hostname is one
character. If the SYSNAME in the MIB is null, then DHCP Option 12 will
not be included in the packet.
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