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Command Reference
18
Release 12.0(1)T
client-identifier
To specify a Microsoft Dynamic Host Configuration Protocol (DHCP) client’s unique identifier
(in dotted-hexadecimal notation), use the client-identifier DHCP pool configuration command. It is
valid for manual bindings only. Use the no form of this command to delete the client identifier.
client-identifier unique-identifier
no client-identifier
Syntax Description
Defaults
None
Command Modes
DHCP pool configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 12.0(1)T.
Microsoft DHCP clients require client identifiers instead of hardware addresses. The client identifier
is formed by concatenating the media type and the MAC address. For example, the Microsoft client
identifier for Ethernet address b708.1388.f166 is 01b7.0813.88f1.66, where 01 represents the
Ethernet media type. For a list of media type codes, refer to the “Address Resolution Protocol
Parameters” section of RFC 1700, Assigned Numbers.
Examples
The following example specifies the client identifier for Mac address b7.0813.8811.66 in
dotted-hexadecimal notation:
client-identifier 01b7.0813.8811.66
Related Commands
hardware-address
host
ip dhcp pool
unique-identifier The distinct identification of the client in dotted-hexadecimal notation,
for example, 01b7.0813.8811.66.