Cisco Systems 78-11741-02 Wireless Office Headset User Manual


 
Configuring DHCP
DHCP Configuration Task List
IPC-72
Cisco IOS IP Configuration Guide
Manual bindings are IP addresses that have been manually mapped to the MAC addresses of hosts that
are found in the DHCP database. Manual bindings are stored in NVRAM on the DHCP Server. Manual
bindings are just special address pools. There is no limit on the number of manual bindings but you can
only configure one manual binding per host pool.
Automatic bindings are IP addresses that have been automatically mapped to the MAC addresses of hosts
that are found in the DHCP database. Automatic bindings are stored on a remote host called a database
agent. The bindings are saved as text records for easy maintenance.
To configure a manual binding, first create a host pool, then specify the IP address of the client and
hardware address or client identifier. The hardware address is the MAC address. The client identifier,
which is required for Microsoft clients (instead of hardware addresses), is formed by concatenating the
media type and the MAC address of the client. Refer to the “Address Resolution Protocol Parameters”
section of RFC 1700, Assigned Numbers, for a list of media type codes.
To configure manual bindings, use the following commands beginning in global configuration mode:
Command Purpose
Step 1
Router(config)# ip dhcp pool name
Creates a name for the a DHCP Server address pool and places you
in DHCP pool configuration mode—identified by the
(dhcp-config)# prompt.
Step 2
Router(dhcp-config)# host address
[mask | /prefix-length]
Specifies the IP address and subnet mask of the client.
The prefix length specifies the number of bits that comprise the
address prefix. The prefix is an alternative way of specifying the
network mask of the client. The prefix length must be preceded by
a forward slash (/).
Step 3
Router(dhcp-config)# hardware-address
hardware-address type
or
Router(dhcp-config)# client-identifier
unique-identifier
Specifies a hardware address for the client.
The type value:
Indicates the protocol of the hardware platform. Strings and
values are acceptable. The string options are:
ethernet
ieee802
The value options are:
1 10Mb Ethernet
6 IEEE 802
If no type is specified, the default protocol is Ethernet.
or
Specifies the distinct identification of the client in dotted
hexadecimal notation, for example, 01b7.0813.8811.66, where 01
represents the Ethernet media type.
Step 4
Router(dhcp-config)# client-name name
(Optional) Specifies the name of the client using any standard
ASCII character. The client name should not include the domain
name. For example, the name mars should not be specified as
mars.cisco.com.