Enterasys Networks Security Router X-PeditionTM - Manual (Page 386)

DHCP Server Configuration Examples
15-12 Configuring DHCP XSR User’s Guide
The domain name for this host is specified as indusriver.com (this will override enterasys.com
specified for this pool, and ent.com specified for the class).
XSR(config)#ip local pool dpool 1.1.1.0/24
XSR(config)#ip dhcp pool dpool
XSR(config-dhcp-pool)#domain-name enterasys.com
XSR(config-dhcp-pool)#client-class engineering
XSR(config-dhcp-class)#domain-name ent.com
XSR(config-dhcp-class)#hardware-address 00f0.1211.22a1
XSR(config-dhcp-host)#host 1.1.1.20 255.255.255.0
XSR(config-dhcp-host)#domain-name indusriver.com
BOOTP Client Support Example
In the following example, the XSR is configured to support a BOOTP client to download an image
file from a TFTP server. Configured within the DHCP pool BOOTPdownload, the client is assigned
a manual binding of host IP and hardware addresses (or optionally, its client-id), the TFTP server’s IP
address, and the name of the file to be downloaded, acme.hex. Also, a static ARP entry is set.
XSR(config)#ip dhcp pool BOOTPdownload
XSR(config-dhcp-pool)#host 192.168.1.33 255.255.255.0
XSR(config-dhcp-pool)#next-server 192.168.1.234
XSR(config-dhcp-pool)#bootfile acme.hex
XSR(config-dhcp-pool)#hardware-address 0000.1d11.e829
XSR(config)#arp 192.168.1.33 0000.1D11.E829
When the MAC address 0000.1d11.e829 (BOOTP client) transmits a BOOTP request, the DHCP
server will respond with the IP address 192.168.1.33, the boot file name
acme.hex and the next-
server IP address 192.168.1.234.
DHCP Option Examples
The following sample DHCP option configurations illustrate the three types of option values
prompted for by the CLI: IP address, ASCII and hex. See the XSR CLI Reference Guide for more.
The following example configures DHCP option 3, which lists the IP addresses of four default
routers on the DHCP client's subnet in descending order of preference. This setting can also be
configured by the DHCP
default-router command. Be sure to first exclude these addresses
from the IP local pool to prevent them from being allocated by the DHCP server.
XSR(config-dhcp-pool)#option 3 ip 192.168.57.90 192.168.57.26 192.168.57.54 192.168.57.78
The following example configures DHCP option 12, which specifies the host name of a client
which may or may not be qualified with the local domain name. The option parameter is
expressed in ASCII text but can also be configured by the DHCP
client-name command. The
name should not include the domain name.
XSR(config-dhcp-host)#option 12 ascii jonah
The following example configures DHCP option 29, which specifies that the client will perform
subnet mask discovery using ICMP.
XSR(config-dhcp-host)#option 29 hex 01