HP ProCurve 7000dl Series Basic Management And Configuration Manual page 398

ADSL WAN Connections
ADSL Modules for the ProCurve Secure Router
7-24
Overriding Settings Received from the DHCP Server. If the DHCP
server is configured to provide a default route, a domain name, or the IP
address of a domain name system (DNS) server, the DHCP client for the ATM
subinterface will accept and use these settings. If you do not want to use one
or more of these settings, enter the appropriate options when you enable the
DHCP client:
Syntax: ip address dhcp [hostname <word> | no-default-route | no-domain-name |
no-nameservers]
For example, if you do not want the DHCP client to use the default gateway
and DNS name server addresses that it receives from the DHCP server, enter:
ProCurve(config-atm 1.1)# ip address dhcp no-default-route no-nameservers
Attaching a Network Monitoring Track to the DHCP Interface. As a
part of the network monitoring feature, you can attach a network monitoring
track to the DHCP client, in order to monitor the default route received from
a DHCP server. A track uses probes to test routes and servers, with the goal
of either removing failed routes or logging poor performance.
You can use the track option with the ip address dhcp command to configure
the ProCurve Secure Router to add the default route as a monitored route.
You can combine the track option with any of the other options for the ip
address dhcp command (except no-default-route—the router cannot mon-
itor a route that the interface does not accept).
For example, to attach the track named DHCPDefault, enter:
ProCurve(config-atm 1.1)# ip address dhcp track DHCPDefault
Before entering the command, you should create the track named
DHCPDefault. Also, you should create a probe to test the route. For example,
the probe could test connectivity to the default gateway listed in the DHCP
default route. If the probe fails to reach the gateway, the track determines that
the default route has failed and removes it.
For more information about network monitoring and configuring tracks and
probes, see the Advanced Management and Configuration Guide, Chapter
9: Network Monitoring.