Viewing Dhcp Client Bindings; Monitoring The Dhcp Process - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

Viewing DHCP Client Bindings

The ProCurve Secure Router stores a table of DHCP bindings. In this table,
you can view the IP addresses for all active DHCP clients served by the router.
This can be helpful for troubleshooting. For example, you can ping a work-
station to see if it can respond. Or you can zero-in on a host that is flooding a
network with messages.
To view the bindings for all DHCP clients supported by the router, enter:
ProCurve# show ip dhcp-server binding
The table displays:
IP Address—the committed IP address
Client ID—usually a MAC address
Lease Expiration—date and time the lease for the address expires
Client Name—the user-selected name on the computer or device
Figure 13-5 shows an example of the information that displays when you enter
the show ip dhcp-server binding command.
ProCurveSR7102dl# show ip dhcp-server binding
IP Address Client Id
172.16.1.4 01:00:50:04:91:ee:19
172.16.2.28 01:00:01:02:51:c9:f6
172.16.1.7 01:00:10:4b:a0:df:0a
Client's MAC address
Figure 13-5. Viewing DHCP Clients Supported by the Router

Monitoring the DHCP Process

When troubleshooting a router's DHCP functions, it is often helpful to track
the DHCP process. (To review this process, refer to "DHCP Request Process"
on page 13-3.)
You can view DHCP messages as they arrive on the interface by entering:
ProCurve# debug ip dhcp-server
Dynamic Host Configuration Protocol (DHCP)
Managing and Troubleshooting the DHCP Server
Lease Expiration
Aug 27 2004 3:04 PM
Aug 27 2004 3:26 PM
Aug 27 2004 3:28 PM
User-selected name on the
computer or device
Client Name
HunterPC
ShanePC
TreyPC
13-19