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Cisco ASDM User Guide
OL-16647-01
Chapter 41 Monitoring Interfaces
DHCP
DHCP Server Table
The DHCP Server Table lists the IP addresses assigned to DHCP clients.
Fields
• IP Address—Shows the IP address assigned to the client.
• Client-ID—Shows the client MAC address or ID.
• Lease Expiration—Shows the date that the DHCP lease expires. The lease indicates how long the
client can use the assigned IP address. Remaining time is also specified in the number of seconds
and is based on the timestamp in the Last Updated display-only field.
• Number of Active Leases—Shows the total number of DHCP leases.
• Refresh—Refreshes the information from the security appliance.
• Last Updated—Shows when the data in the table was last updated.
Modes
The following table shows the modes in which this feature is available:
DHCP Client Lease Information
If you obtain the security appliance interface IP address from a DHCP server, the DHCP Client Lease
Information panel shows information about the DHCP lease.
Fields
• Select an interface—Lists the security appliance interfaces. Choose the interface for which you want
to view the DHCP lease. If an interface has multiple DHCP leases, then choose the interface and
IP address pair you want to view.
• Attribute and Value—Lists the attributes and values of the interface DHCP lease.
–
Temp I P add r—Display only. The IP address assigned to the interface.
–
Temp sub net mask—Display only. The subnet mask assigned to the interface.
–
DHCP lease server—Display only. The DHCP server address.
–
state—Display only. The state of the DHCP lease, as follows:
Initial—The initialization state, where the security appliance begins the process of acquiring a
lease. This state is also shown when a lease ends or when a lease negotiation fails.
Selecting—The security appliance is waiting to receive DHCPOFFER messages from one or
more DHCP servers, so it can choose one.
Requesting—The security appliance is waiting to hear back from the server to which it sent its
request.
Purging—The security appliance is removing the lease because of an error.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
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