Technical Documentation
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Monitoring DHCP Bindings (Displaying IP Address-to-MAC Address Bindings)
Purpose
Display the mapping between the assigned IP address and the MAC address of the subscriber’s computer.
 | Note: This command is deprecated and might be removed completely in a future release. The function provided by this command has been replaced by the show dhcp binding command. |
Action
To display the DHCP IP address to MAC address bindings:
host1#show ip dhcp-external binding
Dhcp External Bindings
----------------------
Hardware Giaddr IpAddress Server Lease Expire Interface
-------------- -------- --------- -------- ----- ------ ------------
7000.0001.9365 91.3.0.1 91.3.0.2 10.1.2.1 3600 3175 ATM3/1.100.1Meaning
Table 1 lists the show ip dhcp-external binding command output fields
Table 1: show ip dhcp-external binding Output Fields
Field Name | Field Description |
|---|---|
Hardware | MAC address of subscriber’s computer |
Giaddr | Gateway IP address (giaddr) in the DHCP packet received from a client |
IpAddress | Subscriber client’s IP address |
Server | DHCP server’s address |
Lease | Time for which the IP address is available, in seconds |
Expire | Time remaining on the current lease, in seconds |
Interface | Interface that is associated with the subscriber’s computer |
