Command
Show DHCP Lease
Use
This command shows DHCP lease information for interfaces that are configured with DHCP on the router.
Syntax
Router#show dhcp lease
Example
In the below example we configure R1’s Fa0/0 to use DHCP.
R1(config)#int fa0/0 R1(config-if)#ip address dhcp R1(config-if)# *Mar 1 01:39:29.295: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 10.1.1.2 (FastEthernet0/0) is down: interface down R1(config-if)# *Mar 1 01:39:40.455: %DHCP-6-ADDRESS_ASSIGN: Interface FastEthernet0/0 assigned DHCP address 10.1.1.1, mask 255.255.255.0, hostname R1 R1(config-if)# *Mar 1 01:39:42.143: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 10.1.1.2 (FastEthernet0/0) is up: new adjacency
Then we verify the lease information with show dhcp lease.
R1(config)#do show dhcp lease Temp IP addr: 10.1.1.1 for peer on Interface: FastEthernet0/0 Temp sub net mask: 255.255.255.0 DHCP Lease server: 10.1.1.2, state: 3 Bound DHCP transaction id: 937 Lease: 86400 secs, Renewal: 43200 secs, Rebind: 75600 secs Temp default-gateway addr: 10.10.2.1 Next timer fires after: 11:59:38 Retry count: 0 Client-ID: cisco-cc01.0750.0000-Fa0/0 Client-ID hex dump: 636973636F2D636330312E303735302E 303030302D4661302F30 Hostname: R1