Use show ip dhcp binding in Cisco IOS EXEC mode to verify active IP leases assigned by the router’s DHCP server. The output lists each leased address, client identifier or hardware address, lease expiration, and assignment type. section 4.1.2 section 4.4
R1# show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address Client-ID/ Lease expiration Type
Hardware address/
User name
10.0.0.6 0152.5400.172f.da Sep 06 2023 01:50 PM Automatic #1
10.0.0.7 0152.5400.1792.08 Sep 06 2023 01:51 PM Automatic #2
#1 PC1 leased 10.0.0.6 from R1.
#2 PC2 leased 10.0.0.7 from R1.
The sample table confirms that PC1 received 10.0.0.6 and PC2 received 10.0.0.7 from R1; both leases are automatic. section 4.1.2
Use the displayed bindings to:
- Confirm that expected clients successfully obtained addresses from the correct DHCP server. section 4.1.2
- Interpret Client-ID values carefully: Ethernet clients may show a 01 prefix followed by the interface MAC address. section 4.1.2
- Clear stale bindings with clear ip dhcp binding * or clear ip dhcp binding ip-address when addresses must be released or testing requires cleanup. section 4.1.2 section 4.4
