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Cisco Bug: CSCvs56690 - "show ip dhcp binding" on dhcp server shows infine lease with Manual port binding

Last Modified

Jan 22, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

cEdge-16.10.1 cedge-16.11.1

Description (partial)

Symptom:
DHCP servers running on Cisco devices show infinite leasing for all manually bound IPs.
This is true for default lease time configuration and manually set lease time configuration.

Remote device get the correct lease which means correct value is being sent through the DHCP packets.


cat9ktest#show run | sec dhcp
ip dhcp use subscriber-id client-id
ip dhcp subscriber-id interface-name
ip dhcp excluded-address 20.20.20.1
ip dhcp ping packets 1
ip dhcp pool 0
 network 20.20.20.0 255.255.255.0
 lease 0 0 4
   address 20.20.20.2 client-id "Gi2/0/1" ascii
errdisable recovery cause dhcp-rate-limit
class-map match-any system-cpp-police-dhcp-snooping
  description DHCP snooping


cat9ktest#show ip dhcp binding
Bindings from all pools not associated with VRF:
IP address      Client-ID/ 		Lease expiration 	Type       State      Interface
		Hardware address/
		User name
20.20.20.2      0047.6932.2f30.2f31     Infinite                Manual     Selecting  Unknown

Conditions:
All IOS, IOS-XE switches running as DHCP servers with manual DHCP binding configuration.
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