topic Re: Why some user get different Lease Expiration from the same dhcp in Wireless

Why some user get different Lease Expiration from the same dhcp

Leftz — Fri, 22 Apr 2022 16:33:01 GMT

Hi, C9800 wlc use internal dhcp for each clients. All clients use the same dhcp server. Why some clients get Infinite Lease Expiration and other get finite lease expiration? Please see the below screenshot. Thank you

Re: Why some user get different Lease Expiration from the same dhcp

balaji.bandi — Fri, 22 Apr 2022 16:40:16 GMT

This looks for me is the DHCP Server before setup and infinity, and recently changed to expiry time for me.

Once the infinity user disconnect and connect again new expiry time will apply

This is my assumption based on the information provided on this thread.

Re: Why some user get different Lease Expiration from the same dhcp

Flavio Miranda — Fri, 22 Apr 2022 17:05:14 GMT

Lease time can be defined per DHCP scope. So, you may be on the same server but in different scope.

Re: Why some user get different Lease Expiration from the same dhcp

Leftz — Fri, 22 Apr 2022 19:04:54 GMT

Thank you all for your reply. You are right, balaji. The lease has been changed by someone.

Re: Why some user get different Lease Expiration from the same dhcp

Rich R — Sat, 23 Apr 2022 13:02:29 GMT

Also to be aware that if you allow bootp clients then they will get an "infinite" lease so you might want to configure:

ip dhcp bootp ignore
no ip bootp server