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RE: DHCP Puzzler posted 03/11/2004
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Just a guess, but could they be BOOTP clients that don't adhere to a lease time?

Chuck Church
Lead Design Engineer
Wam!Net Government Services
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
PGP key:

> -----Original Message-----
> From: Kenneth Wygand [mailto:KWygand@xxxxxxxxxxxxxxxx]
> Sent: Tuesday, March 09, 2004 10:40 AM
> To: ccielab@xxxxxxxxxxxxxx
> Subject: DHCP Puzzler
> I have an interesting scenario that I can't explain.  I'm looking at a
> 3640 router running as a DHCP server with a "standard" configuration -
> no conflict logging, just a specified pool and an excluded range for
> static addresses.  No hard-coded MAC addresses or permanent entries.
> Yet when I run a "show ip dhcp binding", I see several entries whose
> lease expiration is listed as "infinite".  I have the lease 
> time set for
> 1 hour, and all of the other addresses are adhering to this
> configuration.  Why would some entries be listed as infinite? 
>  As far as
> I know, the DHCP server dictates the least time, not the DHCP client.
> Hmm... anyone have any clues?  :-)
> Kenneth E. Wygand
> Systems Engineer, Project Services
> CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
> Network+, A+
> Custom Computer Specialists, Inc.
> "The only unattainable goal is the one not attempted."
> -Anonymous
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