[c-nsp] Strange NAT and DHCP Problem

Andy Saykao andy.saykao at staff.netspace.net.au
Tue Jul 21 01:47:10 EDT 2009


Found a similar post on NSP in Feb 2009.

http://www.gossamer-threads.com/lists/cisco/nsp/103408

Need the command "ip dhcp bootp ignore" but this isn't supported on the
7600.

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ftdbootp.
html#wp1026678

Cheers.

Andy

-----Original Message-----
From: Andy Saykao 
Sent: Tuesday, 21 July 2009 2:45 PM
To: 'Church, Charles'; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] Strange NAT and DHCP Problem

 
Hi Charles,

Tried what you suggested but no go.

no ip bootp server
clear ip dhcp binding <IP>

Client has obtained an "infinite" lease again.

172.16.75.119    0021.e9a0.777c          Infinite
Automatic

Cheers.

Andy

-----Original Message-----
From: Church, Charles [mailto:cchurc05 at harris.com]
Sent: Monday, 20 July 2009 10:12 PM
To: Andy Saykao; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] Strange NAT and DHCP Problem

The infinite DHCP entry is probably a BOOTP client, which doesn't have
the concept of a lease.  There are knobs (ip dhcp bootp ignore) that can
turn off bootp, and only allow DHCP.  I think by default, it'll service
both.

Chuck

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