MAC binding problem in Cisco router

From: Joshua (joshualixin@gmail.com)
Date: Fri May 11 2007 - 20:02:45 ART

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Hi,

I am trying to test DHCP MAC binding in cisco 3550. Below is the problem.

ip dhcp pool test
   network 10.10.10.0 255.255.255.0
   dns-server 10.10.11.2
!
ip dhcp pool reserve
   host 10.10.10.2 255.255.255.0
   hardware-address 0018.8bb0.dc63

After i release and renew IP in the PC, which MAC reserved, it grab another
ip and MAC address changed in DHCP database.

Switch#sh ip dhcp bin
IP address Client-ID/ Lease expiration Type
                 Hardware address
10.10.10.2 0018.8bb0.dc63 Infinite Manual
10.10.10.3 0100.188b.b0dc.63 Mar 02 1993 01:28 AM Automatic

Could anybody explain it?

Thanks

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