I am configuring a catalyst 4507 switch as DHCP server , it was working fine but suddenly it stopped distributing dhcp in some pools and still working in others !!
i used clear ip dhcp binding , ireloaded the switch and still having same problem .
using debug ip dhcp server events it gives the following
006853: *Dec 11 14:13:41.859: DHCPD: address pool xyz is empty
interface vlan 128
ip address 172.20.128.1 255.255.255.0
ip dhcp pool xyz
network 172.20.128.0 255.255.255.0
switchport mode access
switchport access vlan 128