I understand that the client-identifier is the mac address of the device (aa11.bb12.cc13) and the hardware-address is the hexadecimal value of client-identifier with a prefix of the LAN interface.
If the IP is allocated through the interface fa0/1, then it should be 01aa.11bb.12cc.13
The question is when to use client-identifier and when to use hardware-address?
What prompted me to ask this question?
I configured a reservation for a Kyocera printer FS-2100DN using hardware address (hardware-address 0017.c8xx.xxxx) it didn't work, so my boss changed it to (client-identifier 0100.17c8.xxxx.xx) and it worked like a champ.
Can someone please throw some light on this. Thanks.