debug packet is no longer current on the 7x software - you want to use the capture feature.
e.g.
Create an access list with traffic you're interested in
access-list cap_traffic extended permit ip host 192.168.1.2 any
continue adding to this ACL depending on how much traffic you're interested in..
access-list cap_traffic extended permit tcp any host 192.168.1.2 eq www
capture access-list interface
To view active capture sessions:
sh cap
To view the details of a capture session
sh cap
Use the no form to end capture sessions then clean up your ACL's..
There are many variations to the capture command:
access-list Capture packets that match access-list
buffer Configure size of capture buffer, default is 512 KB
circular-buffer Overwrite buffer from beginning when full, default is
non-circular
ethernet-type Capture Ethernet packets of a particular type, default is IP
interface Capture packets on a specific interface
packet-length Configure maximum length to save from each packet, default
is 68 bytes
trace Trace the captured packets
type Capture packets based on a particular type
Hope this helps
Paul.
