Reference Guide
690 | IPv4 Routing
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 TCP src=23, dst=40869, seq=2112994894, ack=606901739, win=8191 ACK PUSH
IP: s=10.1.2.206 (Ma 0/0), d=10.1.2.62, len 40, rcvd
 TCP src=0, dst=0, seq=0, ack=0, win=0
IP: s=10.1.2.62 (local), d=10.1.2.206 (Ma 0/0), len 226, sending
 TCP src=23, dst=40869, seq=2112994896, ack=606901739, win=8192 ACK PUSH
IP: s=10.1.2.216 (Ma 0/0), d=10.1.2.255, len 78, rcvd
 UDP src=0, dst=0
IP: s=10.1.2.62 (local), d=10.1.2.3 (Ma 0/0), len 1500, sending fragment
 IP Fragment, Ident = 4741, fragment offset = 0
 ICMP type=0, code=0
IP: s=10.1.2.62 (local), d=10.1.2.3 (Ma 0/0), len 1500, sending fragment
 IP Fragment, Ident = 4741, fragment offset = 1480
IP: s=40.40.40.40 (local), d=224.0.0.5 (Gi 4/11), len 64, sending broad/
multicast proto=89
IP: s=40.40.40.40 (local), d=224.0.0.6 (Gi 4/11), len 28, sending broad/
multicast proto=2
IP: s=0.0.0.0, d=30.30.30.30, len 100, unroutable
 ICMP type=8, code=0
IP: s=0.0.0.0, d=30.30.30.30, len 100, unroutable
 ICMP type=8, code=0
Table 24-1. debug ip packet Command Example Fields
Field Description
s= Lists the source address of the packet and the name of the interface 
(in parentheses) that received the packet.
d= Lists the destination address of the packet and the name of the 
interface (in parentheses) through which the packet is being sent 
out on the network.
len Displays the packet’s length.
sending
rcvd
fragment
sending broad/multicast proto
unroutable
The last part of each line lists the status of the packet. 
TCP src= Displays the source and destination ports, the sequence number, 
the acknowledgement number, and the window size of the packets 
in that TCP packets.
UDP src= Displays the source and destination ports for the UDP packets.
ICMP type= Displays the ICMP type and code.
IP Fragment States that it is a fragment and displays the unique number 
identifying the fragment (Ident) and the offset (in 8-byte units) of 
this fragment (fragment offset) from the beginning of the original 
datagram. 










