3Com Switch 7750 Configuration Guide Guide

128 CHAPTER 15: IP PERFORMANCE CONFIGURATION
■ Use the terminal debugging command to enable debugging information to
be output to the console.
■ Use the debugging udp packet command to enable the UDP debugging to
trace UDP packets.
<SW7750> terminal debugging
<SW7750> debugging udp packet
The UDP packets are shown in the following format:
UDP output packet:
Source IP address:202.38.160.1
Source port:1024
Destination IP Address 202.38.160.1
Destination port: 4296
■ Use the debugging tcp packet command to enable the TCP debugging to
trace TCP packets.
<SW7750> terminal debugging
<SW7750> debugging tcp packet
Then the TCP packets received or sent will be displayed in the following format in
real time:
TCP output packet:
Source IP address:202.38.160.1
Source port:1024
Destination IP Address 202.38.160.1
Destination port: 4296
Sequence number :4185089
Ack number: 0
Flag :SYN
Packet length :60
Data offset: 10