VoIP Ethernet Capture TMG800
Applies to version v2.7
Capturing using the TMG800's internal host
The TMG800's internal host can be used for capturing packets that are mirrored from the VOIP0 and/or VOIP1 physical ports.
Start Capture
You need two SSH sessions to capture the traffic:
First, access the Tmedia management interface using SSH. Then, access the telecom baseboard using telnet 172.31.1.1 ( prompt is tml> )
To capture VoIP0 traffic:
mv88eMonitor 0x1 0x1 2 600
To capture VoIP1 traffic:
mv88eMonitor 0x2 0x2 2 600
In the example the duration is 600 seconds, thus will capture traffic for 10 minutes
Second, access the Tmedia management interface using SSH ( prompt is [root@TBxxxxxx ~]# )
tcpdump -i mgmt0 -s 1500 -w capture_file.cap
You will see something like this:
tcpdump: listening on mgmt0, link-type EN10MB (Ethernet), capture size 1500 bytes
Stop Capture
When you're ready, stop the capture by pressing control-C on the shell that was running tcpdump command
You will see something like this:
364 packets captured 590 packets received by filter 0 packets dropped by kernel
Download Capture
To download the capture, use SSH secure copy ("sftp") to the Tmedia management port. This can be done on Windows using tools like Filezilla or WinSCP.
The file will be located in
/root
