VoIP Ethernet Capture TMG800 A
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{{DISPLAYTITLE:VoIP Ethernet Capture TMG800}} | {{DISPLAYTITLE:VoIP Ethernet Capture TMG800}} | ||
| − | == Capturing using the TMG800's internal host == | + | == 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. | + | The [[TMG800]]'s internal host can be used for capturing packets that are mirrored from the VOIP0 and/or VOIP1 physical ports. This includes RTP traffic. |
=== Start Capture === | === Start Capture === | ||
You need '''two''' SSH sessions to capture the traffic: <br /> | You need '''two''' SSH sessions to capture the traffic: <br /> | ||
| − | '''First''', access the [[Tmedia]] management interface using SSH. Then, access the telecom baseboard using telnet 172.31.1.1 | + | '''First''', access the [[Tmedia]] management interface using SSH. Then, access the telecom baseboard using |
| + | telnet 172.31.1.1 | ||
| + | Prompt is now | ||
| + | tml> | ||
To capture VoIP0 traffic: | To capture VoIP0 traffic: | ||
mv88eMonitor 0x1 0x1 2 600 | mv88eMonitor 0x1 0x1 2 600 | ||
| Line 19: | Line 22: | ||
<br /> | <br /> | ||
<br /> | <br /> | ||
| − | '''Second''', access the [[Tmedia]] management interface using SSH | + | '''Second''', access the [[Tmedia]] management interface using SSH. |
| − | tcpdump -i mgmt0 -s 1500 -w | + | Prompt is now |
| + | [root@TBxxxxxx ~]# | ||
| + | To dump the content of the VOIP traffic in the file voip_capture.cap | ||
| + | tcpdump -i mgmt0 -s 1500 -w voip_capture.cap | ||
You will see something like this: | You will see something like this: | ||
tcpdump: listening on mgmt0, link-type EN10MB (Ethernet), capture size 1500 bytes | tcpdump: listening on mgmt0, link-type EN10MB (Ethernet), capture size 1500 bytes | ||
| Line 38: | Line 44: | ||
=== Download Capture === | === Download Capture === | ||
| − | To download the | + | To download the voip_capture.cap file, use SSH secure copy ("sftp") to the Tmedia management port. This can be done on Windows using tools like [https://filezilla-project.org/ Filezilla] or [http://winscp.net/ WinSCP].<br /> |
The file will be located in | The file will be located in | ||
/root | /root | ||
| Line 44: | Line 50: | ||
== References == | == References == | ||
*[[VoIP_Ethernet_Capture|VoIP Ethernet Capture]] | *[[VoIP_Ethernet_Capture|VoIP Ethernet Capture]] | ||
| + | *[[VoIP Ethernet Capture FreeSBC A|FreeSBC VoIP Ethernet Capture]] | ||
Latest revision as of 22:40, 25 March 2018
Applies to version(s): 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. This includes RTP traffic.
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 now
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.
Note: We don't recommend to keep the capturing for a long time. This is only for debugging purpose.
Second, access the Tmedia management interface using SSH.
Prompt is now
[root@TBxxxxxx ~]#
To dump the content of the VOIP traffic in the file voip_capture.cap
tcpdump -i mgmt0 -s 1500 -w voip_capture.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
- Access the telecom baseboard from the Tmedia using telnet.
telnet 172.31.1.1
- Stop the capture
mv88eMonitor 0 0 0
Download Capture
To download the voip_capture.cap file, 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
