VoIP Ethernet Capture TMG3200 B - Revision history

Allyntree at 18:14, 23 June 2024

2024-06-23T18:14:50Z

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Allyntree at 19:28, 10 December 2020

2020-12-10T19:28:32Z

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 == Capturing using the [[TMG3200]]'s internal host ==

Luc Morissette: Added version 3.0 and 3.2

2020-06-23T21:14:21Z

Added version 3.0 and 3.2

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	=== '''''Applies to version(s): v2.8, v2.9, v2.10''''' ===		=== '''''Applies to version(s): v2.8, v2.9, v2.10, v3.0, v3.2''''' ===
	{{DISPLAYTITLE:VoIP Ethernet Capture TMG3200}}		{{DISPLAYTITLE:VoIP Ethernet Capture TMG3200}}

William Wong: /* References */

2018-03-26T03:36:02Z

References

← Older revision		Revision as of 23:36, 25 March 2018
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	== References ==		== References ==
	*[[VoIP_Ethernet_Capture\|VoIP Ethernet Capture]]		*[[VoIP_Ethernet_Capture\|VoIP Ethernet Capture]]
			*[[VoIP Ethernet Capture FreeSBC A\|FreeSBC VoIP Ethernet Capture]]

Allyntree at 18:39, 6 January 2017

2017-01-06T18:39:13Z

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	{{DISPLAYTITLE:VoIP Ethernet Capture TMG3200}}		{{DISPLAYTITLE:VoIP Ethernet Capture TMG3200}}

Allyntree at 15:48, 8 December 2015

2015-12-08T15:48:41Z

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Luc Morissette: Added page for VOIP ethernet capture TMG3200, 2.8

2015-02-24T19:45:56Z

Added page for VOIP ethernet capture TMG3200, 2.8

New page

__NOTOC__
=== '''''Applies to version(s): v2.8''''' ===
{{DISPLAYTITLE:VoIP Ethernet Capture TMG3200}}

== Capturing using the [[TMG3200]]'s internal host ==
The [[TMG3200]]'s internal host can be used for capturing packets that are mirrored from the VOIP0 and/or VOIP1 physical ports. This includes RTP traffic.

=== Preparing the [[Tmedia]] for capture ===
*If the traffic to be captured is on a VLAN, then an [[Toolpack:Configuring_VoIP_Interfaces_C|IP Interface]] with the services "MANAGEMENT" must be created. 
**The IP has to be static and on the same network as the one to capture. 
**The virtual port assigned must be the same as the port to capture. See [[Toolpack:Configuring_VoIP_Interfaces_C|IP Interface]].

=== 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:
0/tbgw>
To capture VoIP0 traffic:
mv88eMonitor 0x4 0x4 8 600
To capture VoIP1 traffic:
mv88eMonitor 0x8 0x8 8 600
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 
if the VOIP traffic is untagged:
tcpdump -i int0 -s 1500 -w voip_capture.cap
If the traffic is tagged, use the name of the IP interface created previously (for example vlan333)
tcpdump -i vlan333 -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 [https://filezilla-project.org/ Filezilla] or [http://winscp.net/ WinSCP]. 
The file will be located in
/root

== References ==
*[[VoIP_Ethernet_Capture|VoIP Ethernet Capture]]