VoIP Ethernet Capture
From TBwiki
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| − | + | == Capturing using the TMG800's internal host == | |
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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. | ||
| − | + | === Physical Setup === | |
No specific physical setup is required | No specific physical setup is required | ||
| − | + | === Preparing Tmedia for Capture (enable ports mirroring) === | |
*Access the [[Tmedia]] unit using SSH. | *Access the [[Tmedia]] unit using SSH. | ||
*Access the telecom baseboard from the [[Tmedia]] using telnet. | *Access the telecom baseboard from the [[Tmedia]] using telnet. | ||
telnet 172.31.1.1 | telnet 172.31.1.1 | ||
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| − | + | ==== TMG800 ==== | |
| + | Do one of the following command to capture packets according to your setup, to mirror packets toward the linux host CPU, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes): | ||
| + | *For capturing all Ethernet packets from VOIP0 | ||
mv88eMonitor 0x1 0x1 2 600 | mv88eMonitor 0x1 0x1 2 600 | ||
| − | + | *For capturing all Ethernet packets from VOIP1 | |
mv88eMonitor 0x2 0x2 2 600 | mv88eMonitor 0x2 0x2 2 600 | ||
| − | + | *For capturing all Ethernet packets from VOIP0 and VOIP1 | |
mv88eMonitor 0x3 0x3 2 600 | mv88eMonitor 0x3 0x3 2 600 | ||
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| − | ==== Start the Capture | + | ==== TMG3200 ==== |
| + | Do one of the following command to capture packets according to your setup, to mirror packets toward the linux host CPU, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes): | ||
| + | *For capturing all Ethernet packets from VOIP0 | ||
| + | mv88eMonitor 0x4 0x4 8 600 | ||
| + | *For capturing all Ethernet packets from VOIP1 | ||
| + | mv88eMonitor 0x8 0x8 8 600 | ||
| + | *For capturing all Ethernet packets from VOIP0 and VOIP1 | ||
| + | mv88eMonitor 0xC 0xC 8 600 | ||
| + | |||
| + | === Start the Capture === | ||
*Exit the telecom baseboard's shell (type "exit") | *Exit the telecom baseboard's shell (type "exit") | ||
*Use the "tcpdump" tool on linux to capture mirrored packets (received on the "mgmt0" interface): | *Use the "tcpdump" tool on linux to capture mirrored packets (received on the "mgmt0" interface): | ||
tcpdump -i mgmt0 -s 1500 -w capture_file.cap | tcpdump -i mgmt0 -s 1500 -w capture_file.cap | ||
| − | === Capturing from an external host (laptop) | + | === Stop the Capture === |
| + | When you're ready, stop the capture by | ||
| + | *pressing control-C on the shell that was running tcpdump command | ||
| + | *Access the telecom baseboard from the [[Tmedia]] using telnet. | ||
| + | telnet 172.31.1.1 | ||
| + | *Stop the capture | ||
| + | mv88eMonitor 0 0 1 | ||
| + | |||
| + | === Download the 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. | ||
| + | |||
| + | == Capturing from an external host (laptop) == | ||
'''Warning''': When configuring a port as a mirror, it is important to connect that Ethernet port directly to a host (like a laptop). Otherwise, it will create problem with to the Ethernet switch | '''Warning''': When configuring a port as a mirror, it is important to connect that Ethernet port directly to a host (like a laptop). Otherwise, it will create problem with to the Ethernet switch | ||
| − | + | === Physical Setup === | |
To do a VoIP capture it is required to: | To do a VoIP capture it is required to: | ||
*Connect one of the VoIP Ethernet port to a laptop with [http://www.wireshark.org/ Wireshark] installed and 1Gbs Network card. | *Connect one of the VoIP Ethernet port to a laptop with [http://www.wireshark.org/ Wireshark] installed and 1Gbs Network card. | ||
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Once the physical setup is ready. It is possible to start capturing all packets received and sent from VOIP0 or VOIP1 using the other interface (VOIP1 or VOIP0). | Once the physical setup is ready. It is possible to start capturing all packets received and sent from VOIP0 or VOIP1 using the other interface (VOIP1 or VOIP0). | ||
| − | + | === Preparing Tmedia for Capture === | |
*Access the [[Tmedia]] unit using SSH. | *Access the [[Tmedia]] unit using SSH. | ||
*Access the telecom baseboard from the [[Tmedia]] using telnet. | *Access the telecom baseboard from the [[Tmedia]] using telnet. | ||
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*Do one of the following command to capture packets according to your setup. | *Do one of the following command to capture packets according to your setup. | ||
| − | ==== | + | ==== TMG800 ==== |
| − | + | For capturing all Ethernet packets that goes through VoIP0 with VoIP1, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes) | |
mv88eMonitor 0x1 0x1 1 600 | mv88eMonitor 0x1 0x1 1 600 | ||
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| − | + | For capturing all Ethernet packets that goes through VoIP1 with VoIP0, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes) | |
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mv88eMonitor 0x2 0x2 0 600 | mv88eMonitor 0x2 0x2 0 600 | ||
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| − | == | + | ==== TMG3200 ==== |
| − | + | For capturing all Ethernet packets that goes through VoIP0 with VoIP1, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes) | |
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mv88eMonitor 0x4 0x4 3 600 | mv88eMonitor 0x4 0x4 3 600 | ||
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| − | + | For capturing all Ethernet packets that goes through VoIP1 with VoIP0, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes) | |
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mv88eMonitor 0x8 0x8 2 600 | mv88eMonitor 0x8 0x8 2 600 | ||
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| + | === Stop the Capture === | ||
| + | mv88eMonitor 0 0 0 | ||
== TMG7800 == | == TMG7800 == | ||
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*Do one of the following command to capture packets according to your setup. | *Do one of the following command to capture packets according to your setup. | ||
| − | === Capture | + | === Start the Capture === |
| − | + | For capturing all Ethernet packets that goes through VoIP0 with VoIP1 | |
mv88eMonitor 0x4 0x4 3 | mv88eMonitor 0x4 0x4 3 | ||
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| − | + | For capturing all Ethernet packets that goes through VoIP1 with VoIP0 | |
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mv88eMonitor 0x8 0x8 2 | mv88eMonitor 0x8 0x8 2 | ||
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| − | mv88eMonitor 0 0 | + | === Stop the Capture === |
| + | mv88eMonitor 0 0 3 | ||
Revision as of 15:09, 11 April 2013
The Tmedia product can configure one of its VoIP Ethernet ports to do Port Mirroring. This is useful when investigating RTP, Codecs or IP Tones issues.
Contents |
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.
Physical Setup
No specific physical setup is required
Preparing Tmedia for Capture (enable ports mirroring)
telnet 172.31.1.1
TMG800
Do one of the following command to capture packets according to your setup, to mirror packets toward the linux host CPU, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes):
- For capturing all Ethernet packets from VOIP0
mv88eMonitor 0x1 0x1 2 600
- For capturing all Ethernet packets from VOIP1
mv88eMonitor 0x2 0x2 2 600
- For capturing all Ethernet packets from VOIP0 and VOIP1
mv88eMonitor 0x3 0x3 2 600
TMG3200
Do one of the following command to capture packets according to your setup, to mirror packets toward the linux host CPU, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes):
- For capturing all Ethernet packets from VOIP0
mv88eMonitor 0x4 0x4 8 600
- For capturing all Ethernet packets from VOIP1
mv88eMonitor 0x8 0x8 8 600
- For capturing all Ethernet packets from VOIP0 and VOIP1
mv88eMonitor 0xC 0xC 8 600
Start the Capture
- Exit the telecom baseboard's shell (type "exit")
- Use the "tcpdump" tool on linux to capture mirrored packets (received on the "mgmt0" interface):
tcpdump -i mgmt0 -s 1500 -w capture_file.cap
Stop the Capture
When you're ready, stop the capture by
- pressing control-C on the shell that was running tcpdump command
- Access the telecom baseboard from the Tmedia using telnet.
telnet 172.31.1.1
- Stop the capture
mv88eMonitor 0 0 1
Download the 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.
Capturing from an external host (laptop)
Warning: When configuring a port as a mirror, it is important to connect that Ethernet port directly to a host (like a laptop). Otherwise, it will create problem with to the Ethernet switch
Physical Setup
To do a VoIP capture it is required to:
- Connect one of the VoIP Ethernet port to a laptop with Wireshark installed and 1Gbs Network card.
Once the physical setup is ready. It is possible to start capturing all packets received and sent from VOIP0 or VOIP1 using the other interface (VOIP1 or VOIP0).
Preparing Tmedia for Capture
telnet 172.31.1.1
- Start Wireshark to capture the Ethernet packets with the connected laptop.
- Do one of the following command to capture packets according to your setup.
TMG800
For capturing all Ethernet packets that goes through VoIP0 with VoIP1, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes)
mv88eMonitor 0x1 0x1 1 600
For capturing all Ethernet packets that goes through VoIP1 with VoIP0, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes)
mv88eMonitor 0x2 0x2 0 600
TMG3200
For capturing all Ethernet packets that goes through VoIP0 with VoIP1, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes)
mv88eMonitor 0x4 0x4 3 600
For capturing all Ethernet packets that goes through VoIP1 with VoIP0, for a configurable duration (in the following example the duration is 600 seconds, thus 10 minutes)
mv88eMonitor 0x8 0x8 2 600
Stop the Capture
mv88eMonitor 0 0 0
TMG7800
Physical Setup
To do a VoIP capture it is required to:
- Connect one of the VoIP Ethernet port to a laptop with Wireshark installed and 1Gbs Network card.
Once the physical setup is ready. It is possible to start capturing the RTP.
Preparing Tmedia for Capture
- Access the telecom unit (TMG7800-TE, TMG7800-DS3 or TMG7800-STM1) you want to capture using telnet.
telnet [eth0 IP address of the telecom unit]
- Start Wireshark to capture the Ethernet packets with the connected laptop.
- Do one of the following command to capture packets according to your setup.
Start the Capture
For capturing all Ethernet packets that goes through VoIP0 with VoIP1
mv88eMonitor 0x4 0x4 3
For capturing all Ethernet packets that goes through VoIP1 with VoIP0
mv88eMonitor 0x8 0x8 2
Stop the Capture
mv88eMonitor 0 0 3
