VoIP Ethernet Capture: Difference between revisions

Revision as of 10:21, 17 May 2011

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.

Warning: When configuring a port as a mirror, it is important to connect that Ethernet port directly to a host. Otherwise, it will create problem with to the Ethernet switch

TMG800

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 Tmedia unit using SSH.
Access the telecom baseboard from the Tmedia using telnet.

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.

Capture VoIP0 with VoIP1

For capturing all Ethernet packets that goes through VoIP0 with VoIP1

mv88eMonitor 0x1 0x1 1

To stop the capture

mv88eMonitor 0 0 1

Capture VoIP1 with VoIP0

For capturing all Ethernet packets that goes through VoIP1 with VoIP0

mv88eMonitor 0x2 0x2 0

To stop the capture

mv88eMonitor 0 0 0

TMG3200

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.

Preparing Tmedia for Capture

Once the physical setup is ready. It is possible to start capturing the RTP.

Access the Tmedia unit using SSH.
Access the telecom baseboard from the Tmedia using telnet.

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.

Capture VoIP0 with VoIP1

For capturing all Ethernet packets that goes through VoIP0 with VoIP1

mv88eMonitor 0x4 0x4 3

To stop the capture

mv88eMonitor 0 0 3

Capture VoIP1 with VoIP0

For capturing all Ethernet packets that goes through VoIP1 with VoIP0

mv88eMonitor 0x8 0x8 2

To stop the capture

mv88eMonitor 0 0 2

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.

Capture VoIP0 with VoIP1

For capturing all Ethernet packets that goes through VoIP0 with VoIP1

mv88eMonitor 0x4 0x4 3

To stop the capture

mv88eMonitor 0 0 3

Capture VoIP1 with VoIP0

For capturing all Ethernet packets that goes through VoIP1 with VoIP0

mv88eMonitor 0x8 0x8 2

To stop the capture

mv88eMonitor 0 0 2

@@ Line 4: / Line 4: @@
-== Physical Setup ==
+== TMG800 ==
+=== Physical Setup ===
 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.
-== TMG800 ==
 Once the physical setup is ready. It is possible to start capturing the RTP.
-*Access to the [[Tmedia]] unit using SSH.
+=== Preparing Tmedia for Capture ===
-*Access the telecom baseboard of the [[Tmedia]] using telnet.
+*Access the [[Tmedia]] unit using SSH.
+*Access the telecom baseboard from the [[Tmedia]] using telnet.
   telnet 172.31.1.1
 *Start Wireshark to capture the Ethernet packets with the connected laptop.
@@ Line 32: / Line 33: @@
 == TMG3200 ==
+=== Physical Setup ===
+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.
+=== Preparing Tmedia for Capture ===
 Once the physical setup is ready. It is possible to start capturing the RTP.
-*Start Wireshark to capture the Ethernet packets with the connected laptop.
+*Access the [[Tmedia]] unit using SSH.
-*Do one of the following command to capture packets according to your setup.
+*Access the telecom baseboard from the [[Tmedia]] using telnet.
-*Access to the [[Tmedia]] unit using SSH.
-*Access the telecom baseboard of the [[Tmedia]] using telnet.
   telnet 172.31.1.1
 *Start Wireshark to capture the Ethernet packets with the connected laptop.
@@ Line 56: / Line 60: @@
 == TMG7800 ==
+=== Physical Setup ===
+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.
 Once the physical setup is ready. It is possible to start capturing the RTP.
-*Start Wireshark to capture the Ethernet packets with the connected laptop.
+=== Preparing Tmedia for Capture ===
-*Do one of the following command to capture packets according to your setup.
+*Access the telecom unit ([[TMG7800|TMG7800-TE]], [[TMG7800|TMG7800-DS3]] or [[TMG7800|TMG7800-STM1]]) you want to capture using telnet.
-*Access to the [[TMG7800|TMG7800-CTRL]] unit using SSH.
-*Access the telecom unit ([[TMG7800|TMG7800-TE]], [[TMG7800|TMG7800-DS3]] or [[TMG7800|TMG7800-STM1]]) using telnet.
   telnet [eth0 IP address of the telecom unit]
 *Start Wireshark to capture the Ethernet packets with the connected laptop.