Network/Voice packet sniffing tool

[Horacio Gutierrez]

Hello,

I need a free tool that isnt wireshark that will let me sniffing voice packets from a cisco phone when I plug into a cisco switch using span. Any suggestions what free software is out there I can use besides wireshark.  I need to determine by analyzing voice packets such as UDP or RTP,etc.  where those packets are been dropped in my network, such as a switch or on the ISP side.

Thanks.

[Bilal Nawaz]

Hello, you could look at these:

http://www.layerview.net/
http://www.nirsoft.net/network_tools.html
http://technet.microsoft.com/en-gb/sysinternals/bb897437.aspx

Wireshark is pretty comprehensive though. Was there any reason to avoid using wireshark? :-)

Hope this helps

Sent from Cisco Technical Support iPhone App

[Horacio Gutierrez]

Hi Bill,

Out of those websites you gave me which tool will be able to capture voice packets to analyze accross the network from one cisco phone to another cisco phone to determince where those packets are been dropped?

[Reza Sharifi]

Here is free one;

http://www.colasoft.com/capsa-free/

HTH

[Horacio Gutierrez]

Hi Reza,

Will this tool be able to capture voice packets to analyze accross the network from one cisco phone to another cisco phone to determince where those packets are been dropped?

[Reza Sharifi]

Hi,

VoIP packets use UDP/RTP to transport. So, yes, it will capture all UDP/TCP comm ports.

HTH