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Interesting. &nbsp;What version of Ethereal? &nbsp;What sort of VoIP packets? &nbsp;SIP, H323, etc? &nbsp;Are the packets tagged? &nbsp;Could you post more detail?<br />
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Tks!
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Interesting.  What version of Ethereal?  What sort of VoIP packets?  SIP, H323, etc?  Are the packets tagged?  Could you post more detail?

Tks!

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Ethereal version 0.10.14 &nbsp; Using a Mitel 3300. &nbsp;Sounds like what happen with Q_21555885.html. &nbsp;The error I get in ethereal is &nbsp;&quot;Bogus IP Header length (0, must be at least 20)&quot;
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Ethereal version 0.10.14   Using a Mitel 3300.  Sounds like what happen with Q_21555885.html.  The error I get in ethereal is  "Bogus IP Header length (0, must be at least 20)"

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Are you capturing inline with a hub or by mirroring a port? &nbsp;Could the packets be fragmented?<br />
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Are you capturing the full packet for traffic other than the VoIP?
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Are you capturing inline with a hub or by mirroring a port?  Could the packets be fragmented?

Are you capturing the full packet for traffic other than the VoIP?

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Using a Hub. &nbsp;Yes the packets could be fragmented. &nbsp;The only thing on this VLAN is the voice. &nbsp; Setup is out of Cisco 3750 port to Hub. &nbsp;Hub has a connection to the Mitel 3300 and a connection to a non addressed NIC on pc. &nbsp;I'm able to capture data. &nbsp;I am capturing any and all traffic between Mitel 3300 and Cisco 3750 switch on vlan.
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Using a Hub.  Yes the packets could be fragmented.  The only thing on this VLAN is the voice.   Setup is out of Cisco 3750 port to Hub.  Hub has a connection to the Mitel 3300 and a connection to a non addressed NIC on pc.  I'm able to capture data.  I am capturing any and all traffic between Mitel 3300 and Cisco 3750 switch on vlan.

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<a href="http://www.packetizer.com/voip/diagnostics/testtools/" rel="ugc">http://www.packetizer.com/voip/diagnostics/testtools/</a><br />

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http://www.packetizer.com/voip/diagnostics/testtools/ [http://www.packetizer.com/voip/diagnostics/testtools/]


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I'm having an issue with Ethereal showing VoIP packets as bogus IP header. &nbsp;This was asked before but the solution was not posted.
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I'm having an issue with Ethereal showing VoIP packets as bogus IP header.  This was asked before but the solution was not posted.

VoIP packets showing up as bogus IP header in Ethereal

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).