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RTP stream being stripped

How can I check to see if 802.1Q VLAN tagging information is being stripped from the RTP stream by the workstation's NIC?

2 REPLIES
Super Bronze

Re: RTP stream being stripped

WIth some difficulty, I imagine - what is your scenario?

Even if you use wireshark it would be difficult to know whether the NIC drivers are doing things or not. If your NIC supports multiple VLAN subinterfaces then you'd know if it was being stripped as you would receive it correctly in your app; but generally the traffic destined for a PC would not be dot1q encapsulated anyway.

Aaron

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
Green

Re: RTP stream being stripped

Some network cards strip the dot1q headers, so your packet capture won't  have this data. If you're not seeing dot1q headers please check the  following link from wireshark:

http://wiki.wireshark.org/CaptureSetup/VLAN#head-81781716144f2855ab0aff2f8b752e95f2562efb

Apply the previous settings to the machine you're capturing with.

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