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johnnyboy41987 avatar image
johnnyboy41987 asked johnnyboy41987 posted

Wireshark session displaying empty field names for wireless packets

Hi,

 

       We are using iTest 4.0.3 for automating a testcase which involves sniffing wireless packets. The wireshark session in iTest is not displaing some fields in the "show details <packet_no>" command. The same field is displaying correctly in the tshark output.

 

For example a snip from the "show details <packet_no>" output in wireshark session

 

               wlan_mgt.tag.interpretation                       | 
                                                           | Vendor Specific: WME <----- No Field displayed
wlan_mgt.tag.number                               | 221

 Same packet snippet from  tshark output

           Tag interpretation: Unknown + Name: tb4-root1 #Clients: 0
        Vendor Specific: WME       <---- Field name is correctly displayed
            Tag Number: 221 (Vendor Specific)
            Tag length: 24
            Tag interpretation: WME PE: type 2, subtype 1, version 1, parameter set 133
            Tag interpretation: WME AC Parameters: ACI 0 (Best Effort), Admission Control not Mandatory, AIFSN 3, ECWmin 4, ECWmax 4, TXOP 0
            Tag interpretation: WME AC Parameters: ACI 1 (Background), Admission Control not Mandatory, AIFSN 7, ECWmin 4, ECWmax 4, TXOP 0
            Tag interpretation: WME AC Parameters: ACI 2 (Video), Admission Control not Mandatory, AIFSN 2, ECWmin 3, ECWmax 3, TXOP 94
            Tag interpretation: WME AC Parame

 

I am attaching both wireshark and tshark output in this post. Can anyone tell me why this is happening ?

 

iTest
wireshark_output.txt (143.7 KiB)
tshark_output.txt (6.8 KiB)
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amresh avatar image
amresh answered amresh posted

Hi,

 

Are you able to see those fields in Wireshark GUI correctly. If yes could you please attach your .pcap file.

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lakshminarayana avatar image
lakshminarayana answered lakshminarayana posted

Hi,

 

According to my understanding i think Vendor Specific: WME and Vendor Specific: Aironet CCX version = 5  are a kind of headers and under that the field names and values are mentioned in details.

 

I hope this information might help you.

 

 

Thanks

1 comment
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johnnyboy41987 avatar image johnnyboy41987 commented ·

Yes it is a header but why there is no field name?

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