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EXOS Packet Capture

EXOS Packet Capture

Stefan_K_
Valued Contributor

Hello,

today I played around with the built-in packet capture of EXOS ( How To: How to perform a local packet capture on an EXOS switch | Extreme Portal (force.com) )

I’m able to capture packets and open the pcap file with wireshark, but I only see the following packets:

999ffec7689143d294de259a963f2492_0cfb738b-55a4-498b-9533-89f57cd81ed1.png

Wondering if I’m doing something wrong or if the feature is something else than I’m thinking. Any hints?

Best regards
Stefan

2 ACCEPTED SOLUTIONS

CThompsonEXOS
Extreme Employee

Hi,

You can use the editcap tool to remove the first 52 bytes.  Mine looked something like below from Powershell:

PS C:\Program Files\Wireshark> .\editcap.exe -C 52 editcap.pcap newpcap.pcap

syntax below:
PS C:\Program Files\Wireshark> .\editcap.exe -C 52 <original pcap filename> <new pcap filename>

Below is more on editcap:

https://www.wireshark.org/docs/man-pages/editcap.html

Before:

83850ff01e9c44fd92c42a4a8fa2122d_701970b3-7509-4c5a-9bf0-a8dab60f51b4.png

 

After:

83850ff01e9c44fd92c42a4a8fa2122d_65f32e5a-5e2a-4a35-96da-75256f170e72.png

 

Thanks,

Chris Thompson

View solution in original post

booflix
New Contributor III

This is an interesting question because the built-in packet capture feature can be a bit confusing at first. If you're only seeing those packets in Wireshark, it may be related to the capture point, applied filters, or hardware offloading rather than the traffic itself. Checking the interface configuration and testing with a known traffic Gomovies flow could help narrow down the cause. I'd be interested to know what the final solution was, as it could be useful for anyone troubleshooting EXOS packet captures in the future.

View solution in original post

23 REPLIES 23

booflix
New Contributor III

Interesting discussion! EXOS built-in packet capture seems like a convenient way to troubleshoot network issues without needing additional hardware. However, seeing only a limited number of packets in Wireshark can make it difficult to identify the actual problem. It would be helpful to understand the capture filters and interface settings to ensure the required traffic is being recorded correctly. https://f2movies.se/ 

booflix
New Contributor III

Great discussion about EXOS packet capture! Being able to capture traffic directly from the switch and analyze it in Wireshark is really useful for troubleshooting network issues. If only a limited set of packets appears in the capture, it would be interesting to check the capture filters, selected ports, and whether the desired traffic is actually passing through the monitored interface. Understanding these details can make packet analysis much more effective.  https://dorawatch.us/

booflix
New Contributor III

This is a really interesting look at the built-in packet capture capabilities of EXOS. Being able to collect traffic directly from the switch and then inspect the resulting PCAP 24Drama  in Wireshark is extremely useful for troubleshooting. However, seeing only a limited set of packets can definitely raise questions about the capture configuration, filters, or which traffic the switch is actually exposing. It would be great to see what settings were used and what needs to be adjusted to capture the expected traffic. 

booflix
New Contributor III

Interesting! The built-in packet capture feature in EXOS seems useful for troubleshooting network issues. If Wireshark is only showing a limited set of packets, it would be worth checking the capture filters, interface configuration, and whether the traffic you want to analyze is actually passing through the monitored port. Hopefully, a few adjustments will help reveal the missing traffic and make the packet analysis more useful. https://brocoflix.watch/

GTM-P2G8KFN