Need to run a packet capture using Wireshark to monitor a few ports on a Catalyst 3550 switch

I am looking for detailed instructions on how to setup the SPAN, and specify ports to be monitored.

I am familiar with connecting a PC to the Switch and capture the packets using Wireshark
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Don JohnstonInstructorCommented:
Assuming the traffic you want to capture is on the f0/6 port:

monitor session 1 source interface f0/6

Open in new window

And your wireshark host in on f0/3

monitor session 1 destination interface f0/3

Open in new window


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
JohnBusiness Consultant (Owner)Commented:
If you need a very flexible Packet Sniffer that has Advanced rules for Port, IP, MAC capturing, consider using Comm View ( This is a very advanced packet sniffer that I use myself.
Don JohnstonInstructorCommented:
Non-compliant post deleted.
Thanks John.
I was going to send a PM to Nader... but I didn't want to overstep. :-)
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Switches / Hubs

From novice to tech pro — start learning today.