epmahc1
asked on
Why sniffer can capture packet on switch
I use cisco 2900 seriesXL . After i ran Sniffer Pro
I can see packet from A to B , but my computer is C
There're many kind of packet http icmp
but there's some notice that this event is one-way
means A send to B but B not reply.......
I set nothing on switch...
Is switch becomes hub ???
I can see packet from A to B , but my computer is C
There're many kind of packet http icmp
but there's some notice that this event is one-way
means A send to B but B not reply.......
I set nothing on switch...
Is switch becomes hub ???
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G'day, epmahc1
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No comment has been added lately (114 days), so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area for this question:
RECOMMENDATION: Points awarded to: SteveJ
If you would like to keep this question open for more expert input, this cleanup effort will get it closer to the top of the list where it will get more visibility for the experts.
Please leave any comments here within 7 days.
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
Thanks,
lrmoore
EE Cleanup Volunteer
---------------------
If you feel that your question was not properly addressed, or that none of the comments received were appropriate answers, please post a request in Community support (with a link to this page) to refund your points. https://www.experts-exchange.com/Community_Support/
Per recommendation, force-accepted.
Netminder
EE Admin
Netminder
EE Admin
If you want to capture the traffic on the entire switch, you need to configure a SPAN port. Keep in mind that SPAN ports can only span ports within the same VLAN. If you have more than one VLAN configured on your switch, you will need a seperate SPAN port.
Bryan