Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

capturing traffic for all vlans

Hi all, If I want to capture all the broadcast traffic for all vlans, i set the port my pc plugs into as a trunk. would this work ok ?

3 REPLIES
Hall of Fame Super Silver

Re: capturing traffic for all vlans

Hello Carl,

no it is the source definition that defines what you can capture not the destination port settings

You need to declare the list of vlans in the monitor source section.

I wouldn't do so because the destination port is easily overwhelmed (total traffic can be much more then port rate)

This can be a problem for the switch.

Even c6500 can have cpu at 100% in case of high oversubscption of a destination port.

So be careful!

Hope to help

Giuseppe

New Member

Re: capturing traffic for all vlans

so are you saying my pc will receive the traffic for all the vlans on that port ?

Hall of Fame Super Silver

Re: capturing traffic for all vlans

Hello Carl,

I was trying to advice that this can lead to further problems when there is heavy oversubscription of the span destination port = mirrored traffic is much more then output port speed.

Hope to help

Giuseppe

123
Views
0
Helpful
3
Replies
CreatePlease to create content