Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements
Webcast-Catalyst9k
New Member

Port Spanning Configuration Question

This is probably far too basic a question, but I having a hard time finding an answer.  Can you configure a spanning session from a lesser speed interface to a greater speed interface?  We have two 6509's configured with VSS in our DC and there are 10Gb fiber interfaces which connect to HP Flex-10 switches that are in our blade chassis.  Our server guy wants to do a packet capture of that traffic, but needs to run it from his laptop which would connect via a 1Gb copper interface on the 6509.  Is this possible?  Is there an easier way to do this?  Any help would be greatly appreciated.

Thanks.

Chris

Everyone's tags (1)
3 REPLIES
Cisco Employee

Re: Port Spanning Configuration Question

Hello,

Conceptually, it is possible to configure the port spanning the way you have

described. However, the results may not be as you would have expected. If

the traffic passing through that interface is beyond a Gig per second, then

you may not see everything on your destination port. Other than that, it

should work fine.

Regards,

NT

Hall of Fame Super Bronze

Re: Port Spanning Configuration Question

Yes, it's possible.

You may have packet drops if the aggegate speed of all SPAN source ports is greater than the SPAN destination port but it's definitely doable.

Regards,

Edison

Re: Port Spanning Configuration Question

Here is a link that should help you as well.

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612.shtml

Please remember to rate any posts that help.

Mike

Great info +5 for those posts

210
Views
10
Helpful
3
Replies
CreatePlease to create content