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New Member

Span port limit

How many source ports can be ideally spanned to one destination port? we are planning to use an application in our serverfarm switch but looks like I will have to span more than 20 source ports to one destination, is it doable or recommended way? Is there any Cisco doc that tells us the statistics or utilization for the span ports?

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Bronze

Re: Span port limit

All depends upon the amount of traffic being sent from those 20 source ports. Any exceeded traffic will be dropped without affecting switch performance. This documentation has comprehensive information regarding SPAN on several Catalyst switches

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

HTH,

__

Edison.

5 REPLIES
Hall of Fame Super Bronze

Re: Span port limit

All depends upon the amount of traffic being sent from those 20 source ports. Any exceeded traffic will be dropped without affecting switch performance. This documentation has comprehensive information regarding SPAN on several Catalyst switches

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

HTH,

__

Edison.

New Member

Re: Span port limit

I have another question, I'm runing hybrid mode on SUP720 and I don't think I can span a vlan in CAT OS, correct?

Hall of Fame Super Bronze

Re: Span port limit

Did you actually read the link I posted?

New Member

Re: Span port limit

I think I posted second question too early, I got the link, thank you for your help

Hall of Fame Super Bronze

Re: Span port limit

Glad to help

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