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Enthusiast

Can also a SPAN port passes normal traffic while it monitors other ports?

Hello All,

 

I would like to know if a SPAN (mirroring) port can also passes users' traffic. I know that its being busy monitoring those traffic but can it also work as normal access port. Is there a feature in the new IOS to configure a port to act both access and monitoring port in the same time?

 

Appreciate your help. :)

5 REPLIES 5
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HiYes, you can use the

Hi

Yes, you can use the 'ingress' keyword on the monitor destination command.

Regards

Aaron

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
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Cisco Employee

Hi,SPAN ports that monitor

Hi,

SPAN ports that monitor traffic cannot forward packets. There is no feature that enables the span destination port to behave as a normal access port too. Please see the link below for more details.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_52_se/configuration/guide/3750scg/swspan.html#wp1036749

HTH,

Roopa

 

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Enthusiast

Hi,Thanks but what the

Hi,

Thanks but what the ingress keyword that Aaron talked about does?

Thx

Highlighted
Cisco Employee

The "ingress" keyword in the

The "ingress" keyword in the monitor session is to monitor the incoming packets on the interface and to forward it to the destination interface.

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_52_se/configuration/guide/3750scg/swspan.html#wp1260596

HTH,

Roopa

Highlighted

Hi RoopaIt's not.the 'rx' 'tx

Hi Roopa

It's not.

the 'rx' 'tx' and 'both' keywords specify which direction of traffic is monitored.

'ingress' - well.. read the manual.

Mr Turbo_Engine26 - if in doubt, test it or google what is suggested.

Aaron

Aaron Please remember to rate helpful posts to identify useful responses, and mark 'Answered' if appropriate!
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