Copy traffic form one port to many other ports on switch

[Konri]

Hi.
My device sends data (ascii text) to other device using TCP on port 9999.
Is it possible to copy this data to few other devices with different ip addresses (on the same network port or different port) on the same switch?
How to configure this?

Regards
K

 

[VinceWhirlwind]

Can your device send to a multicast address?

 

[tjbradford]

more of a broadcast thing surly?
working like net send ?

 

[burtsbees]

It's called SPAN/RSPAN, sometimes referred to as "port mirroring"...

http://www.ciscozine.com/2008/09/29/how-to-analyze-traffic-with-span-feature/

That's a comprehensive link, easy to configure.

Burt

 

[VinceWhirlwind]

Configuring those "few other devices"' switchports to port mirroring does two things which I think run counter to his scenario:
- the devices no longer have an IP connection
- capturing the data won't give him his ASCII text, just a big pile of packets.

The problem with a broadcast is that he has stated this is TCP traffic, so only the established connection will get it.

 

[VinceWhirlwind]

Configuring those "few other devices"' switchports to port mirroring does two things which I think run counter to his scenario:
- the devices no longer have an IP connection
- capturing the data won't give him his ASCII text, just a big pile of packets.

The problem with a broadcast is that he has stated this is TCP traffic, so only the established connection will get it.