Switch Port Mirroring(span)'s questions？

[langog]

0.does span have any standard ,like ip's is rfc791？

1.if i use a low bandwith port to monitor a high port ,what result i will get?

2.how dose span influence the mathcine perfomance?

[lgijssel]

0. no, this is a vendor-specific solution

1. you will get congestion on the low-bandwidth port.

2. the duplicate packets will consume resources just as normal traffic does.

Regards,

Leo