Re: Reflector port RSPAN

The idea is that the SPAN session needs an ASIC to copy the traffic
(with the same or higher bandwidth capacity). The 3550's hardware
design is that all ASICs have a dedicated port assigned, which means
that you need to specify which ASIC the SPAN session can use (based on
port number).
The 3560 and 3750 have a different hardware design. All ASICs are part
of the chassis/backplane so the SPAN session can dynamically pick a
free ASIC for his use.

When choosing a reflector port, don't try to use a FastEthernet to
monitor a Gig link :-) the other way around is possible though.

Rick Mur
CCIE #21946 (R&S)
CCNP, CCIP, JNCIA-ER, MCSE
rick_at_rickmur.com

On 21 apr 2009, at 17:26, Jared Scrivener wrote:

> Put simply, the 3550 needed to borrow an ASIC from one of the physical
> interfaces in order to "reflect" or copy traffic onto the remote
> vlan, due
> to the hardware design of the 3550. This is no longer the case with
> the
> 3560, due to a different hardware design.
>
> Cheers,
>
> Jared Scrivener CCIE3 #16983 (R&S, Security, SP), CISSP
> Sr. Technical Instructor - IPexpert, Inc.
> Telephone: +1.810.326.1444
> Fax: +1.810.454.0130
> Mailto: jscrivener_at_ipexpert.com
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf
> Of
> Salah ElShekeil
> Sent: Tuesday, 21 April 2009 10:57 AM
> To: Cisco certification
> Subject: Reflector port RSPAN
>
> Hi,
>
> what is the use of "*reflector port" in RSPAN? *
> **
> **
> SE
>
>
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Received on Tue Apr 21 2009 - 18:04:33 ART