Re: Cisco 3550 RSPAN - reflector-port What does it do?

RIPv2, that's if you are thinking 007.

On Sat, Aug 8, 2009 at 8:05 AM, S Malik <ccie.09_at_gmail.com> wrote:

> What kind of traffic can pass through a reflector port?
>
> On Sat, Aug 8, 2009 at 10:19 AM, Ramanpreet Singh
> <sikandar.raman_at_gmail.com>wrote:
>
> > As Dan said that In Catalyst 3550's, the ASICs belong to ports so you
> need
> > to borrow one. Now because it has been borrowed, it will leave underlying
> > port unable to be used.
> >
> > Whereas in 3560's, the ASICs belong to the chassis and are allocated on
> as
> > need basis, hence not needed to do any specific allocation.
> >
> > Following link is pretty helpful in understanding the operation in
> details.
> >
> >
> >
> http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008015c612.shtml
> >
> >
> > Thanks,
> > Raman
> >
> > On Sat, Aug 8, 2009 at 8:20 AM, <Keegan.Holley_at_sungard.com> wrote:
> >
> > > I actually had the same question, but its still unclear to me. Excuse
> me
> > > if everyone else figured this out. So the reflector port is just a
> port
> > > that surrenders it's ASIC to be used for RSPAN? If so does there need
> to
> > > be one for the source and the dest or just the entire rspan operation?
> > > Also, is it done only on the transit switches who carry only the RSPAN
> > > VLAN? In other words if the switch has either a source port or a
> > > destination port for the RSPAN does it automatically donate the ASIC
> from
> > > that port? Lastly, is this necessary for RSPAN to work or is this just
> > to
> > > avoid a performance hit? The reason why I ask is because it's not in
> the
> > > 12.4 configuration guide fro the 3560.
> > >
> > > Thanks all,
> > >
> > > Keegan
> > >
> > >
> > >
> > >
> > >
> > >
> > > Re: Cisco 3550 RSPAN - reflector-port What does it do?
> > >
> > > Danshtr
> > > to:
> > > Adrian
> > > 08/08/09 07:26 AM
> > >
> > >
> > > Sent by:
> > > nobody_at_groupstudy.com
> > > Cc:
> > > Cisco certification
> > > Please respond to Danshtr
> > >
> > >
> > >
> > >
> > >
> > >
> > > true
> > >
> > > Best regards,
> > > Dan
> > >
> > >
> > >
> > > On Sat, Aug 8, 2009 at 12:24 PM, Adrian <ccie2323_at_gmail.com> wrote:
> > >
> > > > so the port-reflector has to be any port that is not being used?
> > > >
> > > > On Sat, Aug 8, 2009 at 1:15 PM, Danshtr <danshtr_at_gmail.com> wrote:
> > > >
> > > >> As RSPAN is done in HW, the switch needs a port ASIC (something like
> a
> > > >> CPU).
> > > >>
> > > >> On 3560/2960/3750/4500/6500... the switch got a ASIC to do that, on
> > > 3550
> > > >> it doensn't. On 3550 the switch is using one of the real port's ASIC
> > to
> > > do
> > > >> the RSPAN job. That port will be unoperational as its ASIC is
> busy...
> > > >>
> > > >>
> > > >> Best regards,
> > > >> Dan
> > > >>
> > > >>
> > > >>
> > > >> On Sat, Aug 8, 2009 at 7:17 AM, Adrian <ccie2323_at_gmail.com>
> wrote:
> > > >>
> > > >>> Hi Experts,
> > > >>> What does reflector-port do in the RSPAN configuration
> > > for
> > > >>> 3550? This command is not available for the newer switches that i'm
> > > >>> familar
> > > >>> with, could anyone tell me what is that for? thank you.
> > > >>>
> > > >>>
> > > >>> Blogs and organic groups at http://www.ccie.net
> > > >>>
> > > >>>
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-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining.com
Sr. Technical Instructor
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