From: Petr Lapukhov (petrsoft@gmail.com)
Date: Fri Apr 07 2006 - 13:57:52 GMT-3
Alexei, I checked RSPAN on my lab.
Tried both ways: with RSPAN vlan on reflector port,
and without any VLAN on reflector.
Both configurations worked :) Verified with bunch
of ping packets :)
HTH
Petr
2006/4/7, Hooman Parta <hooman@voipsol.com>:
>
> It is going to use ASIC on the switch board so you do not need to have it
> connected and as you are defining that VLAN as RSPAN, there is no need to
> assign it any where. If it does, it would be some where on the documetns.
> I
> can not find any where. Document CD has a detail configuartion guide on
> this.
>
>
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225seb/scg/swspa
> n.htm#wp1129034
>
>
> I will test it on my LAB and let you know for sure.
>
> -----Original Message-----
> From: Alexei Monastyrnyi [mailto:alexeim@orcsoftware.com]
> Sent: Friday, April 07, 2006 9:56 AM
> To: Hooman Parta
> Cc: 'Schulz, Dave'; 'Nick Griffin'; 'Faryar Zabihi (fzabihi)'; 'Roberto
> Fernandez'; ccielab@groupstudy.com
> Subject: Re: What is a Reflector-Port on RSPAN ?
>
> he doesn't say about reflector port settings... I mean regarding specific
> I
> asked....
>
> or do you, Scott?
>
> on 07/04/2006 16:49 Hooman Parta wrote:
> > Check Scott's Audio series, it is one of the best. You will learn it
> > within 30 minutes.
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of Schulz, Dave
> > Sent: Friday, April 07, 2006 9:04 AM
> > To: Alexei Monastyrnyi; Nick Griffin
> > Cc: Faryar Zabihi (fzabihi); Roberto Fernandez; ccielab@groupstudy.com
> > Subject: RE: What is a Reflector-Port on RSPAN ?
> >
> > The reflector port just needs to be any unused port. The state of the
> > port should not be an issue, since just the ASIC of the port is used.
> > Anything connected to the port will be disconnected.
> >
> >
> > Dave Schulz,
> > Email: dschulz@dpsciences.com
> >
> >
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> > Of Alexei Monastyrnyi
> > Sent: Friday, April 07, 2006 3:53 AM
> > To: Nick Griffin
> > Cc: Faryar Zabihi (fzabihi); Roberto Fernandez; ccielab@groupstudy.com
> > Subject: Re: What is a Reflector-Port on RSPAN ?
> >
> > Thanks!
> >
> > But still this reflector port needs to be on-line, connected, or?
> > Logically it shouldn't require that since all it needs is an ability
> > to use interface ASICs internally to reflect packets, which does not
> > imply that any link signal needs to be on the interface.
> >
> > Anyway, better try when I have two switches..
> >
> > Or Petr L,
> > I know you have 2 of 3550.... Could you please lab it up?
> >
> > Cheers,
> > A.
> >
> > on 07/04/2006 02:55 Nick Griffin wrote:
> >
> >> If I understand you correctly, no you do not need to enter "sw access
> >> vlan 44", the reflector port is used to loop the traffic your
> >> monitoring from your source port/vlan, out the interface, back in and
> >> onto the remote span vlan. Configuring the "reflector port"
> >> effectively disables it just as if were a local port used in a local
> >> span session. Unless I'm not catching what your throwing.
> >>
> >>
> >>
> >> Alexei Monastyrnyi wrote:
> >>
> >>> Thanks, but it didn't make things clear for me... sorry.
> >>> Let me put it tis way.
> >>> If RSPAN VLAN is 444, and reflector port is fa 0/21 - do I have to
> >>> do
> >>>
> >>> in fa 0/21
> >>> sw acc vlan 444
> >>>
> >>> Does this reflector port need to be in "connected" status?
> >>>
> >>> Very practical questions, cause you don't have a way to test this
> >>> config on real lab so you have to know what port to pick as a
> >>> reflector port and how this port should be configured. This part is
> >>> missing on DocCD section regarding RSPAN, ... or I cannot read it.
> >>>
> >>> I used a lot of SPAN sessions within one switch for my work, but
> >>> never RSPAN and in my current lab there is only one 3550 so cannot
> >>> lab it up.
> >>>
> >>> A.
> >>>
> >>> ----- Original Message ----- From: "Faryar Zabihi (fzabihi)"
> >>> <fzabihi@cisco.com>
> >>> To: "Alexei Monastyrnyi" <alexeim@orcsoftware.com>; "Roberto
> >>> Fernandez" <rofernandez@us.telefonica.com>; <ccielab@groupstudy.com>
> >>> Sent: Thursday, April 06, 2006 10:54 PM
> >>> Subject: RE: What is a Reflector-Port on RSPAN ?
> >>>
> >>>
> >>> 1. Any access ports configured into an RSPAN VLAN shall become
> >>> inactive and remain in that state until either the ports are
> >>>
> > configured
> >
> >>> into another VLAN or the VLAN is no longer an RSPAN VLAN.
> >>>
> >>>
> >>>
> >>> 2. Learning is disabled in RSPAN VLANs. This ensures that traffic is
> >>> flooded to all the trunk ports in the VLAN.
> >>>
> >>>
> >>>
> >>> 3. Trunk ports carry RSPAN VLAN traffic like that of any other VLAN.
> >>> VTP pruning supports pruning of RSPAN VLAN traffic on trunk
> >>>
> > ports.
> >
> >>>
> >>> 4. STP is enabled for all ports in the RSPAN VLAN, to support link
> >>> redundancy while avoiding loops.
> >>>
> >>>
> >>> Faryar Zabihi
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: Alexei Monastyrnyi [mailto:alexeim@orcsoftware.com]
> >>> Sent: Thursday, April 06, 2006 1:47 PM
> >>> To: Faryar Zabihi (fzabihi); Roberto Fernandez;
> >>>
> > ccielab@groupstudy.com
> >
> >>> Subject: Re: What is a Reflector-Port on RSPAN ?
> >>>
> >>> is that relevant if the reflector port belongs to that special
> >>> RSPAN VLAN?
> >>>
> >>> A.
> >>>
> >>> ----- Original Message -----
> >>> From: "Faryar Zabihi (fzabihi)" <fzabihi@cisco.com>
> >>> To: "Roberto Fernandez" <rofernandez@us.telefonica.com>;
> >>> <ccielab@groupstudy.com>
> >>> Sent: Thursday, April 06, 2006 9:01 PM
> >>> Subject: RE: What is a Reflector-Port on RSPAN ?
> >>>
> >>>
> >>>
> >>>> Good doc on rspan...there is a section on reflector-ports
> >>>>
> >>>>
> > http://www.cisco.com/en/US/products/hw/switches/ps663/products_configu
> >
> >>>> ra tion_guide_chapter09186a0080176332.html
> >>>>
> >>>>
> >>>> Faryar Zabihi
> >>>>
> >>>> -----Original Message-----
> >>>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> >>>> Behalf Of Roberto Fernandez
> >>>> Sent: Thursday, April 06, 2006 10:21 AM
> >>>> To: ccielab@groupstudy.com
> >>>> Subject: What is a Reflector-Port on RSPAN ?
> >>>>
> >>>> Friends,
> >>>>
> >>>> Quick question:
> >>>>
> >>>> What is a reflector-port in regards to the RSPAN configuration? I'm
> >>>> confused on this.
> >>>>
> >>>> Best Regards,
> >>>> Roberto
> >>>>
> >>>>
> >>>>
> > ______________________________________________________________________
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