RE: When do we require reflector port in RSPAN

From: Scott Morris (smorris@ipexpert.com)
Date: Thu Jun 21 2007 - 14:36:20 ART


3550's have interface-specific ASICs (which are needed to speed things up)
so you need to associate an interface to "borrow" those.

3560's and 3750's have a different architecture where the ASICs are
chassis-based and therefore not needed to be specifically allocated.

HTH,

 
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
VP - Technical Training - IPexpert, Inc.
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-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Eric
Dobyns
Sent: Tuesday, June 19, 2007 10:52 PM
To: 'Salau, Yemi'; 'Narbik Kocharians'; 'CCIE SG'
Subject: RE: When do we require reflector port in RSPAN

They were made that way, son.

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Salau, Yemi
Sent: Tuesday, June 19, 2007 4:40 AM
To: Narbik Kocharians; CCIE SG
Subject: RE: When do we require reflector port in RSPAN

WHY DO 3550s require reflector ports and 3750s don't?

Before you bombard me, I know that 3550s do require reflector port and 3750s
don't ... That's what Cisco told us, but what is the technical
reason????????

Many Thanks
 
Yemi Salau

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Narbik Kocharians
Sent: 18 June 2007 21:03
To: Eric Dobyns
Cc: premkumar somasundaram; ccielab@groupstudy.com
Subject: Re: When do we require reflector port in RSPAN

3550s definitely do need the reflector ports

On 6/18/07, Eric Dobyns <eric_dobyns@yahoo.com> wrote:
>
> I believe 3550s require a reflector port.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> premkumar somasundaram
> Sent: Wednesday, June 13, 2007 7:14 AM
> To: ccielab@groupstudy.com
> Subject: When do we require reflector port in RSPAN
>
> Group.
> As my understanding , RSPAN is used to montior the traffic when the
source
> port is connected to say switch A and destination port is conneced to
> Switch B. The configuration is as follows.
>
> Switch A
>
> vlan 100
> remote-span
>
> monitor session 1 source vlan 150
> monitor session 1 destination remote vlan 100
>
>
> Switch B
>
> vlan 100
> remote-span
>
> monitor session 1 source remote vlan 100 monitor session 1 destination
> port fast0/6
>
> I believe the above configuration is right. Do we require reflector
port.
> If
> yes when do we require it.
>
>
> Thanks
> Prem
>
>



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