From: Scott Morris (swm@emanon.com)
Date: Thu Nov 10 2005 - 12:11:23 GMT-3
I've never tried mixing and matching, but you're correct.... It would seem
the best decision to do a like-to-like port type.
Scott
-----Original Message-----
From: Dennis J. Hartmann [mailto:dennisjhartmann@hotmail.com]
Sent: Thursday, November 10, 2005 10:00 AM
To: swm@emanon.com; 'Chris Cole'; milo_az@yahoo.com; 'Mike Flanagan'
Cc: 'Cisco certification'
Subject: RE: Trouble configuring RSPAN
Very interesting. I would imagine that the redirector port has to
be the same port type as the monitor source since different port types use
different ASICs (e.g. If I'm asked to configure RSPAN on one of the GigE
ports, I better use the other GigE port as a redirector port.
For those of you that may be curious, the Fast Ethernet ports on the
switches use COIL ASICs (there's many generations). The Gigabit Ethernet
ports use PINNACLE ASICs (many generations as well).
Sincerely,
Dennis J. Hartmann
White Pine Communications
dh8@pobox.com
CCSI#23402 / CCVP / CCIP / CCNP
Cisco Optical, VPN & IDS Specialist
MCSE
-----Original Message-----
From: Scott Morris [mailto:swm@emanon.com]
Sent: Thursday, November 10, 2005 9:03 AM
To: dh8@pobox.com; 'Chris Cole'; milo_az@yahoo.com; 'Mike Flanagan'
Cc: 'Cisco certification'
Subject: RE: Trouble configuring RSPAN
No, the reflector port is a port near to the source of the RSPAN. The ASICs
will be commandeered in order to reduce the amount of processing done on the
originating switch. That port will be rendered useless to usability.
So it's just a port on the originating switch. It is NOT the source,
destination or a trunk port in between.
HTH,
Scott
-----Original Message-----
From: Dennis J. Hartmann [mailto:dennisjhartmann@hotmail.com]
Sent: Thursday, November 10, 2005 8:16 AM
To: 'Chris Cole'; milo_az@yahoo.com; 'Mike Flanagan'; 'Scott Morris'
Cc: 'Cisco certification'
Subject: RE: Trouble configuring RSPAN
Am I correct in saying that the reflector-port is the
target/destination interface in which the sniffer/network monitoring device
is attached? I understand that this is occuring over a VLAN and the
destination can be multiple hops away, but it's unclear to me whether the
reflector-port is the final destination or the trunk uplink. I "believe"
it's the "final" destination, but I thought I would ask.
-Dennis Hartmann
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Chris Cole
Sent: Wednesday, November 09, 2005 1:14 PM
To: milo_az@yahoo.com; Mike Flanagan; Scott Morris
Cc: Cisco certification
Subject: RE: Trouble configuring RSPAN
The Catalyst 2970, 3560, and 3750 switches do not require configuration of a
REFLECTOR port when configuring an RSPAN session.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
milo_az@yahoo.com
Sent: Tuesday, November 08, 2005 3:51 PM
To: Mike Flanagan; Scott Morris
Cc: 'Cisco certification'
Subject: Re: Trouble configuring RSPAN
Are you sure that's a 3550. I haven't seen one with a g1/0/10 interface.
Maybe a 3750 that doesn't require a reflector port?
Mike
Mike Flanagan <mikenoc@mindspring.com> wrote:I am running 12.1(19)EA1d maybe
its an IOS thing ?
On Nov 8, 2005, at 10:03 AM, Scott Morris wrote:
> Hmmmm...
> emanon-3550-1(config)#monitor session 1 destination remote vlan 101 ?
> reflector-port Remote SPAN reflector port
>
> What version are you running? I'm running 12.1(20), and that's still
> relatively old.
>
> Scott
>
> _____
>
> From: Mike Flanagan [mailto:mikenoc@mindspring.com]
> Sent: Tuesday, November 08, 2005 10:00 AM
> To: swm@emanon.com
> Cc: 'Cisco certification'
> Subject: Re: Trouble configuring RSPAN
>
>
> I figured the command was needed but I just do not see the option to
> specify the reflector port.
>
> SW1(config)#monitor session 1 destination ?
> interface SPAN destination interface
> remote SPAN destination Remote
>
> SW1(config)#monitor session 1 destination SW1(config)#monitor session
> 1 destination ?
> interface SPAN destination interface
> remote SPAN destination Remote
>
> SW1(config)#monitor session 1 destination SW1(config)#monitor session
> 1 destination remote ?
> vlan Remote SPAN destination RSPAN VLAN
>
> SW1(config)#monitor session 1 destination remote vla
> SW1(config)#monitor session 1 destination remote vlan 101 ?
>
>
> SW1(config)#monitor session 1 destination remote vlan 101
>
>
>
>
>
>
>
>
> On Nov 8, 2005, at 9:49 AM, Scott Morris wrote:
>
>
> How about a few ?'s when setting up the monitor session destination
> command line?
>
> _____
>
> From: Mike Flanagan [mailto:mikenoc@mindspring.com]
> Sent: Tuesday, November 08, 2005 9:40 AM
> To: Scott Morris
> Cc: 'Cisco certification'
> Subject: Re: Trouble configuring RSPAN
>
>
> SW1 is the has the source port that I want SW2 to be able to view
> traffic from. The source port is 1/0/1. I am definitely confused on
> the reflector port. What I want to so is monitor traffic from port
> 1/0/1 to a port on sw2.
> From reading what the reflector port does it "SPAN traffic from the
> sources is copied onto the RSPAN VLAN through a reflector port and
> then forwarded over trunk ports that are carrying the RSPAN VLAN to
> any RSPAN destination sessions monitoring the RSPAN VLAN" So I think I
> need to add the reflector port command using the same interface 1/0/1
> instead of 1/0/10. But the problem is the switch is not allowing me to
> add the reflector port command.
> So I am sure I am missing something just do not know what it is.
>
> Thanks,
>
> Mike F.
>
>
>
> On Nov 8, 2005, at 9:02 AM, Scott Morris wrote:
>
>
> Reflector-port is a parameter specified on the source-side of the
> Remote spanning session. It's not a vlan-oriented command.
>
> HTH,
>
> Scott
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Mike Flanagan
> Sent: Tuesday, November 08, 2005 8:57 AM
> To: Cisco certification
> Subject: Trouble configuring RSPAN
>
> Looking at the doc cd when configuring RSPAN you are to use the
> reflector-port command. I am not seeing this as an option on my
> switch. Is this needed to make this work? I just added the remote-
> vlan instead since that is the only option I had. I am running
> 12.1(19)EA1d
>
>
> Thanks,
>
> http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12225sec/
> 3550scg/swspan.htm
>
>
> SW1#conf t
> Enter configuration commands, one per line. End with CNTL/Z.
> SW1(config)#vlan 101
> SW1(config-vlan)#remo
> SW1(config-vlan)#remote-span
> SW1(config-vlan)#end
> SW1#
>
> SW1(config)#monitor session 1 source interface gigabitEthernet 1/0/1
> both SW1(config)#monitor session 1 destination remote vlan 101 ?
>
>
> SW1(config)#$sion 1 destination remote vlan 101 reflector-port
> gig1/0/10 monitor session 1 destination remote vlan 101 reflector-port
> gig1/0/10 ^
>
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