Yes, that is extrememly helpful!
Thanks so much!
*******************************
John C. Kelsey
DuBois Regional Medical Center
(: 814.375.3073
*: jckel...@drmc.org <mailto:jckel...@drmc.org>
*******************************
-----Original Message-----
From: Rohyans, Aaron [mailto:arohy...@dpsciences.com]
Sent: Wednesday, November 25, 2009 11:32
To: NT System Admin Issues
Subject: RE: Cisco RSPAN Question
Reflector-ports need to be configured to be just any empty port
on the 3550. RSPAN and SPAN use the ASIC of an available switch port
for 'processing power'. Thus, the port you pick *cannot* be in use as
the ASIC tied to it will be 'stolen' by the SPAN/RSPAN process. Newer
switches have a dedicated ASIC built-in to support SPAN/RSPAN sessions
without using a reflector-port, but the older switches require it.
Hope this helps!
Aaron T. Rohyans
Senior Network Engineer
CCIE #21945, CCSP, CCNA, CQS-Firewall, CQS-IPS, CQS-VPN, ISSP,
CISP, JNCIA-ER
DPSciences Corporation
7400 N. Shadeland Ave., Suite 245
Indianapolis, IN 46250
Office: (317) 348-0099
Fax: (317) 849-7134
arohy...@dpsciences.com
http://www.dpsciences.com/
From: Kelsey, John [mailto:jckel...@drmc.org]
Sent: Wednesday, November 25, 2009 11:26 AM
To: NT System Admin Issues
Subject: Cisco RSPAN Question
Ok, can one of you Cisco Gurus straighten me out please?
Trying to configure an RSPAN session between 2 devices on 2
switches. The 'source' PC (the one who's traffic I want to see) is on a
3550 switch on fa0/24. The 'destination' PC (my computer running a
packet capture) is on a 6509 switch on gi8/38. I've created the RSPAN
vlan and its propogated out via VTP.
My problem is, I'm not understanding what the 'reflector-port'
is. Is that just any empty port on the same switch as the source
computer? So my commands are below.
on the source switch
monitor session 1 source interface fa0/24 tx
monitor session 1 destination remove vlan 800 reflector-port
fa0/??
on the destination switch
monitor session 1 source remote vlan 800
monitor session 1 destination inteface gi8/38
Thanks all and have a happy Turkey Day!
*******************************
John C. Kelsey, MCSE
Senior Network Analyst
DuBois Regional Medical Center
(: 814.375.3073
2 : 814.375.4005
*: jckel...@drmc.org <mailto:jckel...@drmc.org>
*******************************
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