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RE: NBAR question posted 06/03/2004
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Ken,

	The paragraph you're quoting doesn't mention the
protocol-discovery command.  It mentions that NBAR is started by using
the service-policy command, which is correct.  Protocol-discovery gives
you a nice breakdown of protocol distribution on an interface, using 'sh
ip nbar protocol-discovery'.  Or via SNMP, I recently heard.  But it's
not needed for the class-map, policy-map, and service-policy commands to
use NBAR.  Enabling either the service-policy or the protocol-discovery
will start the NBAR process, which you can see via the resulting 1 mbyte
or more drop in available memory right off the bat. 


Chuck Church
Lead Design Engineer
CCIE #8776, MCNE, MCSE
Wam!Net Government Services - Design & Implementation Team
13665 Dulles Technology Dr. Ste 250
Herndon, VA 20171
Office: 703-480-2569
Cell: 703-819-3495
cchurch@xxxxxxxxxxxxx
PGP key:
http://pgp.mit.edu:11371/pks/lookup?op=index&search=cchurch%40wamnetgov.
com

-----Original Message-----
From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx] On Behalf Of
Kenneth Wygand
Sent: Wednesday, June 02, 2004 9:34 PM
To: Messina, John V.; Peng Zheng; ccielab@xxxxxxxxxxxxxx
Subject: RE: NBAR question

According to page 185 of Odom's DQOS Exam Certification Guide by Cisco
Press, "ip nbar protocol-discovery" is required on the interface...
 
<snip>
"The connection between NBAR and CB marking, or any other MQC tool, is
through the match protocol class-map subcommand. An MQC tool can include
the match protocol command under a class-map command. To do so, NBAR
must be enabled on the same interface on which the class map is
indirectly enabled through the service-policy interface subcommand."
</snip>
 
Any thoughts?
 
Ken

	-----Original Message----- 
	From: nobody@xxxxxxxxxxxxxx on behalf of Messina, John V. 
	Sent: Wed 6/2/2004 7:48 PM 
	To: Peng Zheng; ccielab@xxxxxxxxxxxxxx 
	Cc: 
	Subject: RE: NBAR question
	
	

	no, protocol discovery is not required.
	
	
	
	        -----Original Message-----
	        From: Peng Zheng [mailto:zpnist@xxxxxxxxx]
	        Sent: Wed 6/2/2004 6:13 PM
	        To: ccielab@xxxxxxxxxxxxxx
	        Cc:
	        Subject: NBAR question
	       
	       
	
	        When I want to use match protocol under class-map, Is
	        it necessary to config ip nbar protocol-discovery?
	       
	        Thanks.
	       
	       
	       
	              
	                      
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