[mrtg] Re: NBAR

[Trent Melcher]

Greg

I just turned on nbar(ip nbar protocol-discovery)  on all my router
interfaces,  I Im running a 2600 with 2Serial T1 interfaces and 1
FastEthernet interface,  I currently graph cpu utilization, so I will let it
run for a day and report back the cpu statistics.

Trent

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch]On
Behalf Of Greg.Volk at edwardjones.com
Sent: Thursday, February 19, 2004 7:21 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: NBAR


>
> Has anybody had a play with this:
>
>
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122newft/122
t/122t15/ftpdmib.htm
>
> I have been asked to see once its implemented on our routers can MRTG
> identify protocols so traffic can be classified appropriately
> for Quality of
> Service purposes?
>
> Can anybody help at all ?
>

This is the first time I've heard of NBAR, and it's been
around since 12.0(5)XE2! I sure feel out of the loop. ;)

>From the above URL...

>>NBAR is a classification engine that recognizes a wide
>>variety of applications, including web-based and other
>>difficult-to-classify protocols that utilize dynamic TCP/UDP
>>port assignments. When an application is recognized and
>>classified by NBAR, a network can invoke services for that
>>specific application. NBAR ensures that network bandwidth
>>is used efficiently by classifying packets and then applying
>>Quality of Service (QoS) to the classified traffic.

This just sounds too cool. What is the router overhead? It's
got to be high if it's doing payload inspection. I want
to see a pre and post implementation router-cpu graph.


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