[mrtg] Re: monitoring bandwidth per protocol

[Sanjay Saxena - Visibility Products]

Netflow keeps track of all the communication happing and packs them off in
udp to destination. by writing a small udp port listener we can start
listening the flows and dump them in some db or flat file.

In Nbar we actually enable the top n per interface wise and then poll the
data through snmp. again the difference is snmp polling is far less in
volumes and netflow data will be huge in quantity.

based on requirement any one of the two can be used .
like if the interdepartmental billing is the need then u cant afford to miss
any single flow so take help of netflow .....if its just knowing the
distribution of the Application on any link then NBAR will do .


sanjay 

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch]On
Behalf Of jon.hartman at verizon.com
Sent: Tuesday, May 25, 2004 1:54 AM
To: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: monitoring bandwidth per protocol


So, between the two, Netflow & NBAR, whch is better? I suspect there's
advantages and disadvantages to each...

-Jon Hartman

-----Original Message-----
From: mrtg-bounce at list.ee.ethz.ch [mailto:mrtg-bounce at list.ee.ethz.ch] On
Behalf Of Masood Ahmad Shah
Sent: Friday, March 26, 2004 12:51 PM
To: Zeeshan Ahmed; Victor Souza Menezes; mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: monitoring bandwidth per protocol


yeah Zeeshan is right you can use ip nbar.

if your router did not support ip nbar then run cache flow on required
interface and get statistics via netflow or you can write your own expect
script  to get statistics from router. I'm sure you can find tool or
script via search on net that can be use to get cache flow statistics.
Rule of thumb if you have data u can generate graph :)

Best Regds,
Masood Ahmad Shah
Nexlinx
http://nexlinx.net.pk


----- Original Message ----- 
From: "Zeeshan Ahmed" <zeeshan at worldcall.net.pk>
To: "Victor Souza Menezes" <victor at tre-pb.gov.br>; <mrtg at list.ee.ethz.ch>
Sent: Thursday, March 25, 2004 11:21 AM
Subject: [mrtg] Re: monitoring bandwidth per protocol


> i do it in the way that i have enabled the NBR o my cisco router that 
> differentiate the traffic per protocol then i get stats throygh mrtg 
> from NBR.
>
> Regards
> Zeeshan Ahmed
> ----- Original Message -----
> From: "Victor Souza Menezes" <victor at tre-pb.gov.br>
> To: <mrtg at list.ee.ethz.ch>
> Sent: Thursday, March 25, 2004 2:31 AM
> Subject: [mrtg] monitoring bandwidth per protocol
>
>
> > Hi all,
> >
> > I'm running mrtg-2.10.13 on a Red Hat 9 system to monitor a router 
> > of my
> network
> > and it works fine.
> >
> > If i want to monitor, for example, the traffic on my network per
protocol
> , i
> > mean, TCP, X11, HTTP, ARP, POP, etc, what should i do??. I want to
> configure
> > mrtg to monitor my firewall and i have some doubts:
> >
> > ->Despite having the snmp agent running, do i have to make some
> modifications in
> > the snmpd.conf file??
> >
> > if someone have already done this before, please give me an example 
> > of
> your
> > conf file. And if you know too the name of a good mib browser for 
> > linux, please tell me.
> >
> > regards victor
> >
> > --
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