Real-time Bandwith report

monitoringnetworking

I need to find a solution to monitor, in real-time, the traffic currently used by an office of about 25 peoples. We already have Zenoss for SNMP monitoring, but I'm looking more at something that would tell me who is using most of the bandwidth "right now". Something similar to this interface: ClearOS Network Traffic Report

Since ClearOS has this functionality, it must not be very hard to reproduce, yet I can't seems to find it in things like PFsense or in Cisco Small business routers.

Any suggestions?

Best Answer

Here are two other ways to accomplish this:

Use PRTG in conjunction with a switch port monitor, if your switch supports port monitoring. You would configure the port to which PRTG is connected to monitor the port that links the switch to the router and create a packet sniffing sensor in PRTG. This is what I do in my office.
Use Netflow in conjunction with a Netflow collector, if your switch or router supports Netflow. This is what I do in my datacenter.

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Real-Time Monitoring of Windows Servers and Services

I would seperate out the charting/display from the montioring/alerting piece. You haven't said how many object you have. For most shops I'd write a powershell script to get the counters I want and pipe the output to powergadgets and for small shops use polymon to monitor the windows stuff and groundwork to monitor the rest. In a larger environment (30+ servers) I'd take a look at System Center Operations Manager for monitoring and alerting. You have to realize howver that SCOM is NOT just monitoring. It's designed to correct problems and ensure business service, unlike most monitoring software that only cares about server counters. Other options would be tivoli or openview.

Router – Monitoring router bandwidth usage via Nagios and SNMP

I did this with a cron script, stores current value in a temp file then next time uses it to calculate bandwidth utilization since last run.

#!/bin/bash

email_address=""
router_ip=""

# 80% BANDWIDTH [ (384000bps) 48,000Bps ] - 20% = 38,400 Bps
alertBW="76800"

lastBWFile="/var/log/ciscoGW.log"
lastBW=`cat $lastBWFile | awk '{print$2}'`
lastTime=`cat $lastBWFile | awk '{print$1}'`

curBW=` snmpget  -c snmap_name -v 1 $router_ip IF-MIB::ifOutOctets.2  | awk '{print$4}'`

let diffBW=$curBW-$lastBW
#echo "Diff BW: $diffBW"
timeNow=`date +%s`
let diffTime=$timeNow-$lastTime
let alertBW=$alertBW*$diffTime

echo "$timeNow $curBW" > $lastBWFile

if [ $diffBW -gt $alertBW ]; then
#       echo "Over limit!"
        echo "Bandwith used over $diffTime seconds: $diffBW" | mail -s "BANDWIDTH OVER LIMIT!!!!" $email_address
fi

Since I was more interested in actual peaks I've since moved to using rrdtool:

#start 15 minutes ago
#end 5 minutes ago since rrdtool queries every 5 minutes 
rrdtool fetch $FROM MAX -s -900 -e -300

Best Answer

Related Solutions

Real-Time Monitoring of Windows Servers and Services

Router – Monitoring router bandwidth usage via Nagios and SNMP

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