How to document the network's bandwidth utilization?

saidfrh18 · ‎03-21-2013

I have been assigned to find out the nature of the network's bandwidth utilazation. Is there a way to analyze traffic and breakdown the traffic on the ASA5510? Any advise is appreciated.

Collin Clark · ‎03-21-2013

I would suggest you deploy Netflow.

https://supportforums.cisco.com/docs/DOC-6114

You will need a Netflow collector. I like Manage Engine NFA. It comes with 2 free interfaces.

http://www.manageengine.com/products/netflow/

Hope it helps.

saidfrh18 · ‎03-21-2013

Thanks.

saidfrh18 · ‎03-21-2013

Collin,

I provided a static IP for my workstation as the source for collecting NetFlow data. Where on the Win 7 workstation will the data be found?

Thanks.

Collin Clark · ‎03-21-2013

You will need a 3rd party Netflow Collector. The link I provided above is a good app that you leave running on a server so you can go back in time and review data. If you want a real-time application check out the free Solarwinds application here-

http://www.solarwinds.com/register/registrationb.aspx?program=852&c=70150000000DrSQ

saidfrh18 · ‎03-21-2013

Will the data captured provide the % of bandwidth contained broadcast, email, voice, video data...?

Collin Clark · ‎03-21-2013

Yes it will and it will also tell you who is using those applications and how much bandwidth they are consuming!

saidfrh18 · ‎03-22-2013

How to enable SNMP on the ASA?

sh snmp group

groupname : public security model:v1
readview : def_read_view writeview :
notifyview:
row status: active

groupname : public security model:v2c
readview : def_read_view writeview :
notifyview:
row status: active

Is the following correct?

snmp-server host inside 192.x.x.x

snmp-server community SNMPCOMMUNITY

snmp-server enable traps snmp authentication linkup linkdown coldstart

saidfrh18 · ‎03-22-2013

Collin,

Where/how do you specify the community string/preshared password on Solarwinds Netflow Analyzer/Configurator?

Thanks.

Collin Clark · ‎03-22-2013

I don't have it in front of me. I'm sure it's in the help though.

Your SNMP config looks correct.