Determing top talkers on the network

[nawas]

I have sup720s in my network and I want to determin top talkers on the network, can this be done by RMON on the switch and/or sup engine? If so does anyone have a configuration example?

Thanks.

[Jagdeep Gambhir]

Hi Nawas,

If you are using Radius then there is a software available that will give you customized reports of max talkers plus many other reports.

You can download its trial ver from

http://extraxi.com

Regards,

~JG

[nawas]

Hi

Unfortunately we are not using Radius, any other options?

Thanks.

[ericgarnel]

running 12.2.18 SXD7A on our sup720s and it doesn't support ip flow top-talkers like routers do. you can use an nms like nmis to run these reports though

[sundar.palaniappan]

If the switch is running CatOS image you can use the 'show top' command to view the top talkers on the network.

HTH

Sundar

[wochanda]

We support a feature called 'top-n reports' on the 6500 now, which allows you to collect statistics on your interfaces, and form a report about which interfaces are generating the most traffic. Of course, this tell you top interfaces, not top hosts.

If you need top hosts functionality, you have 2 options:

1. Enable Netflow with NDE. You will export your netflow records to some sort of collector which will tell you who the top talkers are.

2. Wait 1 month for 12.2(33)SXH native code to come out for the 6500, which will support the netflow top-talkers feature currently supported on routers.

Here is the link for top-n:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/topn.htm

NDE:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/nde.htm

Netflow top talkers documentation will come out when the code is released.

[ericgarnel]

Cool, looks like I am upgrading in a month or so, Thanks

[nawas]

Is there anything like this for CAT OS other than show top? our organization don't plan to move to native yet.

[wochanda]

You wont be able to get top-talkers, as 12.2(33)SXH will be native-only code. All you can do is implement netflow on the MSFC and use a collector to pick the top talkers.