Determing top talkers on the network

Unanswered Question
Aug 8th, 2007
User Badges:

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?


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Jagdeep Gambhir Wed, 08/08/2007 - 05:33
User Badges:
  • Red, 2250 points or more

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



nawas Wed, 08/08/2007 - 05:36
User Badges:


Unfortunately we are not using Radius, any other options?


ericgarnel Wed, 08/08/2007 - 06:33
User Badges:
  • Gold, 750 points or more

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 Wed, 08/08/2007 - 06:41
User Badges:
  • Green, 3000 points or more

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



wochanda Wed, 08/08/2007 - 06:44
User Badges:
  • Silver, 250 points or more

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:


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

ericgarnel Wed, 08/08/2007 - 06:55
User Badges:
  • Gold, 750 points or more

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

nawas Wed, 08/08/2007 - 07:45
User Badges:

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

wochanda Wed, 08/08/2007 - 15:55
User Badges:
  • Silver, 250 points or more

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.


This Discussion