Cisco 3800 ... Data size per day

[Fouad Ata]

Hi,

I have a cisco 3800 router on the top of my topology.

100% of the company traffic goes through this interface.

We are in process of putting a firewall before this interface.. and we need to know the size of data processed through this interface per day.

How can i do this on my router? how can i discover the data processed through this interface per day?

These data will help me chose the right size of my firewall.

Thx

[shillings]

You can take a snapshot of throughput via the router, but it sound like you really need to start building historical graphs of your 3800s port utilisation.

There is freeware called Spiceworks that can build very basic historical graphs, using SNMP poling of the device. It's very easy to setup, but you have to put up with the advertisements on the GUI when using the free version: -

http://www.spiceworks.com/

PRTG offers much more functionality and is quite easy to setup. They offer a 3-month trial or free version with limited functionality: -

http://www.paessler.com/check_bandwidth

There is also Cacti which can be installed on Unix/Linux, but it's not very intuitive to get installed and setup in my opinion, although pretty good once you're up and running. It's been a whilst since I used it, so perhaps its better now: -

http://www.cacti.net/

[Fouad Ata]

Thank you for your reply.

I was trying to get these info from within therouter itself.

I have SolarWind so seems that i should discover this interface within SolarWind and get a graph.

Thx for ur help.

[shillings]

I was trying to get these info from within therouter itself.

The best IOS has to offer is only available in 15.1T onwards. The following command can show the past 3 days utilsation via a graph (similar display to the one for CPU utilisation): -

     show interface g0/1 history 72hour [both | input | output]

[Leo Laohoo]

The best IOS has to offer is only available in 15.1T onwards. The following command can show the past 3 days utilsation via a graph (similar display to the one for CPU utilisation): -
 
 show interface g0/1 history 72hour [both | input | output]

Nice one, Simon!