seeing router traffic

[tapp30316]

IS there a command to track router traffic. I don't need to see what interfaces are up, or connected. But just to verify that traffic is indead passing across router.

[Jan Nejman]

You can use netflow technology. See show mls ip or show mls netflow ip commands. Or if you want long-term monitoring you can use any netflow monitoring software. See http://www.cisco.com/go/netflow and commercial or freeware partners section.

Regards,

Jan Nejman

Caligare Co.

http://www.caligare.com

[Collin Clark]

Check out NBAR too. If you just need to verify traffic is passing look at ip accounting, or show interface.

HTH and please rate

[tapp30316]

with using the show interface its set to 5 mins. Is there a way I can increase the time or clear it so I can review the interface again from scratch

[Collin Clark]

You can clear the counters with the following command.

clear counter

Example:

SWI4506-1#clear counters gigabitEthernet 2/6

Clear "show interface" counters on this interface [confirm]

SWI4506-1#

HTH and please rate

[sundar.palaniappan]

Antonio,

There are many ways to check whether traffic is passing through an interface as explained by previous posters. Looking at the interface statistics which would display 5 min input/output rate is one way to check it. I understand your concern that this isn't the closest to real time traffic. The IOS does allow you to lower the display interval to as low as 30 seconds and this is the closest you can get to real time traffic. The command to set the interval to 30 seconds is 'load-interval 30' under the interface mode.

HTH

Sundar