Hi,

You can use Cisco Works to monitor traffic through a Cisco router. In particular, you can use the QoS Policy Manager (QPM) to monitor and manage traffic (to the extend of protocols, UDP,and TCP ports)

cheers.

On Wed, Sep 30, 2009 at 9:11 AM, Steve Muchai <smuchai@gmail.com> wrote:
On Tue, Sep 29, 2009 at 5:30 PM, lydiah ndirangu <lyndirangu22@gmail.com> wrote:
> is there any way of checking the exact traffic passing through a cisco router.

Yes; do you want to see the total traffic passing through, or a
breakdown of traffic by protocol? For the first one, check out mrtg
and it's derivatives - purely SNMP, so it's supported by your router
for sure; for the second, check out NetFlow - if your router supports
it.

If you could give some few details about your setup (router model/IOS
version, whether you have a box that you can use for monitoring, and
whether that box runs *nix or Windows) you'll get a heap of possible
solution from the skunks.

BR,
S
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