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New Member

High input rate & monitoring of router.

Hi all,

I have problem sometimes to

resolve who congested our interface on

router. It is seen on 5 minute input rate or 5 minute output rate on given interface.

So my question is how I can resolve who

through TCP or UDP and which IP address

do connections through router with which

bandwith consumption?

Any suggestions?




Re: High input rate & monitoring of router.

Best way I think would be using a packet shapper software.

but for routing resources, I've only done it in flooding situations, where I could easly catch the problem with something like

debug arp

debug ip icmp

debug ip udp

debug ip packet

logging to vty , of course.

But I bet somebody else have better ideas.



Re: High input rate & monitoring of router.

You can run IP accounting and you will get fairly good data. Depending on your router and how big a buffer you define it may cause a issue with memory or cpu. Most the time it will run with no impact.

You can also put "ip route-cache flow" in the interfaces and use "show ip cache flow" to get your information. This method is more real time and you must issue the command when you are having the problem. The data is only kept a very short period of time.

New Member

Re: High input rate & monitoring of router.

Hi Tim,

thanks for advice. How should I turn on IP

accounting? On the other hand when I turn route-cache

on interface I see traffic but where I can determine

which traffic consume what bandwith?

Do you know how Cisco routers create 5 min rate of interface?



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