[f-nsp] Determining throughput

[Rolf Hanßen]

Hi,

I think there is a simple way to find out:
"300 second output rate: 253773564 bits/sec, 23796 packets/sec, 25.60%
utilization"
-> Your Foundry obviously thinks thats a 1GBit link if 250MBit ist 25%.

If that is a 1GbE link -> your lb shows wrong values (unless you found a
way to run more than 1GBit on that link ;))
If it is a trunk -> you need to add the values of all interfaces
If that's 10GBit Link -> open a ticket, the Ironware is buggy ;)

btw, you can reduce the 300 seconds to 30 seconds with "load-interval 30"
inside the interface config.

kind regards
Rolf

> On Tue, Feb 3, 2009 at 12:14 PM, Harald Michl <harald.michl at univie.ac.at>
> wrote:
>> Hi Chris,
>>
>> On 03.02.2009, at 20:00, Chris Cameron wrote:
>>
>>> I may have asked the wrong question. We have a number of utilities
>>> that watch our traffic come and go. My problem was that the router
>>> itself (through using 'show interfaces ethernet 1/1') is showing a
>>> value way off of our other methods of watching throughput.
>>
>> Perhaps you could specify "way off" a little bit more. Perhaps your load
>> balancer shows BYTE per second and the foundry BIT per second?
>> Which one is higher than the other and is there a constant factor
>> between
>> the values?
>
> Our load balancer has a graph showing outbound throughput over 1
> gigabit /second. Zenoss, using SNMP to the load balancer agrees.
>
> The Foundry shows:
>   300 second input rate: 42588967 bits/sec, 15505 packets/sec, 4.40%
> utilization
>   300 second output rate: 253773564 bits/sec, 23796 packets/sec,
> 25.60% utilization