We are using cisco switches like as 3750, 6500 etc. So there is no fairqueue. On 26 November 2010 09:43, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
On Fri, 26 Nov 2010, Sergey Voropaev wrote:
We use a several connections to the financial providers. This connections
are low bandwidth (up to 2 Mbps). This connections used by a number of front end services from a nubmer of departments and we could not differentiate its and configure QoS. But from time to time some one produce an extremely high traffic spikes (less than 30 seconds) without congestion avoidance mechanisms. Our task - is to find such applications and report to management and developers a problem. Also if we'll be aware about it we could configure QoS.
What kind of queuing are you using?
It sounds like configuring fair-queue on the interface (if your platform supports that, usually the ones with 2M interfaces do), it should help with the problem you're describing.
If you have CPU to spare, configure fair-queue everywhere you can where you don't have a "better" QoS-configuration in place. It really solves a lot of the problems people are seeing with FIFO and mixed traffic.
-- Mikael Abrahamsson email: swmike@swm.pp.se