Bandwidth management based on time

tomaifauchai · February 2011

Hi guys,

Is there a way to manage bandwidth restrictions based on time?

Example:

Let say i want one link to use 100mb/s only 5% of the time per month, and 10mb/s the remaining 95% of the time.
What should i use to reproduce this on a 3560 switch?

Thanks Tom

mikej412 · February 2011

Creating Time-of-Day QoS Service Policies - Cisco Systems

tomaifauchai · February 2011

Yeah thanks Mike!
This is the static way to define time-ranges but i wonder if is there a dynamic way of restricting it by some rules like whenever the link goes over 10mb, a time counter increase and then when you reach 2160 minutes (5% of the month), the link become policed to 10mb.

Maybe some SNMP management could do this?
Sometimes, customers asking weird stuff! For my part, i would throw them a fixed rate for X days, and then another rate for the balance of the month.

mikej412 · February 2011

Okay.... maybe toss in IP SLA and EEM.

DPG · February 2011

It sounds like your customer has a 10Mbit commitment on a 100Mbit port and is billed for overages at the 95th percentile. They need to either buy more bandwidth or cap their port at 10Mbit.

tomaifauchai · February 2011

It look complicated to me Mike, sounds like advanced programmation, maybe i'll read later about it thanks!

Now, imagine i have 3 separate networks behind a nat overload and i must limit the 3 networks to a certain amount of bandwidth per second. Is there any other solutions than policing the 3 nat inside interfaces with service-policy output when the 3 clients download ?

I've thought i could police the WAN input interface, but since the packets entering this interface doesn't know about NAT IP's destination addresses, it won't work.
The major drawback of policing the output of NAT interfaces, is it'll probably fill queues and much drops will probably occurs.

What do you think?

Bandwidth management based on time

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