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Se7enSins

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I was searching and reading through kb.kerio.com, but I didn't find explanations. I've got the problem in understanding how the 'bandwidth management and QoS' works. Moreover, I need to understand the work of balancing, particularly 'weight' parameter.

1) How reservation works in 'Bandwidth management and QoS', if I reserve 2 Mbit/s to some user, so that speed permanently occupies network capacity? So, that if my Internet speed is 6 Mbit/s and I reserve 2 Mb/sec from "User1", this speed is occupied and it doesn't matter if 'User 1' uses it, or not?

2) I have two providers to give us the Internet. So, I have 2 Internet-interfaces. Both use setting 'Use for Link Load Balancing', they have 'weight' parameter. What does it mean? How I can understand it and set the values? I didn't't find any concrete information on the forums, only assumptions. The thing is while reserving the speed, speed of the group 'Employees' is becoming 0.5 Mbit/s, although all in all the network is not occupied. It seems that reserved speed is permanently occupied.


Kerio Control
8.1.1 patch 1 build 1019

[Updated on: Mon, 05 December 2016 08:46]

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ksnyder

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Reservations are "on-demand" only. If "User1" is not active on the network, the bandwidth is not reserved for him/her. The full pipe would be available to other users/traffic.

The weight is a ratio of traffic for each interface. If WAN1 has a weight of 1 and WAN2 has a weight of 2, WAN2 will manage 2X the traffic of WAN1. One strategy for setting weights might be to do so based on any differences in the speeds of your two WAN connections. If WAN1 is 5Mbps and WAN2 is 10Mbps, a weight strategy like the one I just mentioned could be sensible.

Ken Snyder
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Samaya

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Can i ask. With regards to the example given above by ksnyder where WAN1 is 5Mbps and WAN2 is 10Mbps. Must the values be relative to "1"? Would the weighting system work equally is the Weight of WAN1 was actually 5 and WAN2 was 10? The ratio would be 5:10 which is technically the same as 1:2.... I've always struggled to get my head around this and the maximum bandwidth value you enter for each interface...
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Brian (GFI/Kerio)

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Yes, you can use 1:2 or 5:10 since the ratio is the same. It's up to you which values are easier for you to interpret, but the product will behave the same in either configuration.
Regarding the bandwidth value, this is necessary in case you are configuring policies that need to reserve bandwidth. For example, if you want to reserve 2 Mbps for some specific traffic and you told the product that you have a 10 Mbps link, Kerio Control will throttle all other flows to 8 Mbps. It cannot make this determination unless you've told it what is your bandwidth.

Brian Carmichael
Instructional Content Architect
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