Anyone else having a issue when logged in the client side with 5.0 routeros? On the client side I set the data rates to the max rate of 24mbps and the customer still uses 48mbps. Without NV2. If I set the data rates it works. Dallas
I’m afraid we need a bit more info to understand your question..
Give a drawing and/or an explanation of the configuration or print of the config.
If I specify the data rates of 6mbps/9mbps/18mbps on the client radio. If I look at the registration. The client radio is still trying to use 54mbps data rates when I look at the registration data rates. Does this make sense?
Yes, but more info needed. Are both AP and Client MT-ROS units?
And the data rates you refer to. Is this tx or rx?
I have seen that when an AP has a set data rate of lets say all up to 24Mb some clients (nanostations) still show a tx connection rate of 52Mb.
I set the connection rate of these NS’s also to 24Mb and the strange reading is (off course) gone. Something similar could be happening with yours but reverse.
NV2 only works on mikrotik. I am talking about both rx and tx. OK. Here is what I have below.
AP:
supported-rates-a/g=18Mbps,24Mbps,36Mbps,48Mbps,54Mbps
basic-rates-a/g=18Mbps
Client:
supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps
basic-rates-a/g=6Mbps
I did a bandwidth test from the ap to the client.
RX is 36mbps
TX is 54mbps
What do you think?
In your first post your wrote “Without NV2”. But anyway…
Here is what I have below.
AP:
supported-rates-a/g=18Mbps,24Mbps,36Mbps,48Mbps,54Mbps
basic-rates-a/g=18MbpsClient:
supported-rates-a/g=6Mbps,9Mbps,12Mbps,18Mbps,24Mbps
basic-rates-a/g=6MbpsI did a bandwidth test from the ap to the client.
RX is 36mbps
TX is 54mbpsWhat do you think?
Three things:
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6, 9 and 12 on client will never be used since not set at the AP. And AP setting 36Mb never because client doesn’t support it. Data rate settings of both have to be the same. One unit can not connect (normally, hence my 2nd remark) with data rate not supported by the other unit.
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basic-rates always have to be the same on both units. Most advisable the lowest rate available. This is the rate at which both units tell each other on which rate the communication might run. To set it to lowest you guarantee that even under the harshest circumstances at least this rate can be maintained. If not, link is not even worth trying…
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I think the reason of your strange behaviour is that both units cannot settle on their supported rates since the basic rate is a mismatch. So they use whatever is available on since other end also doesn’t know what the deal is uses also what is been given him. My advice would first be to follow my first two suggestions and try again. If issue is the same make a suppout.rif of both units and send a support request mail to MT. Keep me updated.
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I understand. I since the aps does not support 54mbps why does the client still use it?
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I agree with you. NV2 had a issue with low data rates. Removing all data rates lower than 18mbps make the NV2 very stable. I guess I could put everything at default and see if they fixed that issue.
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I agree. Thank you.
NV2 issue with low data rates?
I can’t recall to have seen this is any post. I am following several NV2 threads because their have been, and probably still are some, issues of several natures. But problems with low data rates?
I do know someone that said nv2 performs better with one set data rate only where on 802.11 it is advisable to have always at least 3 set. The highest stable one, the second best for fall back “in case off” and the one supporting the basic rate.
I asked the question if in that nv2 scenario with one data rate the basic rate should be set the same but it’s not answered yet.
Dallas,
Is “rate-set=” default or configured ? Seems like it’s on default.
I am using configured.
In Nv2 wireless protocol network AP is telling what data-rates to use for RX/TX, data-rate settings on the client are ignored.
That makes total sense now. Are we going to be able to configure clients or is this done for a reason for efficiency? For the customers real far out. I am wanting to make sure they data rates are not changing the power. For example put the customers at 6/9/18/24mbps so the power level doesnt go below a certain value. Like 24dmb. If it goes to 36mbps then for example the power level goes to 17dbm which the customer flakes out at. This is no big deal because I can setup manual tx power and set the power limits. Thanks mikrotik.
If you have different data rates for different clients it will slow down the AP anyway because it will have to constantly change data rates as it talks to different clients. You are better off limiting your data rates on the AP side so it isn’t having to bump up and down with the rates.
You also need to be careful with manually setting your TX power because you can toast your wireless cards that way. To be safe you should either set TX power to default or card rates. With card rates you are setting the max TX power and MT will adjust the TX power for the upper modulation rates according to what the card calls for.
Chadd
With NV2 it shouldn’t slow down the ap because of slotting. Which is kinda neat. I got so much bandwidth now. I don’t care to loose a few megs lol. Yeah, I love NV2. Thanks for you opinion Chadd.