MikroTik

I have twp XR2 (600mw 28db) card in an RB433.
a lot of times in a day the system go down.-
Pings to clients at less than 3kms. increase from 50ms to 1500-2000-3000- timeout..
Sometimes in one RX, sometimes in booth, sometimes the all system (including other ap no mikrotik).
I set the ack-timeout to 100.-
I read someone says to power down the TX power.
Actually it says:
1Mbps 28 [18]
2Mbps 28 [18]
5.5Mbps 28 [18]
11Mbps 28 [18]

Must I decrease the power? Wich will be a good value?

TIA. Excuse my english

Hi bochin,

I think you need to know if the problem is not traffic, high latency can indicate too many traffic
on your link or too low bandwidth avaliable, so check it first (traffic, CCQ and throughput).

Well, about the power... how is link signal str? In my opinion you will get a more efficient link
if your link remains a signal between -40 and -55, more than -40 you can saturate and less you can
get too close to noise floor.

Jorge

Hi, Thiele.
It isnt trafic.
I monitor at wireless / interfaces the trafic of two RXs and when the pings go 2000-3000-timeout the trafic is normal (the two rxx sum less than 1.5 MB).
Signal STR are from -46 to -66

Jorge? Are you spanish?

Thanks for answering..

Hi bochin,

I'm Brazilian and my first language is portuguese, sorry.

Your clients signal lvl is very good! Look if there are clients connected at low rates, like
1 and 2mbps, if yes try to force your AP to use only 5.5 and 11 and
watch if they can keep connected at high rates.

Other alternative is to try any other channels, maybe you are experiencing some
interference on your current channel or channels. Remember: when you are using 2.4Ghz and
you have antennas closer each other, try to not use adjacent channels like 1 and 2 or 5 and 6.
For example, if you use channel 1 on your first card, use something like channel 6 or greater
your second card.

Jorge

That is really going crazy.
I´m at a client station, now.
An Edimax with Signal Level Display.
The RSSI is ALWAYS 78(-43 dBm) (some times show 80).
ALWAYS.
When the ping is 10ms, and when is 3000 ms, and when timeout, the RSSI is always -43 dBm.

Does it means that there is NOT an interference problem?.-

Sometimes you can have a very good signal strength and very poor quality. Be sure you check the CCQ. You want the value as close to 100 as possible. Generally when your ping times get that bad, CCQ falls down below 20. Many factors affect CCQ, from interference to multi-path.

Eric