MikroTik

Hi,


I am using the following config: 2 sectors@17dBi, 12meters of LMR400, 2 miniPci R52, software: Mikrotik (leve 4)2.9.49 and P3@1000Mhz, 128MB Ram, Compact flash! I set-up channels 1 and 8 for each sector, there are about 20-25 users on each antenna, but the problem is that during evening there is a great ping, I tried to change, channnels, HW retries, reboot, reboot the cpe (cpe is based on 8186, like airlive, edimax, alfa etc).I mention that the traffic is not so heavy (about 3,8 Mbps on each radio), but I think that torrents and filesharing is the problem, and the number of connections created by them, but the traffic is not so heavy


Best regards,
R.

what about CCQ and CPE signal levels

Overall Tx CCQ is slow is varying from -45 up to 89, but the signal level is from -54 up to -80

i meant what is CCQ, but from CPE site, because this is actually CCQ

with such differense of signal levels i offer you
1. to add some more interfaces (with additional antennas, ofcourse), because a client with too weak signal (80 and above) may do the device (ap-bridge) to stop working propertly with other CPEs.
2. replace the device with more powerful one, e.g. sr/xr series.

Go to the Mikrotik Wiki and look up the bandwidth control.

Limit TCP connections to 100, and there is another to control QoS. It will limit the download speed after a certain amount is downloaded, controlling your torrent and general download traffic. New traffic, even from the same client, takes priority, and lowers priority for long term downloads, so no one will complain about ping or web browsing.

Limit TCP connections to 100...

obvious effect is good ping times, but hardly opening webpages (browsing). we tested it before at 120 connections, but because the effect above i removed all filters anywhere...
can you share a "good" number of connections to filter - good QoS on the one hand and good browsing on the other

I mention that the traffic is not so heavy (about 3,8 Mbps on each radio)

Do you use b or g modulation? This is actually high traffic for 802.11b. Look at wireless/registration table and check CCQ for each client, then figure out which clients have low CCQ and try to fix their equipment to get better signal and CCQ. And try to use g or b/g mode if possible.

I still have problems with great ping, for a while, I limited the traffic, but the need of greater speed is mandatory... Sometime I looked to graphics and it was really low but the ping was very high. I mention that I use b/g standard and I use channels 1 and 8 for the sectors

sometimes we oserved same problems. in this case we
1. replace cables or even connectors.
2. replace antenna root
3. replace ap w/less interface with better one or even with new one

It worked perfectly for 3 month, I checked the cables, antena... replaced computer, upgrade to 3.1 version and then downgrade to 2.9.50... I think there is a problem from my clients, they use alfa AWA 608 or airlive or edimax based on 8186. I mention that the ping is great even when the traffic is below 1Mbps, but when I turn off the internet the ping is fine! Probably there might be some viruses! I hope that this topic may help other people

try to do bandwidth test from cpe site, several customers in the same time.
limit the test, e.g. @ 2Mbps and analyse results. use only g.
have to be alright. if tests good. everything else seems to be only custommer's problem.

I found a clinet connected using an ovislink, the signal level was low and afer disconnecting it worked well for a while... but the ping is still huge sometimes

ah... sometimes - huge pings for a while - sound much fine.
ccq and signal levels from other cpe sites?

CCQ is over 70 at every cpe. I think that I will replace r52 or cm9 with something else

good idea, but... have you any filters to limit customers packets/connetction per second... every flood/overload makes ping to be bad

Total output <2Mbps
150 Tx , 150 Rx Pachets
I use only bandwidth limitations... so I don't think it is necessary to limit number the connections yet. Is it possible that a cpe from a custumer to generate such ping?

I have other problem, I get great delay even on lan but when I unplug the antennas the ping is getting to normal <1ms. I mention that the traffic is <700Kbps and the number of packets is <100 maybe 50. Please help

Limit TCP connections to 100...

obvious effect is good ping times, but hardly opening webpages (browsing). we tested it before at 120 connections, but because the effect above i removed all filters anywhere...
can you share a "good" number of connections to filter - good QoS on the one hand and good browsing on the other

I'm managing QoS and p2p for a local cable company, all of theirs is limited to 200 connections per client. The only issue I have with it is the support company managing the cable modems use 100 connections or so per cable modem.

The odd thing is using DD-WRT for my personal router, I've seen 25-50 active connections with several of us on the net at the same time. I'm having a hard time seeing 100 as a limit per CPE causing a problem. Linksys routers tend to choke if you hit near the 200 mark, so I'm thinking if the consumer level routers can't do more than 200 reliably, there's not much need to support more than that as a general rule. Of course, there are exceptions.

I have other problem, I get great delay even on lan but when I unplug the antennas the ping is getting to normal <1ms. I mention that the traffic is <700Kbps and the number of packets is <100 maybe 50. Please help

I wonder if you don't have a bad card, wireless or ethernet, somewhere in the system. It is possible you have a compatibility issue with a CPE or just network chatter. Are you running 802.11b or 802.11g? Channel bandwidth?

When I worked for the school system, I had several bad NIC's chatter and cause network problems, but that was before wireless days. I've not had to replace a lot of wireless cards aside from total failures, so I can't really say whether they chatter like some ethernet cards after taking a surge.

I don't think there is a bad card or ethernet, because when I connect my laptop or a cpe, it works perfectly... maybe a cpe is bad. I am waiting for suggestions, except replacing all the cpe