MikroTik

itchibahn

Currently, I have RB333 in bridged mode, with ether1 and wlan1 to bridge1 , and interface on DHCP to bridge1 . This all works where my clients get 192.168.15.* IP and can access Internet. Trying interface on DHCP to wlan1 gets an error. How do you set it so DHCP server will only be seen by wireless ...

itchibahn

I have problem where RB333 is assigning IP to everything in the network. Is there a way for it to assign IP ONLY to the wifi connecting to it? I currently have: DSL Modem --> Netgear Router --> Switch |--> RB333 |--> SBS 2008 |--> D-Link WiFi Router DSL Modem is bridged. Netgear Router (192.168.0.1/...

itchibahn

It's happening at all times. But the CPE stays connected, although can't brows from client's end and can't ping the CPE.

itchibahn

MY RB333 v4.2 is showing fluctuation in Tx/Rx Rate constantly. Some, but not all, the rates are changing from 54M, 48M, .. all the way down to 9Mbps, then goes back up, then cycles down every few seconds. And the whole time, the signal strength is -65 to -73 with similar Tx Signal Strength. It was f...

itchibahn

It's been 2 weeks since the change to 256k for RTS and 768 for frag. During the 2 weeks, only once the problem occurred, and it was solved by shutting down one of the 4 client's PC. Noticed that PC was running bittorrent. So the RTS change didn't stop the problem from occurring. Couple of other thin...

itchibahn

256 and 768.
You have to implement it in ALL the client radios otherwise it will only make things worse.

I've changed all NS2 and PS2 to your recommendation, just now.
I will post the result.
Thanks.

itchibahn

Thats the point, you want the client to get the AP's attention. In a congested number you lower the number. I tried again, of 10 clients, I lowered the two clients RTS and Frag to 512 / 1024. One client although I can ping him but I cannot access his NS2 remotely (this users uses torrents). 2nd cli...

itchibahn

it can also be bad signal and ccq on the client side that also brings down all clients connected to the same ap I do have one NS2 client, that has bad signal. I insisted that our service is not for him, but he just won't cancel. His average signal is usually around -80/-84 ccq 14/77%. But today, it...

itchibahn

Doesn't the smaller packet size for RTS causes the client to get AP's attention more often? So do you put higher RTS Threshold and Fragmentation Threshold values for the clients with high P2P uses and lower values for rest of the clients?

itchibahn

You shouldn't activate it on the AP side, only the client side.

We use 256k for RTS and 768 for frag on our Ubiquiti radios and EWMA for the alogrithim

256K not 256? 256K is much higher than default 2346. Could you explain why such a high value please?

itchibahn

If I am not mistaken the RTS/CTS is off by default. Uncheck the off box. This will enable the client to request to send data. The problem you are encountering is due to the fact that this client continues to broadcast, ultimately deafening the AP to the other clients. With it being off, the default...

itchibahn

Are you sure it's legit traffic and not a virus/trojan/zombie? Yes, I've even visited the client side and had them scan all the PC's. They seem to be clean. Looking at the packets, it's mostly port 80, all-p2p, and communication services such as VoIP, Messengers, etc. What are these AP and Client T...

itchibahn

The clients are UBNT 3.4, and they have "RTS Threshold" and "Fragmentation Threshold" set default. I've set RB333 "Hw. Protection Mode: rts cts" and set NS2's "RTS Threshold=512" and "Fragmentation Threshold=1173", and now I cannot access the client ...

itchibahn

Thanks for clarifying the priorities. I'm trying to get much info possible to resolve some issue I'm facing... If I have 10 CPE's and bandwidth equally assigned 1Mbps each, does the AP assigned the time "windows" equally to all CPE's or based on needs? Can AP assign more time "window&...

itchibahn

Isn't the 2GHz-5MHz has maximum of 13MHz bandwidth? If so, at 2MHz full blast per client, wouldn't it be limit to about 6-7 clients, even if I have 40M fiber connection? Thanks for clarifying the queue, it was confusing me. One other question, does the queue take priority over AP/Client TX Limit in ...

itchibahn

Two questions: I'm using 2GHz-5Mhz band. If I'm giving all my clints 2Mbps download/256Kbps upload, and they are at full blast, how many clients can I have without noticing much degradation at client's end? I have aggregated 40M pipe to my ISP. Example calculation would be appreciated so I can learn...

itchibahn

Setup firewall mangle then use simple queue. There's some examples all over this board and also on wiki. Here's one sample http://forum.mikrotik.com/viewtopic.php?f=2&t=37080

itchibahn

I had similar problem that you described with other programs not necessarily the winbox. The problem was within Windows itself. Wiped and reloaded WIndows, and never had that problem again.

itchibahn

This is very frustrating as I am still getting timeouts on browsing and too much packet losts on ping test and voip . I've attached registration to show CCQ/Signals, mangle, queues. There is one client in particular that gets disconnect/reconnect frequently with -80's dbm. Can that effect rest of th...

itchibahn

That's what I thought, and I used to have two rules for each, dest and src port. But I was still having problem with clients timing out. That's when I found the pdf which listed just the dest ports. I'm assuming the dest/src applies to all of my mangle rules? I will change them all to just "por...

itchibahn

Using page 35 of http://mum.mikrotik.com/presentations/CZ09/QoS_Megis.pdf as guide, I have setup to mark every traffic, including unknowns as "others", and using simple queue to control bandwidth usage. But for some reason, enabling the "others" queue is causing problem for all c...

itchibahn

With firewall rules, it doesn't seem to help at all. I've also tried Simple Queues on WiKi, but all those packets are still there in IP Traffic Accounting, and still timeout the other clients. Anyone has any suggestion? / interface bridge settings set use-ip-firewall=yes / ip firewall mangle add cha...

itchibahn

Looking at the packets, they seem to be P2P connections. So I tried to limit using firewall rules below but making no dent: ;;; P2P Connections Limit to 10 chain=forward action=add-src-to-address-list p2p=all-p2p address-list=P2P_Users address-list-timeout=12h chain=forward action=drop tcp-flags=syn...

itchibahn

I noticed when one client's radio is enabled, he brings down all other 7 clients causing timeouts. I've set AP TX and Client TX limits, but it doesn't seem make much difference. Looking at the 15 second snapshot of clients traffic, there are 215 destinations with loads of small packets. What else ca...

itchibahn

All of sudden, since Yesterday, all clients were getting timed out and unable to brows. I did a ping tests from AP to radios, and it was consistently around 980ms or timeouts. I tracked down and shutdown one of the client radio, and everything returned normal, just occasionally hitting 650ms pings a...

itchibahn

I've upgraded RB133 from v3.10 to v3.30 with firmware 2.18. I've checked all the settings, and they are all intact. The CPU usage is about the same average 8% just setting and during bandwidth test to speedtest.net it goes up to 30%. But noticed during bandwidth test, it's slowed by 26%. Is RB133 CP...

itchibahn

Thanks for the info, will give it a try and post my findings.

I'm also interested in you result...
I'm currently running v3.30 on RB133C, and didn't notice huge difference. Occasionally, I saw 30% or so.

Does anyone recommend or not recommend v4.2 for RB133C and RB333?

itchibahn

Two weeks without lock up. Looks like that fixes the problem. Thanks for your help!!!

itchibahn

I'm having trouble getting syslog to work with v3.10. I have logging configured to remote address below. But when I sniff the packets, I don't see any atempt to the remote IP. Is anyone else having this problem with v3.10? And of course, not reaching to my unix box's syslogd. 5 info remote router1 w...

itchibahn

I upgraded to v2.6 without changing the frequency just to see what happens. And it lasted 3 days before lockup. Now I've slowed the frequency to 266MHz.

/ system routerboard settings change-frequency frequency=266MHz
(power cycle)

I will post the result.

Thanks.

itchibahn

Thanks. I'll give that a shot.

itchibahn

RB333 with XR2 and XR5 has been running fine for a month, and all of sudden it locked up. 4 clients (2 RB133/XR2 and 2 NS2) are not able to access Internet. And I cannot access the RB333, I had to completely power down and up. Then it came backup for about 10 minutes or so and it went dead again. Af...

itchibahn

Is 5.4G public band in US?

itchibahn

I need at least 80' for PtP with two RB333/XR5/Grid26dBi. I'm trying to attach guy wire for Rohn25 to my roof. What and where do you get the brackets for your roof that's strong enough to hold at 50 mile/h wind?

itchibahn

Since the new install of RB532/XR2/Omni (AP) and RB133/XR2 (Stations) about 3 months ago on 2GHz-5MHz/2412MHz, had no problem until today. Yesterday we had a wind at about 50mph and had no problem, but today with more calm winds, we lost all the stations and can't get them back. From the AP, we did ...

itchibahn

Considering XR5 w/ RB333 for PtP backhaul. I'm thinking about using 5.2 or 5.4 frequency as to avoid 5.8 (other network and phones) and 5.7 (canopy). Any of you doing other than 5.8/5.7 for backhaul?

itchibahn

That should not change your received signal level. Or, if it does, not that much. Check the antenna first. Drop out the d-link and check again. :) So the D-Link running on 2.4G b/g mode shouldn't interfere much w/ CPE 2.4G-5M on roof? I've setup an appointment, so I can shutdown the D-Link to test ...

itchibahn

Umm... use a different channel? I remotely logged in to their D-Link and it was on channel 6, so I tried various channels and left it at Auto, made no difference. I didn't try on RB133c/XR2 CPE as I will have to change also on AP which will effect all clients. I'm not yet brave enough to bring all ...

itchibahn

I know that integrated Canopy 900 SM's are by default HPOL. I have my Canopy AP's on HPOL so I can use both integrated and non-integrated SM's. I'm guessing they too have them in HPOL.

itchibahn

I've installed RB133c/XR2 @ 2.4-5MHz at customer and has -71dBm signal. Next day I noticed, the signal changed to -84dBm. Visited customer and noticed customer installed D-Link 624 2.4Ghz soho router to use his laptop. Is there anything else I can do to reduce interference from the D-Link besides ch...

itchibahn

hello guys, please I've got a slight problem here. I happened 2 check the noise floor of my mikrotik RB 112 and it showed me values b/w -89dbm and 92dbm,as compared to -100dbm i used 2 get previously.Is this good, if no, what could be d possible cause(s) of it,and wats d best noise floor representa...

itchibahn

Not a perfect LOS but near, there are few trees. But I have other CPE's that has more trees on it's way and has better signal rates. I tried nstreme but it seems to disconnect more frequently. I tried various Supported and Basic Rates. At some rates, it would not register. Seems that on default sett...

itchibahn

All my CPE's are already on 5MHz channel spacing. Changing to HPOL would take days as all clients will need to be changed. I guess I'll put that in mind as last resort (should of started with HPOL). Since this CPE's received signal varies between -73 to -94dBm, I'll try the Supported and Basic Rate ...

itchibahn

Wow, today: Signal To Noise: -4dBm Noise Floor: -80dBm Tx/Rx Signal fluctuating -73/-73 to -80/-94dBm Don't care about speed, just want reliable connection. What would you recommend for Data Rates? Where do you find Basic Rates? What would you recommend for Calibration Interval? Do you enable calibr...

itchibahn

Same problem here. Improved after increasing Tx Power to 27dBm on both side, but still disconnects several times a day: Distance: 1.7km ROS: v2.9.46 Freq: 2.412 Band: 2GHz-5MHz Tx Power Mode: Card Rates Tx Power: 27dBm AP: XR2 on RB532a Noise Floor: -99dBm CPE: XR2 on Rb133c Tx/Rx Signal Strength: -...

itchibahn

Did you turn the TX power over 18? If so that could cause your rebooting problems.. Also what voltage power supply did you use?
-Gerard

Gerard,

What power supply rating would you recommend if you were pushing over 18?

itchibahn

What would be a typical distance to expect between the AP and CPE below? AP: RB532a/XR2/Omni12dBi CPE: RB133c/XR2/Pannel19dBi. On AP side, the cable is about 3 feet, and the CPE side the cable is only 1 feet. I tried the wireless calculators online but couldn't find the typical losses for the connec...

itchibahn

Hello. I need some help with finding a radius solution. What I want is a server to control access to a large wireless network. Am locking for these features: -Individual bandwith setting (groups and clients) -Captive portal -Web interface (adding ,remowing, blocking etc clients) Any tips for softwa...

itchibahn

CPE was registering and I was able to Mac Ping but not by IP address in following config: AP's ether a.b.c.1 AP's wlan a.b.c.2, AP-Bridge mode CPE's ether a.b.c.10 CPE's wlan a.b.c.11, Station mode As mentioned in this forum and on documentation, I've also tried creating a bridge interfaced to ether...

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