Community discussions

MikroTik App

Search found 24 matches

by Boro
Thu Mar 22, 2007 5:05 pm
Forum: Wireless Networking
Topic: 802.11n Support
Replies: 10
Views: 2488

The MIMO technology used in 802.11n uses diversity antennas/receivers to gain the RX performance by extracting information signal from multiple recieved signals (they are slighty diffrent from each other) and noise rejection. This technique is used for years in GSM/UMTS to achieve top sensitivity an...
by Boro
Wed Mar 21, 2007 4:16 pm
Forum: Wireless Networking
Topic: WPA2 no Mikrotik clients-disconnection on keyupdate time PSK
Replies: 11
Views: 2896

I had the same problem with Minitar AP based on Realtek 8186 chipset ( working as client with Linksys WRT54GS ) so it is probably related to the Realtek chipset/driver (I used Edimax firmware). But I noticed other problem with Mikrotik & SR2@WPA/WPA2 PSK AES and Ralink 2560 based client PCI cards. T...
by Boro
Tue Jan 23, 2007 10:00 am
Forum: Wireless Networking
Topic: Which 400mW is best - Atheros or Senao?
Replies: 14
Views: 2427

i've tested both of theme and the SR2 is far better than 8602.
The SR2 is the best minipci card ever for me - impressive sensityivity and power. Some guys claim that this great sensitivity can be disadvantage in high interference area - it is possible. The price of SR2 isn't advantage too :)
by Boro
Mon Dec 11, 2006 10:22 am
Forum: Wireless Networking
Topic: RB112 and sr2 + cm9 power?
Replies: 4
Views: 928

Yes, SR2 works with RB 112 like a charm. No restarts even with full output power.
by Boro
Wed Dec 06, 2006 10:41 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Ofcourse linksys performance (sensitivity in this case) is considerably worse than SR2, but output power of client card is another thing. Sure, with SR2 I can use auto because if client card choose higher tx rate (lowest power) SR2 will be still able to work with this low level (ofcourse if there is...
by Boro
Tue Dec 05, 2006 10:55 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

The reason why I use fixed client tx rate is the output power. 5.5Mbit/s is the highest rate with still acceptable power (in my cards) and simultaneously enough low for near and far clients. If i set clients to 'auto' they jump over the high rates (18Mbit and higher) and recieving level seen by Link...
by Boro
Mon Dec 04, 2006 2:10 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

this is my misgiving too. I will send this problem to Ralink and maybe they will fix it with new driver, if not I'll think about client card swapping...
Have you guys any experience with TP-Link WN551 (atheros 5211) as client cards? They are reasonable priced and maybe it is interesting choice?
by Boro
Mon Dec 04, 2006 12:42 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

no, because Ralink do WPA2 encryption by the hardware no, because using the same cards I can achieve ~3Mbyte/s with LinksysWRT54GS and no, because software WPA2 isn't worse than hardware - Linksys do WPA2 by the software with great performance and compatibility. So, you can ask why I want to swap th...
by Boro
Mon Dec 04, 2006 11:32 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

janisk, there is no big problem when using atheros or intel based client cards - real transfer form/to FTP wired serwer is about 1,5Mbyte/s (maybe it is not perfect but sufficient for now...). BUT when using Ralink RT2560 based cards (diffrent vendors: MSI PC54G2, Gigabyte WPKG and some Sparklans) t...
by Boro
Mon Dec 04, 2006 11:16 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

normis I wrote clearly that Ralink/tplink/Intel 2915 was CLIENT CARDS working with RB112+SR2 as AP.... EDIT: janisk was faster :) and yes I noticed that AP->client is limited mainly by cpu performance but there was no time to repeat tests yesterday. Today I will repeat it with wired client as a sour...
by Boro
Mon Dec 04, 2006 12:54 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Guys the problem with RB came back, but now the problem isn't regarded to signal level (the levels on both sides are perfect) but it seems there is compatibility problem with Mikrotik and Ralink RT2560 chipset when using WPA/WPA2 AES. Here are tests I made usinb Mikrotik bandwidth tool (all with RB1...
by Boro
Sun Dec 03, 2006 1:30 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

brasileottanta, I can't limit speed by supported/basic rates in RB112 because I have 15Mbit connection and every user should achieve full speed if he is only one in the moment, so I must use high AP Tx Rate at least 36Mbit/s (I cannot use 802.11b only mode). Simultaneously client tx rate should have...
by Boro
Sun Dec 03, 2006 1:40 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

@Equis I tried diffrent distances and max speed was about 1,5MB/s (megabyte!!) so is about 12-13mbit/s . With Linksys WRT54GS at the same testing procedure I get 2,5MByte/s and with frameburst enable about 3Mbyte/s (with software WPA2 done by CPU!! and max cpu usage of ~30% !! with RB112 i can't get...
by Boro
Sat Dec 02, 2006 10:49 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Today I tried my new SR2 with RB112. My problems like with 8602 disapeard. The recieving signal levels from clients are very good (even slighty better then thoose from linksys). Now what I noticed: 1./The client cards hopping over speed rates (they have Tx Rate set to fixed 5.5Mbps in the driver, no...
by Boro
Tue Nov 28, 2006 1:46 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

if you search this forum, you will find that based on user experiences, it is more like the worst card ever made ... This is big suprise for me...but I prefer your practical experience than sellers one. So which card should I get to have top grade radio (for AP, 2,4GHz, 802.11g)? SR2? CM-9? R52? or...
by Boro
Tue Nov 28, 2006 10:11 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

@matthias I don't say that WPA2 is buggy. I said "buggy" because of what you say about problems with mikrotik WPA2 and mixed manufacturers...I have no problems with WPA2 and Linksys - everything works like a charm. @jo2jo I checked every comination of A and B connector and A and B antenna option. AF...
by Boro
Tue Nov 28, 2006 12:22 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Yes I have to try VSSID - maybe I'll swap it again before winter comes for good...

What about using it without encryption? what is the benefits to not using "buggy" WPA2? My clients can autenticate and mainly there was no problem with disconecting but with poor performance.
by Boro
Tue Nov 28, 2006 12:10 am
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

I cannot test it without encryption because I have one antenna on the tower and all my client use WPA2... I still can't understand why CLIENT tx rate change when it is fixed on the driver (with linksys it is always stable). There is another problem: output power of senao nmp-8602+. It is 400mW versi...
by Boro
Mon Nov 27, 2006 11:33 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

This is some idea but there is not so much interference on my channel (and overlapping channels)... and what about low client signal levels??
by Boro
Mon Nov 27, 2006 9:01 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Yes, my clients have had a connection, but with bad performance and even some disconnects from time to time (only far users). And yes I saw this message in log but not so frequently. Mainly I see 'excessive data loss' or somethig similar. P.S. 'far users" means 1,5km - this is the biggest distance i...
by Boro
Mon Nov 27, 2006 8:31 pm
Forum: Wireless Networking
Topic: Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)
Replies: 55
Views: 8462

Linksys WRT54GS much better then RB112+Senao NMP-8602+ (FCC)

Recently I replaced my old Linksys WRT54GS with RB112+Senao NMP-8602+ (working as AP only) due to have top grade radio performance. Unfortunately the result is much worse than Linksys... All of my clients has cards based on Ralink RT2560 (fixed to 5.5Mbit tx rate in driver - to increase output power...
by Boro
Tue Nov 21, 2006 6:40 pm
Forum: Wireless Networking
Topic: forcing fixed client tx rate
Replies: 3
Views: 957

Now I noticed that setting fixed Tx rate in client card driver seems resulting with no effect! It worked with my old one AP (Linksys WRT54GS with OpenWrt software). Moreover the client signal levels seen by AP was stronger with old one!! what is going on??? Linksys has rather medium quality radio mo...
by Boro
Tue Nov 21, 2006 10:31 am
Forum: Wireless Networking
Topic: forcing fixed client tx rate
Replies: 3
Views: 957

Thank you sergejs for your answer but I know how to change AP TX Rate but I don't know how to set remotly CLIENT TX RATE (transmiting speed of client card to the AP). I can set it by selecting right option in client card driver, but every one in my network has this options set to 'Auto' and I don't ...
by Boro
Mon Nov 20, 2006 9:49 pm
Forum: Wireless Networking
Topic: forcing fixed client tx rate
Replies: 3
Views: 957

forcing fixed client tx rate

Is this possible to force CLIENT TX RATE to fixed value eg. 2 of 5.5Mbps form AP side (MT 2.9.34 on RB112 + Senao nmp-8602+). Client cards TX rate option is set to "Auto'. This would be very important feature because output power of client cards is very weak in higher tx rates so by putting it to lo...