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Sunday, October 21, 2012
List of bad actions in Wireless
Actions that will help you with problems with Wireless-A:
This is not optimized business system or algorithm. If someone wants you to do this and publikava forum, step by step.
Hardware:
- Check irradiators polarization on both sides that match
- Check the Fresnel Zone (radio direct vision) http://mikrotik-bg.n....php?topic=15.0, move (lift) antennas if needed
- Move antennas farther away from others to avoid influences
- Move the antenna away from large metal objects, such as solar
- RouterBOARD-lined and aluminum / aluminum box Change.
- Rewind the antenna cable, ie detach and attach them again, connectors, adapters, pigtails, cables ...
- Measured with a multimeter cable from the card to the tanners of strange values and power ...
- Change to supply more watts or more volts. Sets www.routerboard.com to the maximum voltage. It should not be reached because the board is reset when voltage peaks.
- Replace the cable pigtail, etc. irradiator, antenna. Test each stage while finding problematic component. Do not condemn the brand as the most common problem if a component of the store will replace it.
- Change the Wi-Fi card with "better" with greater sensitivity and more power. Usually powerful cards work better when the TX Power set all rates fixed at a low value. That power is reduced, which stabilize the operation.
- Change "California" (hash) + a plate irradiator for high gain antenna.
For PtMP:
- Change all CPE-'s with MikroTik and activate nstreme.
- Change Omni Antenna (prakchata) with several sectoral (maybe a splitter). Or directed antennas.
Software:
- Check with Snooper free channels. Done separately for the different widths of the grooves 40 (turbo), 20, 10, 5. To cover the entire air can be introduced range in scan list.
- Upload a new RouterOS + newer boot loader case of RouterBOARD: http://www.miro.co.z...otik_Router.htm Stable versions: 3.10, 3.30, 4.7 (without DHCP and HotSpot).
- Check whether the CPU load will last if RouterBOARD-not withstand a nstreme - replace it with a more powerful model or PC.
- For PtMP: Check traffic Torch, for many connections, many broadcast, spam, virus and. Etc. p2p traffic. If interfaces are Bridge - put filters or reconfigure the routing. Disable Default Forward.
- Enable DFS no-radar-detect - automatically select a free channel. The result is 100% garanitran can have channel interference. Opticians can be limited by scan-list.
- Changes Adaptive Noise Immunity and check for improvement or deterioration. When I nstreme not used. The option is available for some chipsets.
- Run ping to customers and channel spin from those who were free after checking with Snooper, ping monitor, until you find the best.
- Reduction of tx power, return to default
- Returns all default settings, including accessible only by CLI: / interface wireless reset-configuration wlan (stop command interface)
- Reduce ack-timeout especially closer links with the tally: http://www.mikrotik....ce/wireless.php or return of dynamic
- RB333 overheating can optimize / system routerboard settings change-frequency frequency = 266MHz version after update
- Put the latest wireless-test and activate RTS / CTS (@ CPE), against "hidden node" problem
- Specify the maximum rate of the lower value, usually 36M. For AP-th - you can try to 802.11b.
- Put QoS and / or bandwidth management of the CPE-th, AP-it ..
- Replace firmware-and the CPE-it
http://wiki.mikrotik...ki/Wireless_FAQ
Here is a little clarification on some settings itnerfeysite in English.
Interesting discussion on the number of clients AP: http://forum.mikroti...php?f=7&t=26382
Quote
-Relatively low noise floor
-Almost all clients are connecting at 11mbps RX / TX with short preamble
-We use RTS / frag settings of 512/1024 (respectively) on the client CPE's
-XR2 card connected to a 120deg h-pol sector
-Clients that have integrated router, QoS and bandwidth controls (like Tranzeo CPQ, or Ubiquiti PS2)
-We also use WPA / AES encryption on all connections
-Clients TX power turned down as to not over power the AP and create self interference
-Ping times can spike on occasion, but as you'll notice in the screen shot, they average @ 55ms for a gigantic 1,450 byte ICMP packet
Quote
1. Never compromise in quality, always use cards like XR2, SR2, XR5, SR5, R 52, R5H ALWAYS CARE FULL IN SELECTION OF RIGHT CPE.
2. Use high quality and reputed antennas. and use top quality pigtails.
3. avoid extremely heavy users to become ur customer if possible.
4. always do RF planning and keep a sharp look on other service provider and their frequency.
Quote
I've been able to push the clients connected on a single AP radio from 20 (before ROS3.15) to 40 (Wireless-test enabled) and still getting awesome results.
Profiles of 2Mbit/256k.
All the network is Mikrotik based (CPE included)
We would be glad to share the results of your experiments please post clear and precise
For testing,: be careful in monitoring the improvement and deterioration, watch a ping, CCQ, one speed in the other direction, stability throughout the day ...
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