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5 Ways to Fix Slow 802.11N Speed - Smallnetbuilder 5 Ways To Fix Slow 802.11n Speed - SmallNetBuilder http://www.smallnetbuilder.com/wireless/wireless-basics/30664-5-way... CLOSE X Loading Image... NEWS NETWORKING MUSIC BESTCOVERY Monday, Apr 29th Follow SmallNetBuilder: HOME CHARTS RANKERS FINDERS WIRELESS NAS LAN & WAN MULTIMEDIA & VOIP SECURITY OTHER CLOUD BASICS FORUMS FOCUS YOU ARE HERE: WIRELESS WIRELESS BASICS 5 WAYS TO FIX SLOW 802.11N SPEED 5 Ways To Fix Slow 802.11n Speed New NICs Added To Compatibility List Wi-Fi, How To, 802.11n WED, 10 DEC 2008 15:44 Check Prices Like 81 Tweet 20 33 TIM HIGGINS Updated 1/31/13: Clarify Fix #3 Update 11/17/10: Added WMM to Fix #4 Update 7/22/10: Removed Draft references and updated Fix #4 Buffalo Technology Synology DiskStation Update 6/27/10: Fixed links Price: $128.93 Price: $629.67 Update 11/23/09: Added Link to LAN Speed Test and link to Brothersoft version of NetMeter So you went and bought a shiny new 802.11n router and were all excited at the prospect of LaCie Thunderbolt Buffalo Technology streaming flawless HD all around your home and moving big ol' folders of ripped CDs and Price: $179.95 Price: $325.45 DVDs fly at lightning speed around your WLAN. But reality is not so much on the flawless HD and lightning speed and you're wondering why TOP RANKED ROUTERS you got sucked in yet again by those crafty consumer networking marketing folks. AC1750 N900 N600 N300 Wired only Well, take heart! SmallNetBuilder understands your pain and is here to help you reclaim some of the throughput that you could be losing due to misunderstanding and misinformation. Fix #1: Use the Correct Measure The first mistake many people make is to use the "Speed" reported by Windows in the See More Rankings Wireless Network Properties window (Figure 1) as the measure of how fast their wireless link is running. PERFORMANCE LEADERBOARD TotalROUTING SimultaneousWIRELESSNAS Throughput Ubiquiti ERLite-3 1,306.6 ASUS RT-N56U 1,268.6 Amped Wireless 1,242.5 R10000G Cisco RV180 1,191.6 Cisco RV 220W 1,113.1 Throughput (Mbps) Figure 1: Pay No Attention To This Number See more... In reality, this number is only distantly related to the actual throughput of your wireless MOST READ connection. What it shows is whatever the wireless adapter's driver tells it to show, which is ASUSWLAN NASRT-AC66UBASICS LANS802.11acCLOUD Dual-BandMORE Wireless-AC1750 usually the link rate currently being used. Gigabit Router Reviewed The link rate is also referred to as the PHY (or physical layer) rate, which is the maximum ASUS RT-N66U Dark Knight Dual-Band Wireless-N900 rate that bits will move across the network link. For a 10/100 Ethernet adapter, you will Gigabit Router Reviewed 1 of 5 30-Apr-13 12:08 AM 5 Ways To Fix Slow 802.11n Speed - SmallNetBuilder http://www.smallnetbuilder.com/wireless/wireless-basics/30664-5-way... ASUSSynologyHowDropboxBelkin To RT-N56UHD ConvertSet vs. DS213+Netcam UpBox.net Switch Blacka WirelessHitsDiskStation Diamond LinkStores AggregationRouter Reviewed Dual-Band into an GigabitAccess Point Wireless-N Router Reviewed ZyXELTheHomePlugDropbox'sNETGEAR Best NSA325 Way FiveAVNeoTV 500 To Dirty 2-Bay GetAdapterPrime Little Whole Power with SecretsRoundup House GooglePlus Media Wireless TV Reviewed Server Coverage Reviewed Buffalo WZR-300HP AirStation HighPower N300 Gigabit WhyDropbox High vs. Power iCloud: Routers No Contest Don't Improve Range Wireless Router Reviewed How To Test A Wireless Router ASUSWRT-Merlin Reviewed OVER IN THE FORUMS Guest network access time When configuring the guest network access time, is this asking me how long I want to the guest network to be accessible? Once this time... RT-AC66U with other routers as APs Current hardware ASUS RT-AC66U router Netgear WNDR3700v2 router Netgear WNR2000 router Netgear GS108T router All of the rooms in our house... Client Status I've noticed for the past couple of FW updates that Clients Status (at least on my system) will not update accurately or will not update... USB and Wifi throughput HORRID?! Hey everyone quick question! Recently purchased the RT-AC66U and am experiencing major problems? What are the expected read/write rates for the... Most Stable FW Version? Hi, I have just bought the RT-N56U last Sunday and I am at the point where I have no idea what to do with it... GO AHEAD...LIKE US! SmallNetBuilder Like You like You and 3,057 others like SmallNetBuilder.com. GET EMAIL UPDATES Enter your email address: Delivered by FeedBurner once a day 2 of 5 30-Apr-13 12:08 AM 5 Ways To Fix Slow 802.11n Speed - SmallNetBuilder http://www.smallnetbuilder.com/wireless/wireless-basics/30664-5-way... Trendnet TEG-S24DG 10/100/1000 Gigabit Ethernet Switch $89.99AR Free Shipping TODAY ONLY Western Digital WD Green 2TB 3.5in Internal Hard Drive $84.99 Free Shipping Seagate Expansion 3TB USB 3.0 External Desktop Drive $99.95 Free Shipping Router Deals Newegg Deals Coupon Codes GoDaddy Coupons Cisco Linksys EA3500 Cisco Linksys EA2700 App Enabled N750 Dual App Enabled N600... Band... from $39.99 from $59.99 Linksys E4200V2 Asus RT-AC66U Dual Simultaneous Dual Band Wireless Router Band Wireless... from $185.19 from $79.99 usually see a speed of 100 Mbps and for a gigabit NIC, you will see 1000 Mbps (if you are connected to a gigabit switch port). Idea 3G @ broadband rates But, as we showed in the Gigabit Ethernet Need To Know, ideacellular.com/netsetter most gigabit Ethernet connections don't deliver a full 1000 Mbps 1 GB Data for Rs 250 Only. Older computers with PCI-based gigabit NICs may deliver only Upto 70% Off On 3G Plans. around 600 Mbps and even current machines using PCIe-based Know More Now! NICs may run at only 900 Mbps. In a similar way, Windows might report a 300 Mbps speed, but your actual throughput could be anywhere between 50 and 90 Mbps (for example), depending on the 11n router and client card being used. The reasons for the big difference between the "link" and actual rates include the high overhead involved in wireless connections (lots of bits used for communicating information other than the actual data you are trying to send or receive) and data retransmission (due to the inherent unreliability of a wireless connection). 11/23/09: Added Link to LAN Speed Test To get a more accurate measure of the speed of your wireless connection, you need to use a method that actually measures the speed that your connection is delivering. These include: Timing a drag-and-drop filecopy and calculating speed (file size / transfer time). LAN Speed Test does essentially the same thing, but automatically for Windows-based systems. Running a file copy and using the Networking monitor in Windows Task Manager or Vista's Reliability and Performance Monitor (Start > Run perfmon.msc) Using NetMeter while watching or listening to a stream or transferring files. (There is also a similar program of the same name from Brothersoft.) Running Iperf or Jperf Of course, whichever method you use, you should first use a wired connection to make the same measurement. This will let you know what you are losing by using a wireless connection. Note that I do not recommend using an Internet-based speed test. That just introduces another (big) variable; the (highly variable) speed of your Internet connection. Fix #2: Use 802.11n Clients Strange as it may seem, some people think that using a 802.11n router will improve the 3 of 5 30-Apr-13 12:08 AM 5 Ways To Fix Slow 802.11n Speed - SmallNetBuilder http://www.smallnetbuilder.com/wireless/wireless-basics/30664-5-way... performance of their network that has only 802.11b/g clients. It won't. 802.11n uses different technology, including MIMO, to achieve higher throughput. Using a 802.11g client with an 11n router will get you a maximum link rate of 54 Mbps and around 22 Mbps of actual, usable throughput. Only an 802.11n client has what it takes to get higher throughput from a draft 11n router. Using 802.11n won't improve your WLAN range, either. Take a look at the throughput vs. path loss (signal level) charts over here and note that they all tend to end at the same point. Draft 802.11n can provide higher throughput at a given location than 802.11b/g and in that way turn a borderline-usable location into a happy web-surfing spot. But it won't get you a signal in that hard-to-reach bedroom on the top floor any better than an 802.11g router will. Fix #3: Don't Connect Draft 11n and 11b/g clients to the same router The 2.4 GHz radio on an 802.11n single or dual-band router can also work with 802.11g and even 11b devices. But these much slower devices force the router to slow down to talk to them, which means a big throughput hit. Fortunately, the "legacy" mechanisms are pretty efficient and reduce throughput only when the slower devices are actively transmitting or receiving. As we showed in Add, Don't Replace When Upgrading to 802.11n, mixing 11n and "legacy" clients can reduce throughput by 50 to 80%. So if you are mixing old and new devices, you could be shooting yourself in the (throughput) foot. Either upgrade to all 11n clients, or use a separate 802.11g router or AP to handle your "legacy" stuff. Fix #4: Use WPA2/AES and Enable WMM Most 802.11n products will knock your throughput down by up to 80% if you use WEP or WPA/TKIP security.
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