802.11n Routers - The Next Generation
In the last 3 months or so, we have seen a flurry of new routers on the market labeled either "draft n" or "pre n". In this post, I'm going to take a look at these new routers, see how they compare to the router you may have in your home and help you decide if you should go buy one.
A brief history of wireless
Lets take a quick peek at where the wireless industry has come from in the last few years. Here are the standards and how they have evolved:
- 802.11a
is a dying standard. It operates on a different frequency than the others (in the 5 GHz range) and so if you have an 802.11a only network card, you can't talk to other access points operating on the more common 2.4 GHz range. It does have some pro's – most notably less interference from other devices in the home like cordless phones, baby monitors and microwaves. Microsoft is still pushing 802.11a for Xbox and Media Center, but the rest of the world has moved on. - 802.11b
is an aging standard. It was the first widely adopted Wi-Fi standard, but was quickly supplanted by the improved 802.11g that can move more traffic. It carries (theoretically) speeds of up to 11mbps. - 802.11g
is the current standard. It carries good (theoretically) speeds of up to 54mbps. For most users this is sufficient since it is faster than the typical broadband connection to the home. Once you start moving huge files around inside your home (think high definition video) it simply isn't good enough. - 802.11g + MIMO
adds MIMO capability to the g-standard. MIMO adds multiple antennas to get better coverage, more distance, better speeds and is less prone to interference.
The next step
The next step in the evolution is 802.11n. It is promising to deliver incredible speeds - 10 times 802.11g, for speeds up to 600 mbps. Obtaining such speeds will become important in the next 5-10 years as the digital home starts to take shape and consumers are moving large amounts of high definition video content around their homes.
So where are things? Well the 802.11n standard is still being designed by the governing standards committee, IEEE. They have produced an early draft of the standard and are in the middle of wading through comments, hoping to have an updated draft in Jan 2007. A recent announcement suggests that the standard will not be completed until some time in 2008.
That's the official position of the standards body. What the device manufacturers are doing is a different matter. Each of the major router players have released versions of their routers based on the initial, not yet finished, draft n standard. Here they are:
Each manufacturer has made up a product name for their device that suggests that it's based on the N standard. However, if you read the small print it's based on the draft n standard, and this will most definitely change before it's finalized. So if you buy one of these devices today, it's likely that you have to purchase a new router again in 2008 when the final standard is released, to ensure compatibility to the rest of the world. Also, don't forget that you'll need a draft n wireless network card if you want to get the speed benefits - so it can be quite an investment.
Do they live up to the hype?
In a word, no. We've done some very rudimentary tests (I will post a more in depth article later), but from what we have seen so far the performance of these draft n routers are comparable to the last generation of 802.11g + MIMO routers. So while MIMO has delivered on the range improvements and some incremental speed enhancements, draft n routers have failed to deliver any significant increases in speed. A recent Walt Mossberg review also made some similar findings.
I have to applaud the IEEE for delaying the standard at this point. I believe there is little value in making some minor incremental changes above 802.11g+MIMO and shipping a whole new set of gear. The IEEE is right on to delay the standard until devices interoperate well and have made huge strides in speed and performance. If 802.11n is going to the backbone of the future of wireless then it is prudent to wait until it's living up to its claims.
So if you're in the market for a new router, my recommendation would be to stick with the 802.11g + MIMO devices - you'll save some cash and for most people it'll be more than enough for todays needs.
--
Brett Marl
CTO, Pure Networks
www.networkmagic.com





Comments
Mark,
Thanks for your comments. We are committed to pre-n routers and supporting all routers that are commercially available. We have added support for the Belkin N1 in our latest 4.0 release that is due out shortly.
You can download and try a preview of this new release at:
http://www.networkmagic.com/digitallife/
and join our beta program to receive further announcements.
I would also urge you to call our support team to help troubleshoot your net2go problem, net2go should work with any UPnP compliant router - a standard which all of the draft-n routers do support. If you are having problems, you may have uncovered an interesting bug.
I understand the frustration with NM not working with the latest hardware as soon it comes out. Again, we are committed to adding new driver support for these new routers in each release, but it usually takes us a rev or two get caught up.
Thanks for your understanding,
-Brett.
Posted by: Brett Marl | October 18, 2006 10:55 PM
Brett, I just sent an email. I guess the thing that bugs me here is that you don't say anything to address what Pure Networks is going to do about the new routers. You come across as CNET and give reviews instead of addressing the lack of compliance your product faces with this new technology. Please address that. I was very disappointed, after purchasing your product that I cannot use Net2Go. I wish I knew of that before. No problem, simply please address the new compliance issue.
Thanks. Mark
Posted by: Mark | October 18, 2006 10:16 PM
In your statement in August, you write... "In the last 3 months or so, we have seen a flurry of new routers on the market labeled either "draft n" or "pre n". In this post, I'm going to take a look at these new routers, see how they compare to the router you may have in your home and help you decide if you should go buy one."
My statement here, and perhaps for many others is, it's too late, we bought one. Not too many people are concerned if whether you should be our council in buying a new router, we just want to KNOW, are you going to make your software WORK for it??? I am a subsciber of Network Magic, but some of the features do NOT work with my new, and proud to say, Belkin N1 Wireless. Are you going to wait to predict the industry standard will not take advantage of this, and therefore, care less about the customer base you have and NOT address the products THEY chose to buy and then NOT upgrade your software? OR, are you working on a fix to address these New Generation routers?
Please tell us you have the CUSTOMERS in mind and are addressing this, even if they cannot take advantage of the latest technology, that is BESIDES the point. If not, perhaps we should rethink YOUR product until 2008 when you decide to address this "standard".
Thanks for understanding that us as consumers, AND YOUR CUSTOMERS are buying the latest in technology, despite what you may recommend. If we need to buy a router, we might as well buy the latest in technology, instead of buying a new one again later when it becomes a "standard". For $150, WHO CARES!!!
Thanks for your PROMPT attention to this matter and developing updates for YOUR customers.
Posted by: Mark | October 18, 2006 10:11 PM
Have forgotten my password and name of computer and can not complete the necessary forms.
Posted by: Fred Charman | September 25, 2006 08:52 AM
I have now finished direct comparisons of 3 vendor products in the same environment.
LinkSys WRT300N/WCM300N
NetGear WNR854T
DLink DIR635/DWA642/DWA645/DWA542
The winner, by a WIDE margin, is Dlink ... specifically, the 635 router. DIR625 failed to connect using PPPoE, and Dlink was unable to resolve the problem.
My environment: Alcatel SpeedTouch DSL Modem -> Linksys DIR635 -> Dlink DGS2205 Gigabit Switch.
Wireless speed: 300Mbps
Switch Connect: 100Mbps
Samba storage: 1000Mbps
The Netgear Gigabit connect should have provided a clear benefit in this setup, because I'm having to funnel 300Mbps thru 100Mbps in order to reach my Gigabit network.
Dlink thruput and responsiveness was exactly as expected for my tests.
- CPU time was as expected
Linksys was 100 times slower, because the PCI card consumed excessive amounts of CPU time, showing up in both the app I was running and SYSTEM time. The speed dropped to 13Mbps, and stayed there. There were numerous disconnects, causing issues with the backend servers.
NetGear was about 25% of the measured thruput of this test, compared to DLink.
My tests involved cross-brand connections between vendor PCI and PCcard devices. The LinkSys cards were by far the slowest and most troublesome.
The best news of all: Dlink firmware to control/manage/log activity on the router is BRILLIANT; Best-of-breed, in my opinion.
At one point, I thought NetGear would outperform DLink, and then I would have to choose between Speed and Ease-Of-Use.
Solid tests showed I didn't have to choose.
The only outstanding issue I have with DLink is that the matching PCI DeskTop adapter, DWA547 is not yet shipping.
It's not yet clear to me what advantages it will provide. I can can get about 17-18% utilization of the 300Mbps bandwidth using a single data stream, which is respectable considering the 100Mbps step-down in the middle.
ps., the test was backing up 10,000+ files, 500GB to Samba. Linksys was an all-night run, full of errors. I blame that on their PCI DeskTop adapter.
Swapping Dlink Adapter for LinkSys improved the stability and cpu usage to the LinkSys router, but was much MUCH slower, so I didn't bother to time it.
NetGear was so slow, I didn't let it run more than a few minutes.
Posted by: Dick Dunbar | September 24, 2006 02:35 PM
I found this site after armwrestling Linksys 300N products for a week.
I don't agree with the lead-in article that we should be avoiding this technology ... just certain non-responsive vendors like Linksys.
I agree with Paul ... it was the signal Range issue I was trying to fix, and the 300Mbps speed came along for free.
I'm quite happy testing the Dlink equipment, but I had no idea NetGear had a gigabit switch.
I connect: DSL -> WirelessRouter -> Gigabit switch. My GB wired machines never pass thru the Wireless portion.
The Linksys connection speeds were terrible. Start out at 270Mbps, and quickly degrade to 13Mbps. I'm pretty sure the issue was with the Linksys 300N PCI card.
Dlink shows constant 300Mbps connection speeds, but I think they might be reporting a CONSTANT, unmeasured speed.
Thanks for the pointer to the speed measuring tool.
Posted by: Dick Dunbar | September 20, 2006 11:28 AM
Using all Linksys Draft-N products, and I am in heaven. There is a setting for the Drivers for the PCI Adapter and the Laptop Card called Afterburner, enable that setting and the files will fly. I am very happy with the Linksys products. Would not want any other way.
Posted by: Scott A. Smith | September 10, 2006 09:20 AM
I would like to make one point with respect to the review of pre-N routers versus the 8.11g:
"Thick brick walls"
I was running a netgear 'g' router at my shop. Great connectivity, but appalling range. I then installed the Belkin pre-n one and the client cards.
From no signal at all in the back office to 95%plus and good speed too. I fully accept that this may not be an issue for all users, but if you want to put PCs where you like and leave the router next to the 'phone connection, I would thouroghly recommend using them.
Posted by: Steve Bright | August 31, 2006 01:04 AM
I agree with Jordan M. I could really use a wireless router with a 10/100/1000 switch built in. Most of my network is wired, and I have a gigabit switch on a VPN. Files fly through that VPN, but not through the wireless MIMO router (which is only 10/100.) Netgear is the only Vendor that has thought this through.
Posted by: Paul Racicot | August 28, 2006 06:46 PM
Hi Steve,
Some good news, and some delayed good news :)
The delayed good news is that we are adding support for the draft n routers in the next release. While my comments above were with respect to the speed improvements of draft n, Pure Networks is fully committed to supporting the routers that vendors are shipping.
As D-Link is a partner of ours, Network Magic always works with their routers out of the box with no change needed on our side. This way we can ensure a best-of-breed experience for D-Link customers with some of the advanced features. For the other vendors, we have to build and ship extra drivers.
The good news for you, is that we actually sneaked in support for the WRT 300N into a silent update on our website. We haven't pushed an 'update alert' to existing customers for this as the changes were so minor we didn't want to bug everyone. The latest build if you download it today is 3.2.6221.0. If you don't have this build, then you might want to update NM by doing a manual upgrade.
Thx,
-Brett
--
Brett Marl
CTO, Pure Networks
www.networkmagic.com
Posted by: Brett Marl | August 28, 2006 03:24 PM
Unfortunately I had a lightening stike last month which took out my old faithfull linksys router.
When I went to Comp USA, had a choice of the front row latest wireless routers.
With the excellent history I've had with Linksys, I picked the WRT-300N. As did several others in the store while I was there.
Seems like an awful lot of us got hosed. No home network and out $150.
When I went back, there were mostly "N" routers on the big displays. The 'G's were all bottom shelf and not Linksys.
Is there any liklehood at all that Pure will put out compatable software for these 'N' routers.
Seems like that's what everyone is pushing.
Like it or not, seems the future is here. Early !
S
Posted by: Steve | August 28, 2006 03:09 PM
Impressive setup!
I measure 220mbps by using wsttcp.
1. Install on both machines you want to test between.
2. On the first machine type:
3. on the 2nd machine type
Would be curious to hear what you measure with your cat6 cable.
--
Brett Marl
CTO, Pure Networks
www.networkmagic.com
Posted by: Brett Marl | August 27, 2006 11:02 PM
In my home PC network, we have three personally and individually used PCs (p&i), and 2 communal service PCs (kitchen TV/PC and family room HTPC. One p&i machine (mine) has been wired from the beginning because it rooms in the same room as the cable modem and router. The other four machines were wireless.
After too many lost connections and reboots, we test ran 2 100' cat 6 cables across the house, connecting one from router to a gigabit switch, and the other connecting mine to the switch and back to the router, instead of directly into the router. I suffered no loss whatsover in speed through an on-board gb Lan connection.
The other two p&i machines received $19.99 gb PCI cards (both lost original dial-up modems :-) in the process) and we transfer files and whole directories instantly now.
The Netgear WNR854T will soon replace my Netgear WRT624v3 router, connecting gigabit to gigabit to cable modem. I hear that way there is true 6MBPS cable throughput, and all gb transfers will fly.
To get gb connections working at full speed you have to use cat 6. Fry's electronics sell 1000 feet of it in a box for $169 and we are going to splay it over our basementless ranch house and replace the 2 100 foot cables inside. The remaining 700-800 feet will go to my office for its rewiring.
When we replace a few machines there they will all have that $19.99 card if thet Motherboard does not have on board gigibit LAN. Meanwhile the 2 wireless machines will benefit from increase range of the new router to the older one.
It should all only work as planned. How do you know your actual throughput of 200-220mbps?
Posted by: Jordan Meschkow | August 27, 2006 06:07 PM
If you're interested in a gigabit wired switch then that's a great point. I believe the other router vendors are about to release their draft n routers with gigabit switches also.
Remember that in order to take advantage of those speeds, you need a wired gigabit network card on each PC.
Also, the actual throughput will be affected by how well your wired connections are made. I have a gigabit setup at home, and only get about 220mbps of throughput between PCs. This partly because I have run my own cat5e cable and I lose speed where I have made connections to the patch-panel etc. To get true gigabit you need to make very tight twisted connections.
I will say that 200mbps is plenty fast. I can save large image files on my remote server and it feels like I'm writing to my local disk drive.
Your actual mileage may vary :)
--
Brett Marl
CTO, Pure Networks
www.networkmagic.com
Posted by: Brett Marl | August 26, 2006 03:03 PM
There is another Netgear RangeMax NEXT model the Netgear WNR854T, that has gigabit wired connections. This alone may make it worth upgrading.
Posted by: Jordan Meschkow | August 26, 2006 01:59 PM