Showing posts with label buggy. Show all posts
Showing posts with label buggy. Show all posts

Saturday, March 31, 2012

D-Link 4-Port Wireless-G 54Mbps Router Review

D-Link 4-Port Wireless-G 54Mbps Router
Average Reviews:

(More customer reviews)
I got this item for "free" as a promotion. Free, it's not, having cost me literally hours of troubleshooting. I have installed the latest firmware, 1.04 A1.
1) Hangs up for minutes at a time, seemingly randomly. You have to power cycle, or wait and it MAY recover.
2) Randomly won't let you log in, keeping you at the login screen. Have to power cycle, or reset to factory settings. In the latter case, you lose all your settings. This bug is reported consistently in forums you can find with a web search.
3) Many features are incompatible with wireless clients that work perfectly with other wireless routers. WEP and WPA would not work with two of my wireless cards. Auto Channel Scan fails in conjunction with WEP. It took a full afternoon of experimentation to discover which features are compatible with each other and with various clients. In the end, I had to use MAC filtering to enable any type of security that would work for all clients.
5) Static (in range) IP addresses fail for every client, while the router provides no way to link MAC addresses to a particular IP. This renders port forwarding useless.
5) Web interface and documentation is unclear and full of errors, from misspellings to inconsistent terminology to factual errors. The overall impression is of sloppy, haphazard engineering.
6) Technical support is provided by very polite folks in India, who will run you through their standard procedure over and over without actually solving the problem.
If you want a router that works, or if your time is worth anything, then don't buy this one.

Click Here to see more reviews about: D-Link 4-Port Wireless-G 54Mbps Router

Wireless G Router, 4-Port Switch, 802.11g, 54Mbps

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Tuesday, December 20, 2011

ZyXEL G4100 802.11g HotSpot Service Gateway With 3 Button Thermal Printer Review

ZyXEL G4100 802.11g HotSpot Service Gateway With 3 Button Thermal Printer
Average Reviews:

(More customer reviews)
We had high hopes when we tried the Zyzel G-4100 out in a coffeehouse and a motel as a hotspot router. The integrated printer seemed really convenient, and the router promised all sorts of powerful security features. And it had this really cool look to it - sort of like Hal from the movie "2001."
Come to think of it, maybe its resemblance to Hal ("I'm sorry, Dave, I can't do that") should have been a warning to us, because this product isn't delivering. As the manufacturer admitted to us, a single user running BitTorrent (and LOTS of users try to run BitTorrent at public hotspots) can crash the router. So can a significant load from just a few users running other network-intensive applications. The printer will, at random times, not produce a ticket, requiring a reboot of the router. At other times, the router's internal Web server crashes, so we cannot even log in to control the router. Guests at the venues have complained and staff have gotten extremely frustrated. The router often has to be rebooted once or twice daily.
We don't have access to the internal source code of the product, so we cannot pinpoint the bugs. However, the crashes appear to correlate with the number of connections to the outside world that have been made in the past 5 minutes. (Note that your browser can make a dozen or more connections just to fetch all the parts of one Web page.) Too many, and things start to go wrong. Not always immediately, but eventually. Probably due to a "memory leak," an uninitialized pointer, memory corruption, or some other error in the router's programming.
We contacted Zyxel tech support, and they told us that the device "wasn't intended for heavy loads." (I'd hardly consider a few users in a coffeehouse to be a heavy load, and even if it were the router should certainly handle the situation gracefully and not crash.) They finally suggested that we put a second router behind the hotspot router to take some of the load off it. Is this something one should have to do with a router that sells for around $500, especially when the same load won't crash routers that sell for a tenth of the price?
Bottom line: Zyxel simply will not own up to the fact that their firmware has bugs and needs fixing.
We then contacted a colleague who does Internet in hotels and resorts. Turns out we should have called him before making the initial purchase. He said that his company had sold off more than 100 of these routers because they were a constant source of trouble. He also told us that these routers very often blow out their power supplies. (He thought that the power supplies shipped with the units either were of poor quality or weren't rated to supply enough current for the device, and recommended that we substitute one with a higher current rating.) Indeed, we had a power supply fail on us; we thought it was a chance occurrence until we spoke to him.
We really want to keep using this product, because it has a lot of features we like. But unless Zyxel quits making excuses and comes up with stable firmware that's sufficiently robust to operate a real life public hotspot, we're going to have to eBay it and find something that works. Or maybe build our own. We could homebrew something quite nice for the same $500 or so.
I hope to be able to update this review one day to say that Zyxel fixed their bugs. But at the moment, all we can say is that we don't recommend buying this product. It crashes, it freezes, and the manufacturer denies that anything is wrong. Save your money.

Click Here to see more reviews about: ZyXEL G4100 802.11g HotSpot Service Gateway With 3 Button Thermal Printer

ZYXEL G-4100V2 W PRINTER - 802.11G HOTSPOT SERVICE GATEWAY W PRINTER

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Monday, November 14, 2011

Cisco RVL200 4-Port SSL/IPsec VPN Router Review

Cisco RVL200 4-Port SSL/IPsec VPN Router
Average Reviews:

(More customer reviews)
I want to be able to view and control my IP cameras installed around my home when I am away. The IP camera I have comes with a web interface for realtime viewing from a PC in the local network. This SSL VPN router allows me to connect back to the web interface of my IP camera when I am at work. The out of the box experience is good - I have no trouble in setting it up and connect to the internet with my cable modem. After I changed my default password, created a few user accounts for my family members, and enabled the Remote Management, I put the device into test. First, I have to find the ip address that my cable company assigned to me and the ip address of my camera given by the router - all available from the router administration web interface at http://192.168.1.1. When I was at work the next day, I was able to get to the internet address of my SSL router and connect to my home network within a minute. Just want to share my success story with the community that might have the same need. The QoS feature may come to rescue when I am working from home, using my company's VPN, and my kids are playing bandwidth extensive internet games. I have to see how well it would work.

Click Here to see more reviews about: Cisco RVL200 4-Port SSL/IPsec VPN Router

The RVL200 features a Virtual Private Network (VPN) security engine that creates encrypted SSL tunnels through the Internet. The SSL VPN tunnels enable remote users from at home, or on the road to easily, and securely connect to the office network through a typical wired or wireless broadband connection. When used with the RV016 or other Linksys VPN router, IPSec branch-to-branch connections can be established allowing users in a remote office to connect to the corporate network. The RVL200 features a built-in 4-port full-duplex 10/100 Ethernet switch to connect four PCs directly, or additional switches. As an essential element of your business, this product provides security functions for authentication and encryption. Linksys proven SPI Firewall is integrated into the gateway providing security from outside threats. The QoS features provide consistent voice and video quality throughout your business.

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