Home > Consumer Reviews > Linksys by Cisco WRT400N Dual-Band Wireless-N Router

I purchased this router in July 2009, and it has been running ever since. I am using both g and n networking, and the performance is terrific. My netbook reliably connects at 130mbps, 2.4ghz and my laptop connects at 150mbps, 5ghz. Internet radio appliance works well with 802.11g. All use WPA2. Connections are extremely stable, with no disconnects. Range is acceptable, connectivity is available over three floors of my home, with the router located in the upper floor.

I have basic requirements for my wireless router, no port forwarding, use dhcp, etc. My DSL modem is configured in bridge mode, the Linksys WRT400N handles DSL login. My DSL carrier is ATT.

I chose to configure the device via a browser, and not use the supplied utility. It was easy to do, took about 10 minutes. I am experienced in networks, though. So, no comments on the config utility.

The initial release of the device did have bugs. The one that affected me was that the browser interface would stop working, but come back at some stage. As of March 2010 there is updated firmware available on the Linksys web site, seems to have fixed my problem (and a lot of other bugs, apparently). My problem, however, did not effect the device's basic function, it still routed just fine.

The new firmware is solid, for me.

Here are the bugs the new firmware address'

Firmware version: v 1.0.02 B11

Added Windows 7 support
Fixed NVRAM miss issue
Added PPTP Forward function.
Fixed DHCP Reservation issue.
Fixed Multicast issue.
Fixed HTTPd response error issue
Fixed PPPoE keepalive issue
Fixed RIP static route issue
Fixed DynDNS/TZO update issue
Fixed Wireless WEP authentication in auto mode issue
Fixed MAC cloning invalid MAC address issue
Fixed MAC filtering issue with wireless clients
Fixed Port forwarding with overlapped port numbers
Fixed Web filtering ActiveX issue
Fixed WPS issue when router uses default settings
Fixed PING function stopping issue
Fixed Config restore warning when using an invalid config file

All in all, I am very satisfied with this router, and Amazon have a great price. I would recommend this device to friends.

I was disappointed with this router. I was not able to get the 5Ghz network to work and the 2.4Ghz network dropped often. I'm using a Linksys wireless adapter (WUSB600N) on my laptop which is 25ft from the router. I spent 3 hours on the phone with Linksys tech support. They had me try every possible combination of settings but never got it to work. I hate to be a downer but this was a big waste of my time.

You can't turn off the built in DHCP server. Even tho it is disabled the stupid thing keeps randomly handing out IP addresses. Port translation doesn't work. MAC address filtering doesn't work. Randomly locks up. Go read the support forums at Cisco --- never seen so many complaints on a product and completely worthless support suggestions from Cisco. This piece of crap is a joke. RUN RUN RUN. After dealing with this POS I would never buy Cisco/Linksys again!

We've purchased two of these routers, and while both work well, both were a headache getting to work. The first router would not work either wired or wirelessly; the second worked out of the box, but the connection was extremely slow. Fortunately, tech support from Linksys was very good, and the rep was able to quickly diagnose and instruct how to correct the setup. Once the setup issues were resolved, the routers have both worked great -- very fast and no problems at all.

I am happy with the 2.4N speed (it is sometimes faster than the Ethernet). It provides better signal at the same couch location than the WRT54G that it replaced, the setup was fast, the setup UI was simple and reliable. I did not see the same problems some of the other reviewers.

There is a single, significant problem so far. I am unable to connect to my workplace VPN. I have been able to isolate the problem to the WRT400N (swapping the router with a WRT54G resolves the problem). I have tried nearly every combination of settings. I finally discovered a web forum discussing this very problem. I am not sure if it is isolated to a small subset of all routers, but cisco as linksys does not seem to have any plans to fix this problem. Now to decide if I return it or just enjoy not working from home.