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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: liuke on May 22, 2010, 08:09:36 PM

Title: DIR 655 frequently disconnects
Post by: liuke on May 22, 2010, 08:09:36 PM: Hi all,

I bought a DIR 655 (hardware version A4) recently and I flashed it to firmware 1.33NA (however, it still shows the version number 1.32NA on the configuration page).

Both before or after flashing the firmware, it was very unstable and disconnects the wireless frequently. Anyone has an idea on why it happens and what I could do to fix it? Thanks a lot.

Below is some of my configurations to the router:
DHCP
Advanced DNS Service:    disabled
MTU:    1500
802.11 Mode:    Mixed n and g
Auto Channel Scan:    disabled
Wireless Channel:    8
Transmission Rate:    Best (automatic)
Channel Width:    Auto 20/40
Security Mode:    WPA personal
WPA Mode:    auto (WPA or WPA2)
Cipher Type:    TKIP and AES
DHCP Server:    enabled
Always broadcast:    yes
NetBIOS announcement:    yes
NetBIOS node type:    Broadcast only (use when no WINS servers configured)

Transmit Power:    High
Beacon Period:    100
RTS Threshold:    2346
Fragmentation Threshold:    2346
DTIM Interval:    1
WLAN Partition:    disabled
WMM:    enabled
Short GI:    disabled
Extra Wireless Protection:    disabled

Virtual server and port forwarding: some ports

Qos:    some rules
   Traffic Shaping:    enabled
   Automatic Uplink Speed: enabled
   Connection Type:      auto detect
   QoS Engine:    enabled
   Automatic Classification:    enabled
   Dynamic Fragmentation: enabled

Application rules, network filter, access control, website filter, inbound filter, routing: empty

SPI:    enabled
   UDP Endpoint Filtering:    Address Restricted
   TCP Endpoint Filtering:    Port And Address Restricted
   Anti-spoof checking:    disabled
   DMZ:    disabled
   PPTP, IPSec, RTSP, SIP: enabled

WISH:    enabled
   Priority Classifiers:    Automatic

Wi-Fi Protected Setup: enabled
UPnP:    disabled
WAN Ping Respond: disabled
WAN Port Speed: Auto 10/100/1000Mbps
Multicast Streams:    enabled
Securespot™ services: disabled
Guest zone:    disabled
NTP Server:    disabled
Logging To Syslog Server:    disabled
Email Notification:    disabled
Dynamic DNS: disabled
Title: Re: DIR 655 frequently disconnects
Post by: davevt31 on May 22, 2010, 10:29:57 PM: Do a Factory Reset and then reflash. Save your config file, do reset, flash, and then restore config.
Title: Re: DIR 655 frequently disconnects
Post by: liuke on May 22, 2010, 11:21:22 PM: I did reset before, to solve an annoying bug. So reset has no use.

The bug is: once I set NTP server, I couldn't set it back to disabled. I wonder who is the writer of the firmware. Why don't you do enough test before releasing such kind of garbage.
Title: Re: DIR 655 frequently disconnects
Post by: Sammydad1 on May 23, 2010, 12:24:35 AM: try multiple hard resets one after the other....

hold the reset buttonin for like 30 seconds....
Title: Re: DIR 655 frequently disconnects
Post by: liuke on May 23, 2010, 12:42:15 AM: Incorrect firmware version number is not an important problem. The problem really annoying is it disconnects very often. Even before I flashed the firmware it already has such kind of problem.

I wonder if there is something wrong in the configuration I posted.
Title: Re: DIR 655 frequently disconnects
Post by: liuke on May 23, 2010, 01:32:22 AM: Seems hard reset makes the version number correctly displayed. However, the disconnection issue is still there and quite annoying. So hard reset doesn't work at all. Anyone has any other ideas?
Title: Re: DIR 655 frequently disconnects
Post by: kthaddock on May 23, 2010, 07:06:49 AM: Only use:
WPA Mode:(WPA2)
Cipher Type:(AES)
channel: 1-6-11
channel is +-22Mhz and they overlapping each other.

Test that. :o
Title: Re: DIR 655 frequently disconnects
Post by: liuke on May 23, 2010, 12:17:29 PM: Hi kthaddock,

What do you mean by 1-6-11, do you mean choose either 1 or 6 or 11?
Title: Re: DIR 655 frequently disconnects
Post by: motonut on May 23, 2010, 04:00:24 PM: OS : Mac OS X, 10.5.8
Router : DIR-655
Firmware Version : 1.34NA
Hardware Version : A4

I've had the 655 for about 6 mos. now, no problems at all until this w/e. I updated the f/w from 1.32NA to 1.34NA this past Fri. (2 days ago) and now I can't connect to the web if I leave the Mac for a couple of hours. I did not have the problem previously. Power cycle the router (not the DSL modem) gets me connected again.

Yes, I saved the settings before updating and restored the settings after, no settings were changed.

I'm on DSL, the Mac is ethernet connected, haven't tested wireless function yet.
Title: Re: DIR 655 frequently disconnects
Post by: kthaddock on May 24, 2010, 01:06:32 AM: Quote from: liuke on May 23, 2010, 12:17:29 PM
Hi kthaddock,

What do you mean by 1-6-11, do you mean choose either 1 or 6 or 11?

YES !
Title: Re: DIR 655 frequently disconnects
Post by: Tired Techie on May 25, 2010, 09:17:38 PM: Do you have any Windows 7 machines. If so, you may be the victim of the "wireless restart".

I recently put a Windows 7 machine (hardwired) on my network. Windows 7 uses IPv6 which confuses the router and causes it to restart the wireless connections often - thus the dropped connections seen on the wireless. The evidence of the wireless restarts is seen in the router log file.

I turned off IPv6 on Windows 7 and the problem seems to be gone.