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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: churin on January 09, 2015, 09:43:52 AM

Title: Does DIR655 slow down internet connection?
Post by: churin on January 09, 2015, 09:43:52 AM
I was getting stable ~28Mbps internet connection  at Atlanta with Comcast. I recently moved to Palo Alto/CA and upgraded the service plan with Comcast to 105Mbps provisioned speed. The measured speed was initially ~125Mbps but went down to 30 ~ 50Mbps. The speed initially noted could be recovered by power cycling the modem(Zoom 5341J) or the router(DIR655, HW V.B1, FW V.2.11NA).
The signal levels and the activity log shows nothing wrong or they are the same when the speed is normal or after the slow down happens.

Yesterday, I bypassed the router and now one computer is directly connected to the modem and the slow down has not happened since. I may have to wait one more day or so to conclude the experiment.  Please note when measuring the speed with DIR655 being used all network connected PCs were turned off  except the speed measuring PC.

I am beginning to suspect the WAN port speed handling capability of DIR655'.
Any comment or suggestion is appreciated.
Title: Re: Does DIR655 slow down internet connection?
Post by: FurryNutz on January 09, 2015, 09:51:39 AM
Link>Welcome! (http://forums.dlink.com/index.php?topic=48135.0)

>FW Update Process (http://forums.dlink.com/index.php?topic=42457.0)

Internet Service Provider and Modem Configurations

I recommend that you have your ISP check the cabling going to the ISP modem, check signal levels going to the ISP modem. For DSL or Fiber service lines, ensure that the ISP is using good working phone or cable lines to the DSL modem and that the phone lines are filtered correctly. For cable Internet, RG-6 coaxial cable is needed, not RG-59. Check for t.v. line splitters and remove them as they can introduce noise on the line and lower the signal going to the ISP modem. I recommend having the ISP service physically check the lines going from the out side to the ISP modem. Connecting to the ISP modem could result in a false positive as the signal to the modem could be just enough to that point then adding on a router, could see problems. The router operation is dependent upon getting good data flow from the ISP modem and the modem is dependent upon getting good signal from the ISP Service.

Router and Wired Configurations
Some things to try: - Log into the routers web page at 192.168.0.1. Use IE, Opera or FF to manage the router. Besure to log into the Admin account on the router.