50% bandwidth loss through router

samfreese · 11-27-2008, 10:27 PM

So I have a cool problem. I get a 50% bandwidth loss whenever I hook up to the 'net with my router. The connection goes: cable modem => wireless router => computer. When I go straight from the cable modem, I get 16 megs/sec. However when I go through my wireless router(but still connected through cat5e) I get around 7 megs/sec. The router also has DD-WRT running on it. Any ideas how to help? I really like my wifi because it's nice and convenient, but a 50% bandwidth loss is crazy. I'm stuck and don't know what to do. Thanks for all your help. Cable modem is a Motorola Surfboard 5100 and the router is a Linksys WRT54g version 5 running DD-WRT v23 SP1 micro

amps1512 · 11-28-2008, 06:41 AM

Disable all updates from the Router. then test the connection speed when you are in perfect range of Wireless strength, and dont forget to secure the wireless connection.

samfreese · 11-28-2008, 07:32 AM

I changed my key(just to be on the safe side) but I don't know what you mean my disable all the updates? Could you explain that? Thank you!

amps1512 · 11-28-2008, 08:37 AM

Routers have ability to connect with other resources in a network sometimes to upgrade firmware or routing tables, to eliminate that as a cause for bandwidth loss.

**sobeit** · 11-28-2008, 08:43 AM

Quote:

Originally Posted by samfreese

However when I go through my wireless router(but still connected through cat5e)

are you saying your computer is still plugged into the cat5e while you are trying to use wifi? If so, unplug the cable and see if it helps. Also how far is the computer from the router? Any other wireless systems in the house, whether it be phones, home threater speakers, etc?

**johnwill** · 11-28-2008, 01:01 PM

Have you tried this experiment with wired connections to see if this is simply a wireless issue or something about the router?

samfreese · 11-28-2008, 01:31 PM

Im using the cat5e wired to the computer. There is no wifi card in the computer. I'm getting the loss through the router. If I go just straight modem to computer I clock the right rate. Anybody know how to get DD-WRT to stop trying to update itself or look so hard for other resources? I mean it's eating 9 megs of connection speed(I have a 16meg connection; I clock 7 through the router).

krazyko · 11-28-2008, 04:12 PM

Check the MTU settings on the router. It might be set incorrectly.

samfreese · 11-29-2008, 12:21 AM

I think I'm going to give up..There is a place around me where I can pick up used wifi routers for $5. Played with every setting I could, set the whole thing back to defaults, etc... Thanks for the tips all!

11-27-2008, 10:27 PM	#1 (permalink)
samfreese Registered User Join Date: Nov 2008 Posts: 4 OS: windows XP Pro SP3	50% bandwidth loss through router So I have a cool problem. I get a 50% bandwidth loss whenever I hook up to the 'net with my router. The connection goes: cable modem => wireless router => computer. When I go straight from the cable modem, I get 16 megs/sec. However when I go through my wireless router(but still connected through cat5e) I get around 7 megs/sec. The router also has DD-WRT running on it. Any ideas how to help? I really like my wifi because it's nice and convenient, but a 50% bandwidth loss is crazy. I'm stuck and don't know what to do. Thanks for all your help. Cable modem is a Motorola Surfboard 5100 and the router is a Linksys WRT54g version 5 running DD-WRT v23 SP1 micro

11-28-2008, 06:41 AM	#2 (permalink)
amps1512 Registered User Join Date: Nov 2008 Posts: 6 OS: WINXP	Re: 50% bandwidth loss through router Disable all updates from the Router. then test the connection speed when you are in perfect range of Wireless strength, and dont forget to secure the wireless connection.

11-28-2008, 07:32 AM	#3 (permalink)
samfreese Registered User Join Date: Nov 2008 Posts: 4 OS: windows XP Pro SP3	Re: 50% bandwidth loss through router I changed my key(just to be on the safe side) but I don't know what you mean my disable all the updates? Could you explain that? Thank you!

11-28-2008, 08:37 AM	#4 (permalink)
amps1512 Registered User Join Date: Nov 2008 Posts: 6 OS: WINXP	Re: 50% bandwidth loss through router Routers have ability to connect with other resources in a network sometimes to upgrade firmware or routing tables, to eliminate that as a cause for bandwidth loss.

11-28-2008, 01:01 PM	#6 (permalink)
johnwill Manager, Networking Forums Join Date: Sep 2002 Location: S.E. Pennsylvania, US Posts: 41,787 OS: Windows 7, XP-Pro, Vista, Linux Blog Entries: 1	Re: 50% bandwidth loss through router Have you tried this experiment with wired connections to see if this is simply a wireless issue or something about the router? __________________ If TSF has helped you, Tell us about it! or Donate to help keep the site up! Microsoft MVP - Windows Desktop Experience

11-28-2008, 01:31 PM	#7 (permalink)
samfreese Registered User Join Date: Nov 2008 Posts: 4 OS: windows XP Pro SP3	Re: 50% bandwidth loss through router Im using the cat5e wired to the computer. There is no wifi card in the computer. I'm getting the loss through the router. If I go just straight modem to computer I clock the right rate. Anybody know how to get DD-WRT to stop trying to update itself or look so hard for other resources? I mean it's eating 9 megs of connection speed(I have a 16meg connection; I clock 7 through the router).

11-28-2008, 04:12 PM	#8 (permalink)
krazyko Registered User Join Date: Nov 2008 Posts: 97 OS: 2000 SP4, XP Pro SP2&SP3, 2003	Re: 50% bandwidth loss through router Check the MTU settings on the router. It might be set incorrectly.

11-29-2008, 12:21 AM	#9 (permalink)
samfreese Registered User Join Date: Nov 2008 Posts: 4 OS: windows XP Pro SP3	Re: 50% bandwidth loss through router I think I'm going to give up..There is a place around me where I can pick up used wifi routers for $5. Played with every setting I could, set the whole thing back to defaults, etc... Thanks for the tips all!