[whgpjay]

I just bought a WRT54GL to replace my Verizon-supplied D-Link VDI-624 & installed v23 SP1 (generic, standard) on it. It's working great, except for the fact that I'm not reaching full download and upload speeds.

I have Verizon FiOS 30 Mbps down/5 Mbps up, but am only seeing speeds of around 23 Mbps down and 4 Mbps up. On the D-Link I was getting full speed.

Are there any tips to handle PPPoE better?

Thanks a lot!

[lawnmowerguy1]

have you tweeked for RWIN?

[whgpjay]

Wow, thanks for the quick response.

I looked in the GUI and didn't see anyplace to enter the receive window or other tweaks. Could you point me in the right direction?

[BG]

Using Ethernet I suppose?

Why don't you let the modem they provided do all the PPPoE work? Also, where is the Fiber Optic receiver located? What kind of hardware.

Interested...

[whgpjay]

There's an ONT (Optical Network Terminal) on the side of the house where the fiber connects to. From there there is Cat5 running into the house to my router (i.e. there is no modem).

Found this article in case you want to read more on the install: http://www.bricklin.com/fiosinstall.htm

[lawnmowerguy1]

http://www.google.com/search?hl=en&q=RWIN&btnG=Google+Search

[whgpjay]

Oh, i'm retarted. I've already done that on my computer in the past, thought there was something like that in the router as well. The settings I have in Dr. TCP (which were recommended by Verizon) are:

TCP Receive Window: 307824
Window Scaling: Yes
Time Stamping: Yes
Selective Acks: Yes
MTU: 1492

Everything else is just left at defaults.

[BG]

A quick fix would be setting the d-link to do the pppoe work (assuming the wrt's PPPoE is the culprit), then DMZ the WRT You might want to try this as a test, actually.

Is the PC you are using to speed test connected wirelessly? I hope not.

[WaS]

[BG]

The LIMITS? Can you please describe what's being said? I don't know german.

Is it stating that the WRT can't handle the load of encapsulating and deencapsulating PPPoE Frames any higher than 15 MBit?

[WaS]

In that thread, BS explains that the WRT54 has only one single ethernet
chip for all five ports, so you can't get 30+5Mbps simultaneously in and out.
He had measured a maximum througput of approximately 32Mbps.
Note "maximum" and "approximately"! There is the question whether
you have just reached the limits that apply under "real world" conditions,
or whether it should be possible to get still a little bit more through than
23+4Mbps.

As to the question of CPU load: Try to put the WRT behind the D-Link,
with a fixed WAN IP rather than pppoe, and turn off the firewall. Does
the speed improve under these conditions? BS wrote that the CPU is
not the problem, but this statement was referring to half of your througput.

[BG]

Well that's fairly dissapointing. Needs to be added to the wiki.

[HWS]

Here you can see, where the hardware differ and what model has a build in CPU Switch (managed switch):

TableOfHardware

[whgpjay]

I put the Dlink in front of the Linksys (using the Dlink as a gateway and Linksys as the router) and am getting normal speeds (with the firewall on the Linksys still turned on). Verizon is switching to DHCP soon, so hopefully that'll resolve the problem.

Thanks for all the help!

[WaS]

So it was obviously the CPU load caused by pppoe, that was limiting the
speed in your case. Good to know

Hmm... the alternative "RP-PPPoE" driver is already known to be too
CPU-hungry, but the default PPPoE module is really disappointing me now