[AlanTheBeast]

What I have: LinkSys(Cisco): E4200 (V1)

What was loaded: Tomato (Sabai).

Issue: wouldn't run at 1 Gb/s speed. (Limited to 100 Mb/s).

What IS loaded: LinkSys(Cisco) latest f/w. Works fine (ish). But private-class-C only (255.255.255.0). Setting a 255.0.0.0 mask is not possible. (But certainly handles G-bit/s speeds).

Options:
Q) Put in DD-WRT
7) Put in Tomato

Why? I want a class-A network (which I had with the Sabai(Tomato) load).

Why DD-WRT: Why not?

Why Tomato: Why not?

Not looking for a food fight. If DD-WRT will do the job and give me a class A network then that's pretty much it. (And G-bit speeds, of course). Also looks to me like loading DD-WRT into the router is simpler (2 f/w load steps) than Tomato (can't really tell - the Tomato site is so full of 23 "do this first" tips that it's hard to tell where and what needs to be done).

Thanks for your replies!

[Alozaros]

with this old single core slow CPU router, Gigabit speeds are not possible, only on switch mode over LAN (may be but not even close)!!!
otherwise Gigabit speeds are limited to only few routers dual or quard core CPU ... Netgear R7800 or R9000...
recently SFE NAT acceleration was introduced to DD-WRT so much better WAN performance is offered, the down bit is its not working in correlation with QoS yet...
DD-WRT has updates more often than Tomato or any other 3rd party firmware...

[AlanTheBeast]

[Alozaros]

1Gbit is only the switch speed in switch mode, your CPU is 480Mhz witch is old and slow but i guess it'll handle around 60Mbit with no hassle im not sure if you can make it to 120Mbit WAN with use of SFE on the last build....

am I clear now that you have an old router and need new one to be able to utilise high WAN speeds???

[AlanTheBeast]

[AlanTheBeast]

So, firmware upgraded the E4200 with dd-wrt.v24-21676_NEWD-2_K2.6_mini-e4200 as a stepping stone to a later version. Worked fine, but download was a mere 65 Mb/s where I'm expecting at least 130 Mb/s.

Then updated the firmware to dd-wrt.v24-21061_NEWD-2_K2.6_big-nv60k and was unhappy to see that it too could only manage 60 Mb/s or so.

In both cases the Mac was in 1000baseT.
In both cases Speedtest was with a test site nearby and that always yields high DL rates in Speedtest. (For that matter, Montreal to London I get 130 Mb/s after about 5 - 10 seconds with the Linksys F/W).

Finally, put back the Linksys latest firmware ( Linksys-FW_E4200_1.0.06.003_US_20140520_code ) and the router happily spits 135 Mb/s.

Indeed, I'm wondering if my over generous ISP will give me even more B/W if I go buy an up to date router .... (plan is 120 Mb/s but I'm getting 10% better).

So DD-WRT is not for this router, alas.

My principal problem is getting back to a class A setup, so I guess a new router is in the cards if I want both max speed from the modem and class A.

Thanks for your replies Alozaros.

/out

[Alozaros]

ftp://ftp.dd-wrt.com/betas/2017/10-10-2017-r33492/broadcom_K3X/dd-wrt.v24-33492_NEWD-2_K3.x_mega-e4200.bin

this is the last build for E4200 you can try it on your responsibility, as i said you can try SFE feature turned on and might get better speed but this router is just morally old, although it can run full speed with stock firmware it will struggle with modern day WAN speeds...
the best choice is get a new router something in range of
Netgear R6400, R7000, R7500, R7800, R9000 all this routers have a great DD-WRT support and stability, just depends on the cash you can spend and performance you are after....

[AlanTheBeast]