Any hope for gigabit WAN to LAN on a Netgear 6700v3?

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doctorpangloss
DD-WRT Novice


Joined: 12 Aug 2018
Posts: 10

PostPosted: Sat Aug 03, 2019 1:12    Post subject: Any hope for gigabit WAN to LAN on a Netgear 6700v3? Reply with quote
On a WAN to LAN 1 gigabit Sonic connection:

Code:
➜  ~ python speedtest-cli
Retrieving speedtest.net configuration...
Testing from Sonic.net (157.x.x.x)...
Retrieving speedtest.net server list...
Selecting best server based on ping...
Hosted by Comcast (San Francisco, CA) [3.54 km]: 3.844 ms
Testing download speed................................................................................
Download: 732.71 Mbit/s
Testing upload speed................................................................................................
Upload: 712.13 Mbit/s


Can I squeeze anything to get the last 280 megabits? Connecting directly to an Ubuntu host, I get the expected 980 mbits/s

SFE is enabled with firmware: DD-WRT v3.0-r39345M kongac (04/03/19)
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flyzipper
DD-WRT User


Joined: 21 Feb 2016
Posts: 412

PostPosted: Sat Aug 03, 2019 2:35    Post subject: Reply with quote
On my R7000 (uses the same Broadcom BCM4709A0 as your R6700), I can get performance in the 900's with the Xbox speed test, but only after I enabled IPv6 (I assume that's because there's no NAT overhead).
nolimitz
DD-WRT Guru


Joined: 26 Nov 2010
Posts: 572

PostPosted: Sat Aug 03, 2019 6:33    Post subject: Reply with quote
flyzipper wrote:
On my R7000 (uses the same Broadcom BCM4709A0 as your R6700), I can get performance in the 900's with the Xbox speed test, but only after I enabled IPv6 (I assume that's because there's no NAT overhead).


OP says the router is a R6700v3 which has a BCM4708C0, it also runs at 1Ghz but not sure if performance is the same.

R6700v1 has the BCM4709A0
egc
DD-WRT Guru


Joined: 18 Mar 2014
Posts: 6410
Location: Netherlands

PostPosted: Sat Aug 03, 2019 7:24    Post subject: Reply with quote
I have an R6400v2 (among others Smile)
This is the same router internally, so 1GHz dual core Arm A9.
Without SFE almos 300 Mb/s, With SFE almost 700 Mb/s

That is all you can get from this type of CPU with DDWRT.

Stock firmware (which has a proprietary SFE called CTF (Cut Through Forwarding) is faster, I have heard someone claiming 900 Mb/s but I have not tested it myself.

If you want faster you need a faster router Sad

_________________
Routers:Netgear R7800, R6400v1, R6400v2, Linksys EA8500, EA6900 (XvortexCFE), E2000 (converted WRT320N), WRT54GS v1.
OpenVPN Policy Based Routing: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=321686
Install guide R6400v2:http://forum.dd-wrt.com/phpBB2/viewtopic.php?t=316399
OpenVPN Server Setup:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=318795
Install guide R7800: https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=320614
Wireguard Server setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1183135
Wireguard Client setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324624
Wireguard Advanced setup guide:https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324787
Forum Guide Lines (important read):https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 7274
Location: Texas, USA

PostPosted: Sat Aug 03, 2019 15:13    Post subject: Reply with quote
I honestly haven't seen much difference between DD-WRT (SFE) and FreshTomato (CTF) on my speed tests. But, FT doesn't have all ARM Broadcom devices' detection and support added (yet).
flyzipper
DD-WRT User


Joined: 21 Feb 2016
Posts: 412

PostPosted: Sat Aug 03, 2019 21:23    Post subject: Reply with quote
nolimitz wrote:
OP says the router is a R6700v3 which has a BCM4708C0, it also runs at 1Ghz but not sure if performance is the same.

R6700v1 has the BCM4709A0


Good clarification, thanks.

I'd still try IPv6 to eliminate NAT overhead if OP is chasing higher numbers on his existing hardware.
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