I believe the 6300v2 ac1450 r6250 ext200 are all the same hardware and no that hardware does not have FA. But it's Broadcom so CTF will be available after the second reboot. I would strong recommend the very latest build. The nvram settings don't mean anything. What matters is after the second reboot telnet into the router and run dmesg and look in the kernel modules directory. If you have ctf.ko in that directory and if you see an attach for CTF in the dmesg then you are go for CTF. If you see an attach for FA then you are go for FA and CTF.
Looks to be good to go after flashing the latest beta.
Code:
# dmesg | grep FA
attaching FA
attaching FA
FA Core Detected!
I don't know about hairpinning but I would absolutely expect that it would not work. Hairpinning really only has 1 legitimate use and that's for "NAT on a stick" devices where they are using a single ethernet port as both the in and out port and doing NAT inside the device. Back in the day someone worked out a config for using NAT in Cisco IOS this way as a way of getting some mileage out of Cisco devices like the 1601 which has only a single 100baseT ethernet port and a slow WAN port. I think they also did it to say "in your eye, Cisco" Nat on a stick is such an inefficient hack anyway that adding more nonsense to it isn't going to make a difference.
But every other time I've seen hairpinning used it was because the network admin was too lazy to run an internal DNS server and fix it the correct way like you did. Hairpinning chews up CPU unnecessarily on the router and the point of CTF is to remove the inefficiencies in the IP stack and it would be contradictory to support it in CTF. Sort of like emissions controls on a Formula 1 racecar.
I DID find out that the Netgear AC1450 _does_not_ have FA hardware while the Netgear R6300V2 _does_ have FA hardware, despite the claim in the dd-wrt wiki that the 2 routers use the same hardware.
Posted: Mon Jan 10, 2022 23:59 Post subject: Flow Acceleration Still not Available on R8000
Flow acceleration is still not available on the R8000. It is detected in the syslog, should be available on the BCM4709, but never shows up in the UI no matter how many reboots, and if forced by changing the NVRAM variables, the router becomes unresponsive. I believe it may be a problem with the switch configuration, as the switch config page shows a port that is down, which does not match up to a physical port and might be the offload processor.
I read your write-up in preparation for next week for when I should be getting Verizon fiber. I have a ddwrt build installed on my Netgear 63000v2 that was posted before the check for CTF and FA was implemented, but the processor is on the northstar list and nvram settings are ctf_disable=0 and ctf_fa_mode=2. It should be all good...
I believe the 6300v2 ac1450 r6250 ext200 are all the same hardware and no that hardware does not have FA. But it's Broadcom so CTF will be available after the second reboot. I would strong recommend the very latest build. The nvram settings don't mean anything. What matters is after the second reboot telnet into the router and run dmesg and look in the kernel modules directory. If you have ctf.ko in that directory and if you see an attach for CTF in the dmesg then you are go for CTF. If you see an attach for FA then you are go for FA and CTF.
I don’t follow. The AC1450 Broadcom CPU is on the Northstar list. Why wouldn’t it support FA?
Joined: 08 May 2018 Posts: 14125 Location: Texas, USA
Posted: Thu Mar 31, 2022 19:24 Post subject:
I will consult with BrainSlayer as to which devices support FA. Considering that FA may only support specific revisions of CPU only, it just may be that it is what it is.
EDIT: Nevermind, not going to waste my time.
BrainSlayer wrote:
in newer builds FA support will be detected. originally i added it unconditional for all devices. later i found out that flow acceleration is not supported on all northstar cpu types. the state of the support can be checked with the nvram variable "ctf_fa_cap"
of course you can override it by setting it to 1.
Posted: Mon Oct 31, 2022 15:35 Post subject: 2 different R7800 - only one shows the option for FA
Running R7800 on DD-WRT v3.0-r49492 std (07/14/22)
egc wrote:
Netgear R6400v1:
Quote:
root@R6400v1:~# dmesg | grep FA
attaching FA
attaching FA
FA Core Detected!
root@R6400v1:~#
One router shows SFE, and STP as options. The other shows SFE, FA and STP as options. Neither router shows FA in the dmesg.
Can someone please help me understand why I might get two different results from 2 different routers that are the exact same model? (R7800) Is there a separate submodel? Do I need to do a factory reset or something?
I would like to test flow-acceleration.
Thanks!
Last edited by x53sv on Mon Oct 31, 2022 15:43; edited 1 time in total
Joined: 18 Mar 2014 Posts: 12837 Location: Netherlands
Posted: Mon Oct 31, 2022 15:46 Post subject:
What do you mean exact the same model?
To me they look like completely different models.
See the forum guidelines with helpful pointers about how to research your router, where and what firmware to download, where and how to post and many other helpful tips:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Posted: Mon Oct 31, 2022 18:04 Post subject: See attached images - both routers are R7800 - one shows FA
egc wrote:
What do you mean exact the same model?
To me they look like completely different models.
See the forum guidelines with helpful pointers about how to research your router, where and what firmware to download, where and how to post and many other helpful tips:
https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=324087
Not looking for firmware, but thank you. This question was regarding testing FA. Hopefully that's ok. I have 2 exact same model routers. 1 shows the FA option, the other does not. I configured both from scratch.
However, I take your point. R7800 should not have FA. Thank you for that. So is this a bug that I should report somewhere?