EEE is off...Why ?

[VANT]

Hello.
I wonder why asus will not enable the eee (Energy Efficient Ethernet) option in the AC86.
In my case, it lowers the temperature by about 2 degrees.
Does anyone have any information on this?

Power Management Configuration
Functional Block           Status
CPU Wait                   ENABLED
Ethernet Auto Power Down   ENABLED
Energy Efficient Ethernet  DISABLED
Switch Deep Green Mode     ENABLED (status:Deactivated)

eee off

VANT@RT-AC86U-BE80:/tmp/home/root# cat /sys/class/thermal/thermal_zone0/temp | awk {'print $1 / 1000}'
77.289

eee on

VANT@RT-AC86U-BE80:/tmp/home/root# cat /sys/class/thermal/thermal_zone0/temp | awk {'print $1 / 1000}'
75.817

Does eee cause any negative effects?

 

[RMerlin]

Possibly for latency reasons, which can be important in a router.

 

[follower]

Hello.
I wonder why asus will not enable the eee (Energy Efficient Ethernet) option in the AC86.
In my case, it lowers the temperature by about 2 degrees.
Does anyone have any information on this?

Power Management Configuration
Functional Block           Status
CPU Wait                   ENABLED
Ethernet Auto Power Down   ENABLED
Energy Efficient Ethernet  DISABLED
Switch Deep Green Mode     ENABLED (status:Deactivated)

eee off

VANT@RT-AC86U-BE80:/tmp/home/root# cat /sys/class/thermal/thermal_zone0/temp | awk {'print $1 / 1000}'
77.289

eee on

VANT@RT-AC86U-BE80:/tmp/home/root# cat /sys/class/thermal/thermal_zone0/temp | awk {'print $1 / 1000}'
75.817

Does eee cause any negative effects?

If you enable it your internet connection is disconnected intermittently. CISCO Switches(Default Disabled) and other vendors make same issue if it's enabled. Energy Efficient Ethernet is useless in most cases.

 

[VANT]

in my smart managed switch (zyxel 24 port) is on by default

 

[FernandoF]

In my case, it lowers the temperature by about 2 degrees.

When I started using LAN1 as the Secondary WAN port for my Dual WAN configuration, I also noticed an increase in the CPU temperature. By enabling EEE, I get the exact same 2-degree decrease you're reporting. Whether this is relevant is of course debatable, but I've been keeping it enabled anyway.

If you enable it your internet connection is disconnected intermittently. CISCO Switches(Default Disabled) and other vendors make same issue if it's enabled. Energy Efficient Ethernet is useless in most cases.

I've been running my AC86U with EEE enabled for almost 9 months now, and I've never noticed any internet disconnections. Do you get any errors in your log?

Possibly for latency reasons, which can be important in a router.

I apologize for my inexperience, but would this higher latency translate to increased ping times? If not, is there any specific way to observe it?

 

[RMerlin]

I apologize for my inexperience, but would this higher latency translate to increased ping times? If not, is there any specific way to observe it?

It's just a theory. It could mean a slight increase in ping time, or when switching between power state, or a delay between packets which would result in a drop in throughput.

I don't know what are the potential impacts of EEE.

 

[FernandoF]

I see. Thank you.

 

[follower]

I've been running my AC86U with EEE enabled for almost 9 months now, and I've never noticed any internet disconnections. Do you get any errors in your log?

I'm not talking about ASUS Router but a Cisco switch. I can show you for future reference. It works fine without EEE.

Cisco Log: EEE Enabled.
When it's disconnected you will see following log.
STP port state is set to Disabled
link down

Solution: Disable EEE.