v6.3 on RB2011 Ethernet CPU Usage 1.5 to 2.0% while idle

Anyone else seeing this? Since upgrading from 6.1 to 6.3 my idle box went from 99.5% idle to 97.5 to 98%… with 1.5 to 2.0% now being used by “ethernet”. Anyone seeing this also?

-Eric

Try disabling the LCD. Also when you say idle, is the unit connected to a cable or DSL modem? Those things are anything but idle, they constantly send packets to your WAN interface.

LCD is disabled. It is connected with no traffic. I suppose even if there was traffic why would the usage change from 0% to 2.0% by just upgrading from 6.1 to 6.3?

Also unplugged everything (Internet, etc) except my laptop and checked… just sitting here ethernet is using 1.5%

It could be services … DHCP for example or bridge ports. Anything else that expects the port to be up and running. If you’re up for testing try turning off just about everything … here is the config I use. By the way I have not unplugged my unit to see if I’m having the same usage as you.

  1. Turn off bridge ports along with all of these
# Open ports to remote control the router
/ip service
set telnet  disabled=yes
set ftp     disabled=yes
set api     disabled=yes
set api-ssl disabled=yes

# Disable neighbor interfaces. Winbox uses this to "find" routers.
/ip neighbor discovery
set ether-WAN discover=no
set ether-LAN discover=no
set ether3    discover=no
set ether4    discover=no
set ether5    discover=no
set ether6    discover=no
set ether7    discover=no
set ether8    discover=no
set ether9    discover=no
set ether10   discover=no
set sfp1      discover=no

# nat helpers
/ip firewall service-port
set ftp  disabled=yes
set tftp disabled=yes
set irc  disabled=yes
set h323 disabled=yes
set sip  disabled=yes
set pptp disabled=yes

# This is the BTest server
/tool bandwidth-server
set enabled=no

I may try that later when the box isn’t in use.

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