User Guide Appendix
APconnections, Inc. // 303.997.1300 // www.netequalizer.com
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Copyright © 2014, 2015 APconnections, Inc.
rev. 20150309
Appendix 2 - Setting/Forcing LAN Speeds and Duplex
Occasionally you need to manually set LAN Port Speed and Duplex in order for the
NetEqualizer to operate at the expected port speeds and in the correct duplex mode.
The NetEqualizer LAN ports auto-negotiate 95% of the time. However, the NetEqualizer
may need to be manually set to work with some Routers or Switches. Symptoms that you
need to set your LAN Port Speed and Duplex are that you are having collisions and/or
dropping packets. Both these symptoms will make your network throughput less than
expected.
Note: Although dropped packets are not a good thing, if you are seeing less than 1/10 of a
percent (< 0.1%) of the total packets transmitted it will have no adverse effect on your
network. If it starts to approach 1 percent (1%), you should follow these instructions.
To Check Your Current Port Speeds
From the Maintenance and Reference Menu,
Click on ->
Maintenance
->
[
Run a
Command
]
to run the following commands:
To see if your ports are dropping packets or having collisions, run:
/sbin/ifconfig
To see what your ports' details are run the following commands:
/usr/sbin/ethtool eth0
and
/usr/sbin/ethtool eth1
You can also run these commands by clicking on “To get the current connection speed of the
network interfaces:” button.
To Set Your Port Speed and Duplex Mode
From the Maintenance and Reference Menu,
Click on ->
Maintenance
->
[
Run a
Command
]
to run the following command:
/usr/sbin/ethtool -s DEVNAME \ [ speed 10|100|1000 ] \[ duplex half|full ] \ [ autoneg
on|off ]
Here are some examples to force a WAN interface to a certain speed and full duplex:
/usr/sbin/ethtool -s eth0 speed 1000 duplex full autoneg off
/usr/sbin/ethtool -s eth1 speed 1000 duplex full autoneg off
eth0 should be WAN and pointed towards the Internet. eth1 should be LAN and going into
your internal network.
To Put Your Port Speed and Duplex Mode in Auto Startup File
(recommended)
We recommend that you add these commands to your Autostart file, after you have verified
that the change is set the way that you would expect and works on your network.
From the web GUI:
From the Maintenance and Reference Menu,
Click on ->
Maintenance
->
[
Edit Autostart
File
] -> [
Edit
].
