Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade the memory of your 2018 Mac mini up to 64GB

How to Prioritize Network Interfaces for Peak Performance

Last updated 2015-02-15 - Send Feedback
Related: how-to, iPhone/iPad, Thunderbolt, USB
Four networking services simultaneously active

Connecting to the internet and/or local network could mean using any of the following:

  • Direct Thunderbolt 2 networking;
  • Gigabit ethernet;
  • Gigabit ethernet via Thunderbolt adapter.
  • WiFi at home;
  • WiFi on the road;
  • Personal Hotspot via iPhone or similar using BlueTooth (not recommended) or USB cable (yes).
  • USB adapters of various sorts;
  • Other speciality approaches.

Shown below are four active network interfaces (and four inactive ones):

There is generally no need to have all of these interfaces active, but they will be active by default if not disabled. Some can be disable and they can also be prioritized (more on that below).

Four networking services simultaneously active

Disable unused interfaces

Disabling a network service

Prioritize gigabit ethernet over any wireless interface, for its speed and reliability*.

Some Macs might be connected in one and only one way to the network, e.g., gigabit ethernet or WiFi. For Macs always connected to a single interface, disable all other interfaces—job done.

Since all network interfaces are enabled by default, Macs connected to both gigabit ethernet and a WiFi network may default to Wifi as a priority, thus effectively ignoring the gigabit ethernet connection and robbing performance (an Apple bug in OS Yosemite as this was written).

* There are exceptions; gigabit ethernet could be wired to the internet via a slow gateway Or public WiFi could be far slower than an LTE-based personal hotspot through an iPhone. In other words, actual speed vs the potential speed of the network connection.

Make an Old Dog Run Like a Young Puppy
with an OWC SSD

SATA, USB3, Thunderbolt, internal upgrades and PCIe SSD options for Mac or PC.
View All OWC SSDs...

Prioritizing which connection to use

For security reasons when traveling, etc, MPG recommends avoiding public WiFi hot spots, and instead using a personal hotspot via a USB cable (not BlueTooth) to an iPhone or similar device (assuming availability of a fast 4G or LTE cell phone service).

Disabling a network service

Road warriors may at times be connected to gigabit ethernet, various WiFi hot spots, or a personal hotspot. Connecting to gigabit ethernet is always preferred for speed and reliability (barring it itself being connected to a slow internet gateway).

Shown below are four active network interfaces.

Confusingly, the priority shown in the control panel is NOT the order of priority; for that one must choose Set Service Order, more on that below.

It is possible to prioritize network interfaces into the optimal order, yet leave all of them active, a convenience over enabling and disabling interfaces each time a change happens (e.g., home/work/travel with a laptop).

Prioritizing which connection gets used

Clicking the small “gear” at bottom shows the network priority.

Drag network interfaces within this window in order to prioritize the order of network connections. Unfortunately, the main window fails to display the services in this order (very confusing).

For example, if gigabit ethernet is the top priority (top of the list), it will be used preferentially over the others (lower in the list)—when avaialable. Thus once at home or office with gigabit, just plug in the cable and gigabit is used; disconnect to travel or sit on the couch and WiFi or other will be used—convenient.

Drag to prioritize the order of network connection

 

Apple MacBook 12-inch, Mid 2017 (Current Model)

$1599 Only $999

1.3 GHz i5, 8GB, 512GB SSD
Apple Refurbished, Factory Sealed, Apple 1 Year Limited Warranty
128GB Memory in iMac 5K

Up to 128GB for 2019 iMac 5K!
Up to 64GB for 2015/2017 iMac 5K

Save nearly 50% over Apple pricing

Save the tax, we pay you back, instantly!
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 21 hours unless noted. Certain deals may last longer.
$2797 SAVE $600 = 17.0% Nikon Z 7 Mirrorless in Cameras: Mirrorless
$2798 SAVE $400 = 12.0% Sony a7R III Mirrorless in Cameras: Mirrorless
$3498 SAVE $1000 = 22.0% Sony a9 Mirrorless in Cameras: Mirrorless
$898 SAVE $100 = 10.0% $164 FREE ITEMS Sony DSC-RX100 VA in Cameras: Point and Shoot
$1879 SAVE $1071 = 36.0% ZEISS 15mm f/2.8 Distagon T* ZE in Lenses: DSLR

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__