More information can be found in this OSX Network Tuning Guide. # 4G seems to be the limit for some OSX installations # for 10G hosts it would be nice to increase this too, but It is suggested to apply these settings to /etc/nf, and reboot: # OSX default of 3 is not big enoughĪpply these settings to /etc/nf, and reboot: # SX default of 3 is not big enough These versions of OSX comes with the following defaults: _scale_factor: 3 (or 5 in newer versions) Settings for OSX Yosemite/Mavericks/Sierra If websites, email, and all other internet services remain unavailable after connecting to Wi-Fi, try the following solutions. To connect to a Wi-Fi network, click Wi-Fi in Control Center or the menu bar, then choose a network from the menu. Be sure to set _scale_factor as shown below. To connect to the internet over Wi-Fi, your Mac must first be connected to a Wi-Fi network, and that network must provide a connection to the internet. Unfortunately they also reduced the default win_scale_factor to 3, which prevents the TCP window from ever going above 512K. Starting with OSX 10.5, Apple added "self tuning TCP", and increased the default maximum socket buffer to 4MB, a much more reasonable value. Do not make these changes on laptops that connect via WIFI. Note that most of the tuning settings described here will actually decrease performance of hosts connected at rates of 100 Mbps or less, such as home users on Cable/DSL connections. Networksetup has many other uses and extremely advanced features aimed at advanced Mac users, you can find some of the other tricks we’ve covered using the networksetup utility here.This page contains information on tuning Mac OS X hosts connected at speeds of 1Gbps or higher. More simply, it also makes it simple to find the device interface, which is necessary if you’re trying to connect to wifi networks from the command line using the same networksetup command. ![]() On the other hand, if you know for certain that a piece of hardware is connected but it’s still not showing up, that could point to a hardware problem either with the network card, or with the interface itself. Using “networksetup -listallhardwareports” can be an excellent trick for troubleshooting network devices and connections, particularly if a hardware interface appears to be nonexistent or is having problems.įor example, if a connection is failing to work because you can’t find a specific networking device in Network preference panel of Mac OS X, you can check to see if something like a wifi card is found here, and if so, try to power-cycle it off and on again, which often resolves many of those simple detection problems. What’s not listed in the hardware report are external devices that are connected through the networking interfaces, meaning things like routers, relays, switches,any iPhone Personal Hotspot, and tethered or wireless Android hotspots, because those are not considered native hardware, though you can retrieve that data with networksetup as well. You will see something like the following reported back, which displays the hardware port (which in this case is basically the user friendly name of the interface, like Wi-Fi, Bluetooth, Thunderbolt, Ethernet, etc), the device interface (en1, en0, en3, bridge1, usb1, etc), and the hardware address of the device, called Ethernet Address here, but you may know it better as a devices MAC address, which can be important to know for address filtering and spoofing. Remotely get OSX hardware information, software installs and more. To see what networking hardware is connected to a given Mac, simply issue the following command string into the Terminal: How to remote scan all Mac OS X Computers in your Network with Lansweeper. How to List All Network Hardware on a Mac via Command Line
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