BreadCrumbs: Change MTU Size

Change MTU Size

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Contents

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Windows XP

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Linux

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Mac OS X

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Summary

You may run into situations where the internet connection has a high rate of error or has a lower MTU size enforced than the Mac OS X default. By altering the MTU size on the active local interface it is possible to overcome such problems. This tutorial will walk you through changing your MTU size temporarily.

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Requirements

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Procedure

  • Enter the command below to gain root privileges: 
sudo -s
  • Enter your administrator password when prompted and press return
  • Determine the interface you would like to change the MTU on with the command below: 
ipconfig
  • Set the MTU on the interface you chose with the command below: 
ifconfig <interface> mtu <size>
  • Default MTU Size (Ethernet): 1500
  • Recommended Change (Ethernet): 1480
  • To check that everything worked correctly type the command below: 
ifconfig <interface> ¦ grep mtu
  • If a line is returned with the MTU size you set in the step above then everything worked correctly.
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External Links

Change MTU Size Mac OS X Permanently

Retrieved from "http://wiki.ljackson.us/Change_MTU_Size"
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