Feb 192008

Maximum Transmission Unit (MTU) in simple words is the maximum IP packet size in bytes, that can be transmitted over the underlying network. While most of time this never has to be changed from the default values there are instances when you need to alter the MTU sizes to fix certain network performance issues. A best and classic example would be with a Windows Exchange Server being accessed over an Internet VPN setup. This in most of the cases demonstrate the problem with MTUs and related issues.

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