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What is a MTU?

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MTU stands for Maximum Transmission unit - it is the largest packet that can be send over a network, if the packets are than an MTU then it must be fragmented into smaller bits to be sent through.

below are some defaults MTU settings of a Network.

NetworkDefault MTU
PPP296
X.25576
IEEE 802.31,492
Ethernet1,500
FDDI4,352
4Mb Token Ring4,464
16Mb Token Ring17,914
Hyperchannel65,535