what is maximum transmission unit?

Maximum Transmission Unit (MTU) is the maximum data/packet can pass trough using particular protocol.


Internet IPv4 Path MTU (RFC 791) At least 68 bytes
Internet IPv6 Path MTU (RFC 2460) At least 1280 bytes
Ethernet v2 (RFC 1191) 1500 bytes
Ethernet (802.3) (RFC 1191) 1492 bytes
Ethernet Jumbo Frames 1500-9000 bytes
802.11[1] 2272 bytes
802.5 4464 bytes
FDDI (RFC 1191) 4500 bytes