Comet Labs ND26000 Series, User Manual

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Jumbo Frame settings (MTU)
“Jumbo Frames” refer to Ethernet frames that are larger than 1500 bytes. It is
designed to enhance Ethernet networking throughput and reduce the CPU
utilization of large file transfers by enabling more efficient larger payloads per
packet.
Maximum Transmission unit (MTRU) refers to the size (in bytes) of the largest
packet that a given layer of a communications protocol can transmit.
ND26000 uses Standard Ethernet frames :
1500 bytes by default. If you
network appliances support Jumbo frame setting, select the appropriate MTU
value for your network environment. ND26000 supports 4074 and 9000 bytes for
MTU.
Note: Jumbo frame setting is valid in Gigabit network environment
only. Besides, all network appliances connect must enable Jumbo
frames and use the same MTU value.