Jumbo frames are Ethernet frames that are larger than 1522 bytes, including four bytes used for the cyclic redundancy check (CRC).
Extreme products support switching and routing of jumbo frames at wire-speed on all ports. The configuration for jumbo frames is saved across reboots of the switch.
Jumbo frames are used between endstations that support larger frame sizes for more efficient transfers of bulk data. Both endstations involved in the transfer must be capable of supporting jumbo frames. The switch only performs IP fragmentation, or participates in maximum transmission unit (MTU) negotiation on behalf of devices that support jumbo frames.
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