Commands for Configuring Slots and Ports on a Switch
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
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configure jumbo-frame-size
configure jumbo-frame-size <framesize>
Description
Sets the maximum jumbo frame size for the switch.
Syntax Description
Default
Jumbo frames are disabled by default. The default size setting is 9216.
Usage Guidelines
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
framesize
keyword describes the maximum jumbo frame size “on the wire,” and includes 4 bytes
of cyclic redundancy check (CRC) plus another 4 bytes if 802.1Q tagging is being used.
To enable jumbo frame support, you must configure the maximum transmission unit (MTU) size of a
jumbo frame that will be allowed by the switch.
NOTE
Extreme Networks recommends that you set the MTU size so that fragmentation does not occur.
Some network interface cards (NICs) have a configured maximum MTU size that does not include the
additional 4 bytes of CRC. Ensure that the NIC maximum MTU size is at or below the maximum MTU
size configured on the switch. Frames that are larger than the MTU size configured on the switch are
dropped at the ingress port.
Example
The following command configures the jumbo frame size to 5500:
configure jumbo-frame-size 5500
History
This command was first available in ExtremeWare XOS 10.1.
framesize
Specifies a maximum transmission unit (MTU) size for a jumbo frame. The
range is 1523 to 9216; the default is 9216.
