JUNOSe 9.1.x Command Reference Guide A to M > M Commands > mtu

mtu

Description: 

Sets the maximum allowable size in bytes of the maximum transmission unit for interfaces on cOCx/STMx, CT3, COCX-F3, Ethernet, or POS modules. The no version restores the default value, which varies according to module type. This command is not available for the Ethernet interface on the SRP module.

Syntax: 

mtu mtuSize

no mtu

• mtuSize—Maximum allowable size of the MTU; default and range varies with interface type:

• Interfaces on cOCx/STMx, CT3, and COCX-F3 modules—Number in the range 4–9996; default value is 1600
• Interfaces on Ethernet modules—Number in the range 64–9188, except on the FE-2 and FE-8 I/O modules, where the range is 64–9042; you cannot configure MTU on Ethernet interfaces on the SRP module; default value is 1518
• Interfaces on POS modules—Number in the range 1–9996; default value is 4470

Mode(s): 

Interface Configuration

    Release Information    Command introduced before JUNOSe Release 7.1.0.