Enabling jumbo frames

About this task

Enable jumbo frames to increase the size of Ethernet frames the chassis supports.

Procedure

  1. Enter Global Configuration mode:

    enable

    configure terminal

  2. Enable jumbo frames:

    sys mtu <1522-9600>

Example

Switch:1> enable

Switch:1# configure terminal

Enable jumbo frames to 9600 bytes:

Switch:1#(config)# sys mtu 9600

Variable Definitions

The following table defines parameters for the sys mtu command.

Variable

Value

<1522-9600>

Configures the frame size support for the data path.

Possible sizes are 1522, 1950, or 9600 bytes.

The default varies depending on the platform:
  • 5420 Series - 9600 bytes

  • 5520 Series - 1950 bytes

  • VSP 4450 Series - 1950 bytes

  • VSP 4900 Series - 1950 bytes

  • VSP 7200 Series - 1950 bytes

  • VSP 7400 Series - 1950 bytes

  • VSP 8200 Series - 1950 bytes

  • VSP 8400 Series - 1950 bytes

  • VSP 8600 Series - 1950 bytes

  • XA1400 Series - 1950 bytes