R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Command Reference

Usage guidelines

Set an appropriate MTU to avoid fragmentation. The MTU for the interface applies to only packets that

are sent to the CPU for forwarding by software, for example, the packets that are sourced from or

destined to the interface.

As the MTU size decreases, the number of fragments grows. When you set the MTU for an interface, you

should consider QoS queue lengths (for example, the default FIFO queue length is 75) to prevent a too

small MTU from causing packet drops in QoS queuing. To achieve the best result, you can tune the MTU

with the mtu command or tune QoS queue lengths.

Examples

# Set the MTU to 1430 bytes for Layer 3 Ethernet interface Ten-GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 1/0/1

[Sysname-Ten-GigabitEthernet1/0/1] mtu 1430