10
CONFIGURATION COMMANDS FOR
ETHERNET INTERFACES IN ROUTE
MODE
mtu
Syntax mtu size
undo mtu
View Ethernet interface view
Parameter size: The value of Maximum Transmission Unit (MTU for short), which varies by
interface type and defaults to 1,500 bytes.
■ Fast Ethernet: (FE for short): in the range of 46 bytes to 1,560 bytes
■ GigabitEthernet (GE for short) or 10 GE: in the range of 46 bytes to 16,384
bytes, with a default value of 1,500 bytes.
Description Use the mtu command to configure MTU value.
Use the
undo mtu command to restore MTU value.
n
Limited to the QoS queue length (for example, the default length of an FIFO queue
is 75), too small an MTU will result in too many fragments, which will be discarded
from the QoS queue. In this case, you can increase MTU or QoS queue length
properly. In Ethernet interface view, you can use qos fifo queue-length to
change the QoS queue length. For detailed configurations, see “qos fifo
queue-length” on page 1809.
Example # Configure MTU for Ethernet1/0 to be 1,000 bytes.
<Sysname> system-view
[Sysname] interface ethernet 1/0
[Sysname-Ethernet1/0] mtu 1000
timer hold
Syntax timer hold seconds
undo timer hold
View Ethernet interface view
