R3303-HP HSR6800 Routers Interface Command Reference

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Syntax
mtu size
undo mtu
Default
The MTU size of the POS interface is 1500 bytes.
Views
POS interface view
Default command level
2: System level
Parameters
size: Specifies an MTU value. The value range is 128 to 9600 bytes. The maximum MTU configurable on
an interface might be lower than 9600 bytes depending on the device model, interface module model,
and interface type.
Usage guidelines
The MTU setting affects IP packets assembly and fragmentation on an interface. The lower the MTU, the
more segments a large packet has. The risk of packet losses increases in a congestion condition, because
the risk of QoS queue length being exceeded increases.
To avoid the situation, you can increase the QoS queue length. The default queuing mechanism is FIFO
on an interface. You can use the qos fifo queue-length command to increase the queue length for the
interface. For more information about queuing configuration, see ACL and QoS Configuration Guide.
Examples
# Set the MTU of POS interface 2/1/0 to 1492.
<Sysname> system-view
[Sysname] interface pos 2/1/0
[Sysname-Pos2/1/0] mtu 1492
Related commands
display interface pos
port-type switch
Use port-type switch to change the type of an interface.
Syntax
port-type switch interface-type
Views
POS interface view, Layer 3 GigabitEthernet interface view
Default command level
2: System level
Parameters
interface-type: Specifies the target interface type.