R3102-R3103-HP 6600/HSR6600 Routers Interface Command Reference

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Parameters
size: Maximum transmission unit (MTU) in bytes, in the range of 128 to 2000 bytes.
Usage guidelines
Due to the length of QoS queue, a packet may be discarded if the MTU is relatively small and the packet
is segmented into too many fragments. To avoid this situation, you can increase the QoS queue length by
using the qos fifo queue-length command in interface view. For more information, see ACL and QoS
Configuration Guide.
The MTU setting can affect IP packets assembly and fragmentation on the interface.
When you use the mtu command on a WAN interface, execute the shutdown command, and then the
undo shutdown command to make your configuration take effect.
Examples
# Set the MTU of interface Serial 1/0/0 to 1200 bytes.
<Sysname> system-view
[Sysname] interface serial 1/0/0
[Sysname-Serial1/0/0] mtu 1200
reset counters interface
Use reset counters interface to clear the statistics for cellular interfaces.
Syntax
reset counters interface [ serial [ interface-number ] ]
Views
Use view
Default command level
2: System level
Parameters
serial interface-number: Specifies a serial interface.
Usage guidelines
When you collect traffic statistics for a specific period of time on a serial interface, clear the existing
statistics on the interface.
• If you do not specify the serial keyword, this command clears statistics on all interfaces.
• If you specify the serial keyword without the interface-number argument, this command clears
statistics on all serial interfaces.
• If you specify both the serial keyword and the interface-number argument, this command clears
statistics on a specified serial interface.
Examples
# Clear statistics on interface Serial 1/0/0.
<Sysname> reset counters interface serial 1/0/0