H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 17)

8
Setting the statistics polling interval
Follow these steps to set the statistics polling interval globally or on an Ethernet interface:
To do… Use the command… Remarks
Enter system view system-view —
Enter Ethernet interface view
interface interface-type
interface-number
—
Set the statistics polling interval flow-interval interval
Optional
300 seconds by default.
Configuring jumbo frame support
An Ethernet interface may receive some frames larger than the standard Ethernet frame size (1518 bytes),
called "jumbo frames", during high-throughput data exchanges such as file transfers.
With jumbo frame support enabled, the interface can process frames larger than the standard Ethernet
frame size (1518 bytes) yet within 10240 bytes. With jumbo frame support disabled, the interface drops
the incoming frames larger than 1518 bytes.
Follow these steps to configure jumbo frame support in system view:
To do… Use the command… Remarks
Enter system view system-view —
Enable jumbo frame support jumboframe enable
Optional
Enabled by default.
Enabling loopback detection on an Ethernet interface
If a device receives a packet that it sent out, a loop has occurred to the device. Loops may cause
broadcast storms, which degrade network performance. You can use this feature to detect whether a
loop has occurred.
Depending on whether the receiving interface is the same as the sending interface, loops fall into the
following type: single-port loopback and multi-port loopback.
• Single-port loopback occurs when an interface receives a packet that it sent out and the receiving
interface is the same as the sending interface, as shown in
Figure 2 .
• Multi-port loopback occurs when a device receives a packet that it sent out but the receiving
interface may not be the sending interface, as shown in
Figure 3 .