H3C Technologies H3C S12500-X Series Switches - Manual (Page 20)

9
Setting the statistics polling interval
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet interface
view.
interface interface-type
interface-number
N/A
3. Set the statistics polling
interval.
flow-interval interval
By default, the interface statistics
polling interval is 300 seconds.
To display the interface statistics collected in the last polling interval, use the display interface command.
To clear interface statistics, use the reset counters interface command.
Forcibly bringing up a fiber port
As shown in Figure 2 , a fiber port uses separate fibers for transmitting and receiving packets. The
physical state of the fiber port is up only when both transmit and receive fibers are physically connected.
If one of the fibers is disconnected, the fiber port does not work.
To enable a fiber port to forward traffic over a single link, you can use the port up-mode command. This
command brings up a fiber port by force, even when no fiber links or optical modules are present. If one
fiber link is present and up, the fiber port can forward packets over the link unidirectionally.
Figure 2 Forcibly bring up a fiber port
Correct fiber
connection
When Ethernet
interfaces cannot
be or are not
forcibly brought up
When Ethernet interfaces
are forcibly brought up
The fiber is
disconnected.
Fiber link
XGE1/0/1
XGE1/0/1
Device A
Device B
XGE1/0/1
XGE1/0/1
Device A
Device B
XGE1/0/1
XGE1/0/1
Device A
Device B
The interface is
down.
Packets
Fiber port Tx end Rx end