Setting The Statistics Polling Interval; Forcibly Bringing Up A Fiber Port - HP FlexFabric 12900 Series Configuration Manual

Table 1 The relationship between the PFC function and the generic flow control function
flow-control
Unconfigurable
Configured

Setting the statistics polling interval

Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Set the statistics polling
interval.
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

CAUTION:
The following operations on a fiber port will cause link-down and link-up events before the port finally
stays up:
• Configure both the port up-mode command and the speed or duplex command.
Install or remove fibers or transceiver modules after you forcibly bring up the fiber port.
•
As shown in
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.
priority-flo
priority-flow-contr
w-control
ol no-drop dot1p
enable
Configured Configured
Configurable Unconfigurable
Command
system-view
interface interface-type
interface-number
flow-interval interval
Figure 2, a fiber port uses separate fibers for transmitting and receiving packets. The
Remarks
You cannot enable flow control by using the
flow-control command on a port where PFC is
enabled and PFC is enabled for the specified
802.1p priority values.
•
On a port configured with the flow-control
command, you can enable PFC, but you
cannot enable PFC for specific 802.1p
priorities.
•
Enabling both generic flow control and PFC on
a port disables the port from sending common
or PFC pause frames to inform the peer of
congestion conditions. However, the port can
still handle common and PFC pause frames
from the peer.
Remarks
N/A
N/A
By default, the interface statistics
polling interval is 300 seconds.
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