HP FlexFabric 12900 Series Configuration Manual page 18

Figure 2 Forcibly bring up a fiber port
Correct fiber
connection
Device A
XGE1/0/1
XGE1/0/1
Device B
Fiber port
Configuration restrictions and guidelines
When you forcibly bring up a fiber port, follow these guidelines:
• The port up-mode command is mutually exclusive with both the shutdown and loopback
commands.
A GE fiber port cannot correctly forward traffic if you configure the port up-mode command on the
•
port and install an electro-optical module, 100/1000-Mbps transceiver module, or 100-Mbps
transceiver module into the port. To solve the problem, use the undo port up-mode command on the
fiber port.
Configuration procedure
To forcibly bring up a fiber port:
Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Forcibly bring up the fiber
port.
When Ethernet
interfaces cannot
forcibly brought up
XGE1/0/1
XGE1/0/1
Tx end Rx end
Command
system-view
interface interface-type
interface-number
port up-mode
be or are not
Device A
Device B
Fiber link
Packets
10
When Ethernet interfaces
are forcibly brought up
Device A
XGE1/0/1
XGE1/0/1
Device B
The fiber is
disconnected.
The interface is
down.
Remarks
N/A
N/A
By default, a fiber Ethernet port is not
forcibly brought up, and the physical state
of a fiber port depends on the physical
state of the fibers.