Configuring Physical State Change Suppression On An Ethernet Interface; Configuring Loopback Testing On An Ethernet Interface - HP HSR6800 Configuration Manual

Step
2. Enter Ethernet interface
or subinterface view, or
port group view.
3. Shut down the Ethernet
interface or subinterface.
Configuring physical state change suppression on an Ethernet
interface
The physical link state of an Ethernet interface is either up or down. Each time the physical link of a port
goes up or comes down, the system immediately reports the change to the upper-layer protocol modules
(such as routing and forwarding modules) for packet transmission, and automatically generates traps
and logs, informing the user to take corresponding actions.
To prevent frequent physical link flapping from affecting system performance, configure physical state
change suppression to suppress the reporting of physical link state changes. The system reports physical
layer changes only when the suppression interval expires.
To configure physical state change suppression on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface view.
3. Set a physical state change
suppression interval.

Configuring loopback testing on an Ethernet interface

If an Ethernet interface does not work correctly, you can enable loopback testing on it to identify the
problem. An Ethernet interface in a loopback test does not forward data traffic.
Loopback testing has the following types:
• Internal loopback testing—Tests all on-chip functions related to Ethernet interfaces.
External loopback testing—Tests hardware of Ethernet interfaces. To perform external loopback
•
testing on an Ethernet interface, connect a loopback plug to the Ethernet interface. The device sends
test packets out of the interface, which are expected to loop over the plug and back to the interface.
If the interface fails to receive any test packets, the hardware of the interface is faulty.
Command
•
Enter Ethernet interface view:
interface interface-type
interface-number
•
Enter port group view:
port-group manual
port-group-name
•
Enter Ethernet subinterface view:
interface interface-type
interface-number.subnumber
shutdown
Command
system-view
interface interface-type
interface-number
link-delay delay-time
5
Remarks
Use one of the commands.
To shut down an Ethernet interface or
subinterface, enter Ethernet interface
or subinterface view. To shut down all
Ethernet interfaces in a port group,
enter port group view.
By default, Ethernet interfaces and
subinterfaces are up.
Remarks
N/A
N/A
By default, physical state change
suppression is disabled.