Performing A Loopback Test On An Ethernet Interface - HP MSR Router Series Configuration Manual

Figure 1 Change rule of the penalty value
Penalty
Not suppressed
Configuration restrictions and guidelines
The dampening command does not take effect on the administratively down events. When you execute
the shutdown command, the penalty restores to 0, and the interface reports the down event to the higher
layer protocols.
Configuration procedure
To configure dampening on an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet interface
view.
3. Enable dampening on
the interface.

Performing a loopback test on an Ethernet interface

If an Ethernet interface does not work correctly, you can perform a loopback test on it to identify the
problem. An Ethernet interface in a loopback test does not forward data traffic.
Only internal loopback tests are supported. In an internal loopback test, all on-chip functions related to
the Ethernet interface are tested.
t
0
Command
system-view
interface interface-type
interface-number
dampening [ half-life reuse
suppress max-suppress-time ]
t
1
Suppressed
8
t
2
Not suppressed
Remarks
N/A
N/A
By default, interface dampening is
disabled on Ethernet interfaces.
Ceiling
Suppress limit
Reuse limit
Time