Configuring The Suppression Time Of Physical-Link-State Change On An Ethernet Interface; Configuring Loopback Testing On An Ethernet Interface - HP 4800G Series Configuration Manual

Follow these steps to enable flow control on an Ethernet interface:
To do...
Enter system view
Enter Ethernet interface view
Enable flow control
Configuring the Suppression Time of Physical-Link-State Change on an Ethernet
Interface
An Ethernet interface operates in one of the two physical link states: up or down. During the
suppression time, physical-link-state changes will not be propagated to the system. Only after the
suppression time has elapsed will the system be notified of the physical-link-state changes by the
physical layer. This functionality reduces the extra overhead occurred due to frequent
physical-link-state changes within a short period of time.
Follow these steps to configure the suppression time of physical-link-state changes on an Ethernet
interface:
To do...
Enter system view
Enter Ethernet interface view
Configure the up/down
suppression time of
physical-link-state changes

Configuring Loopback Testing on an Ethernet Interface

You can enable loopback testing to check whether the Ethernet interface functions properly. Note that
no data packets can be forwarded during the testing. Loopback testing falls into the following two
categories:
Internal loopback testing, which is performed within switching chips to test the functions related to
the Ethernet interfaces.
External loopback testing, which is used to test the hardware functions of an Ethernet interface. To
perform external loopback testing on an Ethernet interface, you need to install a loopback plug on
the Ethernet interface. In this case, packets sent from the interface are received by the same
interface.
Follow these steps to enable Ethernet interface loopback testing:
To do...
Enter system view
Enter Ethernet interface view
Use the command...
system-view
interface interface-type
interface-number
flow-control
Use the command...
system-view
interface interface-type
interface-number
link-delay delay-time
Use the command...
system-view
interface interface-type
interface-number
1-4
Remarks
—
—
Required
Disabled by default
Remarks
—
—
Required
By default, the physical-link-state
change suppression time is not
configured.
Remarks
—
—