Setting The Mdi Mode Of An Ethernet Interface - HP A3100-8 v2 SI Configuration Manual

To do...
or port group
view
Enable loopback detection on the
interfaces
Enable loopback detection control
Enable loopback detection in all
VLANs on the trunk or hybrid
interface
Set the protective action to take on
the interface when a loop is
detected
NOTE:
To use single-port loopback detection on an Ethernet interface, enable the function both globally and on
•
the interface.
To disable loopback detection on all interfaces, run the undo loopback-detection enable command in
•
system view.
To enable a hybrid or trunk interface to take the administratively specified protective action, you must use
•
the loopback-detection control enable command on the interface.

Setting the MDI mode of an Ethernet interface

NOTE:
Fiber interfaces do not support the MDI mode setting.
Use the command...
Enter port port-group manual
group view port-group-name
loopback-detection enable
loopback-detection control enable
loopback-detection per-vlan
enable
loopback-detection action
{ no-learning | shutdown }
11
Remarks
To configure loopback detection
on one interface, enter Ethernet
interface view.
To configure loopback detection
on a group of Ethernet interfaces,
enter port group view.
Required
Disabled by default.
Optional
Disabled by default.
IMPORTANT:
This command is available only on
hybrid and trunk interfaces.
Optional
By default, a trunk or hybrid
interface performs loopback
detection only in its port VLAN
(PVID).
Optional
By default, a looped interface does
not receive or send packets.
With the shutdown keyword
specified, the looped port will be
automatically shut down and its
physical state changes to Loop
down. After the loop is removed,
use the undo shutdown command
on the port to recover its
forwarding capability.