Shutting Down An Ethernet Interface; Configuring Flow Control On An Ethernet Interface - HP 3600 v2 series Configuration Manual

To do...
Restore the default
settings for the interface
NOTE:
Make sure that the fiber port speed matches the speed requirement of the inserted transceiver module. For
example, after you insert a 1000-Mbps transceiver module into a fiber port, configure the port speed with
the speed 1000 or speed auto command.

Shutting down an Ethernet interface

You might need to shut down and then bring up an Ethernet interface to activate some configuration
changes, for example, the speed or duplex mode changes.
Follow these steps to shut down an Ethernet interface or a group of Ethernet interfaces:
To do...
Enter system view
Enter Ethernet interface
view or port group view
Shut down the Ethernet
interface or interfaces
CAUTION:
Use this command with caution. After you manually shut down an Ethernet interface, the Ethernet interface
cannot forward packets even if it is physically connected.

Configuring flow control on an Ethernet interface

To avoid packet drops on a link, you can enable flow control at both ends of the link. When traffic
congestion occurs at the receiving end, the receiving end sends a flow control (Pause) frame to ask the
sending end to suspend sending packets
With the flow-control command configured, an interface can both send and receive flow control
•
frames: When congested, the interface sends a flow control frame to its peer. Upon receiving a flow
control frame from the peer, the interface suspends sending packets.
• With the flow-control receive enable command configured, an interface can receive, but not send
flow control frames. When the interface receives a flow control frame from its peer, it suspends
sending packets to the peer. When congested, the interface cannot send flow control frames to the
peer.
To handle unidirectional traffic congestion on a link, configure the flow-control receive enable command
at one end, and the flow-control command at the other. To enable both ends of the link to handle traffic
congestion, configure the flow-control command at both ends.
Follow these steps to enable flow control on an Ethernet interface:
Use the command...
default
Use the command...
system-view
•
Enter Ethernet interface view:
interface interface-type interface-number
•
Enter port group view:
port-group manual port-group-name
shutdown
3
Remarks
Optional
Remarks
—
Use any command.
To shut down an Ethernet interface,
enter Ethernet interface.
To shut down all Ethernet interfaces in
a port group, enter port group view.
Required
By default, Ethernet interfaces are up.