H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 116)

14-3
Currently, only Dual-Combo ports are supported on WX6103 access controller switch boards.
Configuring Combo port state
Follow these steps to configure the state for a double Combo port:
To do... Use the command... Remarks
Enter system view system-view —
Enter Ethernet interface
view interface interface-type
interface-number
—
Enable a specified double
Combo port
undo shutdown
Optional
By default, out of the two ports in a Combo port,
the one with a smaller port ID is enabled.
For detailed information about Combo ports and the corresponding physical ports, refer to the
installation guide.
Enabling Flow Control on an Ethernet Port
When flow control is enabled on both sides, if traffic congestion occurs on one side, the side will send a
Pause frame notifying the peer side to temporarily suspend the sending of packets. The peer side is
expected to stop sending packets when it receives the Pause frame. In this way, flow controls helps to
avoid the dropping of packets. Note that flow control can take effect only when it is enabled on both
sides.
Follow these steps to enable flow control on an Ethernet port:
To do... Use the command... Remarks
Enter system view system-view —
Enter Ethernet port view
interface interface-type
interface-number
—
Enable flow control flow-control
Required
Turned off by default
Enabling Loopback Test on an Ethernet Port
You can enable loopback testing to check whether the Ethernet port functions properly. Note that no
data packets can be forwarded during the testing. Loopback testing falls into the following two
categories:
z
Internal loopback test, which is performed within switching chips to test the functions related to the
Ethernet ports.
z
External loopback test, which is used to test the hardware functions of an Ethernet port. To perform
external loopback testing on an Ethernet port, you need to install a loopback plug on the Ethernet
port. In this case, packets sent from the port are received by the same port.