R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

2
Configuring a combo interface
A combo interface is a logical interface that physically comprises one fiber port and one copper port.
The two ports share one forwarding channel and one interface view, so they cannot work simultaneously.
When you activate one port, the other port is automatically disabled. In the interface view, you can
activate the fiber or copper combo port, and configure other port attributes such as the interface rate and
duplex mode.
Configuration prerequisites
Before you configure combo interfaces, complete the following tasks:
• For the interface cards that support combo interfaces, see the HP 11900 installation guide.
• Use the display interface command to determine which port (fiber or copper) of the combo
interface is active. If the current port is the copper port, the output includes "Media type is twisted
pair ". If the current port is the fiber port, the output does not include this information. You can also
use the display this command in the view of the combo interface to view the combo interface
configuration. If the combo enable fiber command exists, the fiber port is active. If the command
does not exist, the copper port is active.
Changing the active port of a combo interface
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter Ethernet interface view.
interface interface-type
interface-number
N/A
3. Activate the copper combo
port or fiber combo port.
combo enable { copper | fiber }
By default, the fiber combo port is
active.
Splitting a 40-GE interface and combining 10-GE interfaces
Splitting a 40-GE interface into four 10-GE interfaces
You can use a 40-GE QSFP+ interface as a single interface. You can also split a 40-GE QSFP+ interface
into four 10-GE interfaces to improve the port density, reduce the cost, and improve the network flexibility.
For example, you can split a 40-GE QSFP+ interface FortyGigE 1/0/1 into four 10-GE interfaces:
Ten-GigabitEthernet 1/0/1:1 through Ten-GigabitEthernet 1/0/1:4. The 10-GE interfaces split from a
40-GE QSFP+ interface support the same configuration and attributes as common 10-GE interfaces,
except that they are numbered in a different way. A 40-GE QSFP+ interface split into four 10-GE
interfaces must use a dedicated 1-to-4 cable. For information about the cables, see the installation guide.
To split a 40-GE interface into four 10-GE interfaces:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter 40-GE interface view.
interface interface-type
interface-number
N/A
3. Split the 40-GE interface into
four 10-GE interfaces.
using tengige
By default, a 40-GE interface is used
as a single interface.