Splitting a 40-GE interface and combining 10-GE breakout interfaces
Configuration restrictions and guidelines
When you split a 40-GE interface and combine 10-GE breakout interfaces, follow these restrictions and guidelines:
This feature is not supported on non-default MDCs and applicable to only the LST1XLP16RFD1 interface cards.
Before configuring this feature for a fiber port, you must insert a 40-GE QSFP+ transceiver module into the fiber port.
Each interface card supports up to ten 10-GE breakout interfaces.
You cannot split a 40-GE interface with PFC enabled into 10-GE breakout interfaces.
You cannot enable PFC on 10-GE breakout interfaces split from a 40-GE interface.
Splitting a 40-GE interface into four 10-GE breakout interfaces
You can use a 40-GE interface as a single interface. To improve port density, reduce costs, and improve network flexibility, you can also split a 40-GE interface into four 10-GE breakout interfaces. For example, you can split a 40-GE interface FortyGigE 1/0/16 into four 10-GE breakout interfaces: Ten-GigabitEthernet 1/0/16:1 through Ten-GigabitEthernet 1/0/16:4.
To split a 40-GE interface into four 10-GE breakout 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 breakout interfaces. | using tengige | By default, a 40-GE interface is used as a single interface. The 10-GE breakout interfaces split from a 40-GE interface support the same configuration and attributes as common 10-GE interfaces, except that they are numbered differently. |
4. Reboot the device. | N/A | After creating the four 10-GE breakout interfaces, the system removes the 40-GE interface. A 40-GE interface split into four 10-GE breakout interfaces must use a dedicated 1-to-4 cable. For more information about the cable, see the switch installation guide. |
Combining four 10-GE interfaces into a 40-GE interface
If you need higher bandwidth, you can combine the four 10-GE breakout interfaces into a 40-GE interface.
To combine four 10-GE breakout interfaces into a 40-GE interface:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter the view of any 10-GE breakout interface split from a 40-GE interface. | interface interface-type interface-number | N/A |
3. Combine the four 10-GE breakout interfaces into a 40-GE interface. | using fortygige | By default, a 40-GE interface is not split and operates as a single interface. |
4. Reboot the device. | N/A | After creating the 40-GE interface, the system removes the four 10-GE breakout interfaces. After you combine the four 10-GE breakout interfaces, replace the dedicated 1-to-4 cable with a dedicated 1-to-1 cable or a 40-GE transceiver module. For more information about the cable or the transceiver module, see the switch installation guide. |