Overview

The 800GE optical interface can be used as a single interface or split into multiple independent and logical interfaces. The speed of split interfaces can be further reduced through running command set interface gigabit-ethernet speed. The detailed information is shown below.

Table 1. Detailed Information of Split Type and Speed Reduction

Configuration Notes and Constraints

When configuring the port breakout and port merge, pay attention to the following notes:

• Currently, only the platform of N9600-64OD supports 800GE optical interfaces.

• After you split an interface into 8 x 100G, another port in the same group cannot be split or can only be split into 2 x 400G due to chip limitations. For example, xe-1/1/1 and xe-1/1/2 are in a group, if you split the interface xe-1/1/1 into 8 x 100G, the interface xe-1/1/2 cannot be split or can only be split into 2 x 400G.

• Certain 800G optical modules do not support certain split types and speed reduction for their own limitations. For detailed information, contact the FS support staff.

• If you enable the breakout function of interface without configuring the breakout-type, the 800GE interface will be split into four 200G Ethernet interfaces by default.

• The interface name is modified after port breakout or merge, and the original interface does not exist. To make sure that the configuration file can be loaded normally when system boots up, you need to manually delete the configurations associated with the original interfaces before restarting system.

• To cancel the interface split, use the command set interface gigabit-ethernet <port-name> breakout false to restore the split interfaces into one interface.

Configuring Port Breakout and Port Merge

To configure the port breakout for the 800GE interfaces, take the following steps:

Step 1 Enable the port breakout function.

Step 2 Split the interface as needed. You can specify the breakout type as 8 x 100G, 4 x 200G or 2 x 400G.

Step 3 Commit the configuration.

Step 4 Restart PICOS to make the setting take effect. NOTE: the split interfaces cannot be viewed before restarting PICOS.

Step 5 View the interface information after system startup. You can view the information of split interfaces.

Configuration Example of Port Breakout

Overview

For N9600-64OD, split the 800GE interface into two 400GE interfaces, and further reduce the speed of one split interface to 200GE. You can view the interface information after system startup.

Procedure

Step 1 Enable the port breakout function.

Step 2 Specify the breakout type as 2 x 400G.

Step 3 Commit the configuration.

Step 4 Restart PICOS to make the setting take effect.

Step 5 Reduce the speed of split interface xe-1/1/48.1 to 200GE.

Verifying the configuration

Use the command run show interface brief to view the interface xe-1/1/48 information after system startup.