Nokia Switch SR Linux System Basic Operation

We previously introduced the common interface configuration of Nokia SR OS System Common Interface Configuration. Recently, Moduletek Laboratory purchased a Nokia 7220 IXR-D4 router and found it runs on the SR Linux system, which is different from the SR OS system installed on the Nokia 7250 IXR. Next, we will walk you through the basic operations of SR Linux.

The Nokia 7220 IXR-D series are high-performance, fixed-configuration platforms designed for data center leaf-spine deployments, powered by the new SR Linux network operating system. The Nokia 7220 IXR-D4 is equipped with 28 × 100G QSFP28 interfaces and 8 × 400G QSFPDD interfaces.

Figure 1 Device Appearance

Connect a PC to the device’s console port using an RJ45-to-DB9 serial cable. The device’s default parameters are as follows:

• Default baud rate: 115200

• Default username: linuxadmin

• Default password: NokiaSrl1!

After logging into the console, you will enter the SR Linux directory. Run the command to access the CLI (Command Line Interface):

sr_cli

Before entering the CLI for the first time, you need to disable the ZTP (Zero Touch Provisioning) autoboot function. Execute the command:

ztp service stop --autoboot disable

The device will automatically reboot after this command is executed.

After the device reboots and you re-enter the CLI, run the command to view all interfaces:

show interface all

You will find that all interfaces are administratively down by default and need to be manually enabled before use.

Run the following command to enter configuration mode:

enter candidate

Then execute the command to enable or disable the target interface:

set interface <port_number> admin-state enable/disable

Insert Moduletek’s QSFP-100G-CWDM4 optical module into the Nokia 7220 IXR-D4 router, connect the fiber patch cords, and execute the command to check the interface speed and status:

show interface <port_number> detail

The module can normally negotiate to the 100G rate, the module model is correctly identified, and DOM data is read without any abnormalities.

Note:

a. <port_number> refers to the physical interface number. You can run the following command to query all interface numbers:

show port all

b. All configurations must be committed and saved to take effect permanently:

commit save

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