Changing the Network Operating System

The ExtremeSwitching 5420 series switches can run two different operating systems: ExtremeXOS (default) or VOSS.

Making Your Initial Network Operating System Selection

You can make your initial selection of the operating system using:

ExtremeCloud IQ (see ExtremeCloud™ IQ Agent Support)—You can select your network operating system when purchasing your switch, which associates the switch serial number with your desired network operating system, which then causes the desired network operating system to be loaded during ExtremeCloud onboarding. For more information about using ExtremeCloud IQ, go to https://www.extremenetworks.com/support/documentation/extremecloud-iq/.
Extreme Management System— see Extreme Management Center User Guide
Manually during boot-up:
- Bootloader—When the message Starting Default Bootloader ...Press and hold the <spacebar> to enter the bootrom appears, press and hold the space bar until the boot menu appears (you have 30 seconds):
```
*** 5420- Boot Menu ( 2.2.1.3 ) ***

     EXOS: Default
     EXOS: Primary 31.3..
     EXOS: Secondary 31.3..
     EXOS: Primary 31.3.. with default configuration
     EXOS: Secondary 31.3.. with default configuration
     EXOS: Rescue
     Change the switch OS to VOSS
     Run Manufacturing Diagnostics
     Update bootloader
     Reboot system
```
  Use the up and down arrow keys to select Change the switch OS to VOSS, and then press Enter.
- Safe defaults mode start-up menu—When the question Would you like to change the switch OS to VOSS? [y/N/q] appears:
  - For ExtremeXOS, type N.
  - For VOSS, type y.
Continue to log onto the switch. For more information about logging onto the switch, see the ExtremeXOS 31.3 User Guide .

Changing Your Network Operating System

You can change your network operating system selection at any time.

Caution

Changing your network operating systems deletes all configuration files, debug information, logs, events, and statistics information of the previous network operating system.

Note

If you anticipate ever changing the operating system to VOSS, and you want to statically assign IP addresses on the DHCP server, then it is recommended to assign them based on the DHCP client ID. For more information about this issue, see the Using a BOOTP or DHCP Server topic in the ExtremeXOS 31.3 User Guide .

ExtremeCloud IQ—See https://www.extremenetworks.com/support/documentation/extremecloud-iq/
Extreme Management System—See Extreme Management Center User Guide
CLI Command—run the download [url url {vr vrname} | image [active | inactive] [[hostname | ipaddress] filename {{vr} vrname} {block-size block_size} | memorycard filename] {partition} command specifying a VOSS image.
Note
Do not use the active, inactive, and partition options. They are not applicable for VOSS.