Network Operating System Personalities

Extreme Networks offers universal hardware products that support more than one Network Operating System (NOS) personality. These hardware products ship with a default NOS personality but you can select a non-default personality. After you log in using the default NOS username and password for the first time, you can respond to an initialization question to change the NOS personality.

The following table identifies universal hardware products capable of running Fabric Engine and indicates the default NOS personality.

Network Operating System Selection

The primary method to select a NOS personality is by using ExtremeCloud IQ or ExtremeCloud IQ ‑ Site Engine. To select a NOS personality using ExtremeCloud IQ, see Read Me First – Universal Hardware. If the network is not accessible, or if you do not use Extreme Networks management software, you can also change the NOS personality manually by using CLI commands in the running NOS.

The procedure in this document includes the commands you use if the personality is Fabric Engine and you need to change the NOS personality manually. To change the personality to Fabric Engine, see the documentation for the running NOS.

Fabric Engine Default Behavior

The following list provides details about the default behavior after you deploy a universal hardware product with the Fabric Engine personality:

• Port behavior:

  • All ports are isolated members of private VLAN 4040 and 4049.

  • The Segmented Management Instance Management VLAN and Management OOB interfaces are enabled.

  • All ports are administratively enabled.

  • To provide loop protection, no switching occurs between ports.

• DHCP:

  • DHCP client requests are cycled between In-Band, all ports untagged, and Out-of-Band ports.

• DNS:

  • The DHCP client issues a DNS query on the interface selected by Zero Touch Deployment to look for ExtremeCloud IQ. For information about Zero Touch Deployment, see Zero Touch Deployment.

  • You can then use ExtremeCloud IQ to upgrade or change the switch configuration. If you do not use ExtremeCloud IQ, you can use ExtremeCloud IQ ‑ Site Engine or on-switch user interfaces.