A WWNN is a 64-bit address assigned to Fibre Channel (FC) devices. In UCS, WWNN is assigned to the mezzanine card installed in a blade server because a mezzanine card can have more than one port (vHBA). Each port (vHBA) created from the mezzanine card acquires a unique WWPN. WWPNs are described in the next section.
These are the steps to create WWNN address pools:
- Log in to the UCSM screen.
- Click on the SAN tab in the navigation pane.
- Click on the Pools tab and expand root.
- Right-click on WWNN Pools, and click on Create WWNN Pool, as shown in the following screenshot:
- In the pop-up window, assign the Name and Description values to the WWNN pool.
- The selection of Default as the Assignment Order value is random. Select Sequential to assign the WWNNs sequentially.
- Click on Next:
- Click on Add on the next screen.
- In the pop-up window, change Size to create the desired number of WWNN addresses.
- Click on OK and then on Finish, as shown here:
- In order to verify the WWNN pool, click on the WWNN Pools tab in the navigation pane and then on the Initiators tab in the work pane, as shown here: