Configuring WWN Pools

This chapter includes the following sections:

WWN Pools

A WWN pool is a collection of WWNs for use by the Fibre Channel vHBAs in a Cisco UCS domain. You create separate pools for the following:

  • WW node names assigned to the server
  • WW port names assigned to the vHBA
Important:

A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

If you use WWN pools in service profiles, you do not have to manually configure the WWNs that will be used by the server associated with the service profile. In a system that implements multi-tenancy, you can use a WWN pool to control the WWNs used by each organization.

You assign WWNs to pools in blocks. For each block or individual WWN, you can assign a boot target.

WWNN Pools

A WWNN pool is a WWN pool that contains only WW node names. If you include a pool of WWNNs in a service profile, the associated server is assigned a WWNN from that pool.

WWPN Pools

A WWPN pool is a WWN pool that contains only WW port names. If you include a pool of WWPNs in a service profile, the port on each vHBA of the associated server is assigned a WWPN from that pool.

Configuring WWNN Pools

Creating a WWNN Pool

Important:

A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

Procedure
    Step 1   In the Navigation pane, click the SAN tab.
    Step 2   In the SAN tab, expand SAN > Pools.
    Step 3   Expand the node for the organization where you want to create the pool.

    If the system does not include multitenancy, expand the root node.

    Step 4   Right-click WWNN Pools and select Create WWNN Pool.
    Step 5   In the Define Name and Description page of the Create WWNN Pool wizard:
    1. Enter a unique name and description for the WWNN Pool.

      This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved.

    2. Click Next.
    Step 6   In the Add WWN Blocks page of the Create WWNN Pool wizard, click Add.
    Step 7   In the Create WWN Block page, complete the following fields:
    1. In the From field, enter the first WWNN in the pool.
    2. In the Size field, enter the number of WWNNs to include in the pool.
    3. Click OK.
    Step 8   Do one of the following:
    • Repeat Steps 6 through 7 to add another block to the pool.
    • Click Next to move to the next page.
    Step 9   Click Finish.

    Adding a WWN Block to a WWNN Pool

    Important:

    A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

    Procedure
      Step 1   In the Navigation pane, click the SAN tab.
      Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
      Step 3   Expand the WWNN Pools node.
      Step 4   Right-click the WWNN pool to which you want to add a WWN block and select Create WWN Block.
      Step 5   In the Create WWN Block page, complete the following fields:
      1. In the From field, enter the first WWNN in the pool.
      2. In the Size field, enter the number of WWNNs to include in the pool.
      3. Click OK.

      Deleting a WWN Block from a WWNN Pool

      If you delete an address block from a pool, Cisco UCS Manager does not reallocate any addresses in that block that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted block remain with the vNIC or vHBA to which they are assigned until one of the following occurs:

      • The associated service profiles are deleted.
      • The vNIC or vHBA to which the address is assigned is deleted.
      • The vNIC or vHBA is assigned to a different pool.
      Procedure
        Step 1   In the Navigation pane, click the SAN tab.
        Step 2   In the SAN tab, expand SAN > Pools > Organization_Name > WWNN Pools > WWNN_Pool_Name .
        Step 3   Right-click the WWN block that you want to delete and select Delete.
        Step 4   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.

        Adding a WWNN Initiator to a WWNN Pool

        Important:

        A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

        Procedure
          Step 1   In the Navigation pane, click the SAN tab.
          Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
          Step 3   Expand the WWNN Pools node.
          Step 4   Right-click the WWNN pool to which you want to add a WWNN initiator and select Create WWNN Initiiator.
          Step 5   In the Create WWNN Initiator dialog box, complete the following fields:
          Name Description

          World Wide Name field

          The WWN.

          Name field

          The name of the WWNN initiator.

          This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved.

          Description field

          A user-defined description of the WWNN initiator.

          Enter up to 256 characters. You can use any characters or spaces except ^ (carat), \ (backslash), > (greater than), < (less than), ' (single quote), " (double quote), ` (accent mark), or = (equal sign).

          Step 6   Click OK.

          Deleting a WWNN Initiator from a WWNN Pool

          Procedure
            Step 1   In the Navigation pane, click the SAN tab.
            Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
            Step 3   Expand the WWPN Pools node.
            Step 4   Choose the WWNN pool from which you want to delete a WWNN initiator.
            Step 5   In the Work pane, click the Initiators tab.
            Step 6   Right-click the initiator that you want to delete and choose Delete.
            Step 7   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.

            Deleting a WWNN Pool

            If you delete a pool, Cisco UCS Manager does not reallocate any addresses from that pool that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted pool remain with the vNIC or vHBA to which they are assigned until one of the following occurs:

            • The associated service profiles are deleted.
            • The vNIC or vHBA to which the address is assigned is deleted.
            • The vNIC or vHBA is assigned to a different pool.
            Procedure
              Step 1   In the Navigation pane, click the SAN tab.
              Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
              Step 3   Expand the WWNN Pools node.
              Step 4   Right-click the WWNN pool you want to delete and select Delete.
              Step 5   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.

              Configuring WWPN Pools

              Creating a WWPN Pool

              Important:

              A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

              Procedure
                Step 1   In the Navigation pane, click the SAN tab.
                Step 2   In the SAN tab, expand SAN > Pools.
                Step 3   Expand the node for the organization where you want to create the pool.

                If the system does not include multitenancy, expand the root node.

                Step 4   Right-click WWPN Pools and select Create WWPN Pool.
                Step 5   In the Define Name and Description page of the Create WWN Pool wizard:
                1. Enter a unique name and description for the WWPN Pool.

                  This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved.

                2. Click Next.
                Step 6   In the Add WWN Blocks page of the Create WWPN Pool wizard, click Add.
                Step 7   In the Create WWN Block page, complete the following fields:
                1. In the From field, enter the first WWPN in the pool.
                2. In the Size field, enter the number of WWPNs to include in the pool.
                3. Click OK.
                Step 8   Click Finish.
                What to Do Next

                Include the WWPN pool in a vHBA template.

                Adding a WWN Block to a WWPN Pool

                Important:

                A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

                Procedure
                  Step 1   In the Navigation pane, click the SAN tab.
                  Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
                  Step 3   Expand the WWPN Pools node.
                  Step 4   Right-click the WWPN pool to which you want to add a WWN block and select Create WWN Block.
                  Step 5   In the Create WWN Block page, complete the following fields:
                  1. In the From field, enter the first WWPN in the pool.
                  2. In the Size field, enter the number of WWPNs to include in the pool.
                  3. Click OK.

                  Deleting a WWN Block from a WWPN Pool

                  If you delete an address block from a pool, Cisco UCS Manager does not reallocate any addresses in that block that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted block remain with the vNIC or vHBA to which they are assigned until one of the following occurs:

                  • The associated service profiles are deleted.
                  • The vNIC or vHBA to which the address is assigned is deleted.
                  • The vNIC or vHBA is assigned to a different pool.
                  Procedure
                    Step 1   In the Navigation pane, click the SAN tab.
                    Step 2   In the SAN tab, expand SAN > Pools > Organization_Name > WWPN Pools > WWPN_Pool_Name .
                    Step 3   Right-click the WWN block that you want to delete and select Delete.
                    Step 4   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.

                    Adding a WWPN Initiator to a WWPN Pool

                    Important:

                    A WWN pool can include only WWNNs or WWPNs in the ranges from 20:00:00:00:00:00:00:00 to 20:FF:FF:FF:FF:FF:FF:FF or from 50:00:00:00:00:00:00:00 to 5F:FF:FF:FF:FF:FF:FF:FF. All other WWN ranges are reserved. To ensure the uniqueness of the Cisco UCS WWNNs and WWPNs in the SAN fabric, we recommend that you use the following WWN prefix for all blocks in a pool: 20:00:00:25:B5:XX:XX:XX

                    Procedure
                      Step 1   In the Navigation pane, click the SAN tab.
                      Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
                      Step 3   Expand the WWPN Pools node.
                      Step 4   Right-click the WWPN pool to which you want to add a WWPN initiator and select Create WWPN Initiator.
                      Step 5   In the Create WWPN Initiator dialog box, complete the following fields:
                      Name Description

                      World Wide Name field

                      The WWN.

                      Name field

                      The name of the WWPN initiator.

                      This name can be between 1 and 16 alphanumeric characters. You cannot use spaces or any special characters other than - (hyphen), _ (underscore), : (colon), and . (period), and you cannot change this name after the object has been saved.

                      Description field

                      A user-defined description of the WWPN initiator.

                      Enter up to 256 characters. You can use any characters or spaces except ^ (carat), \ (backslash), > (greater than), < (less than), ' (single quote), " (double quote), ` (accent mark), or = (equal sign).

                      Step 6   If you want to add a SAN boot target, expand the Boot Target area and complete the following fields:
                      Name Description

                      Boot Target WWPN field

                      The WWPN that corresponds to the location of the boot image.

                      Boot Target LUN field

                      The LUN that corresponds to the location of the boot image.

                      Step 7   Click OK.

                      Deleting a WWPN Initiator from a WWPN Pool

                      Procedure
                        Step 1   In the Navigation pane, click the SAN tab.
                        Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
                        Step 3   Expand the WWPN Pools node.
                        Step 4   Choose the WWPN pool from which you want to delete a WWPN initiator.
                        Step 5   In the Work pane, click the Initiators tab.
                        Step 6   Right-click the initiator that you want to delete and choose Delete.
                        Step 7   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.

                        Deleting a WWPN Pool

                        If you delete a pool, Cisco UCS Manager does not reallocate any addresses from that pool that have been assigned to vNICs or vHBAs. All assigned addresses from a deleted pool remain with the vNIC or vHBA to which they are assigned until one of the following occurs:

                        • The associated service profiles are deleted.
                        • The vNIC or vHBA to which the address is assigned is deleted.
                        • The vNIC or vHBA is assigned to a different pool.
                        Procedure
                          Step 1   In the Navigation pane, click the SAN tab.
                          Step 2   In the SAN tab, expand SAN > Pools > Organization_Name .
                          Step 3   Expand the WWPN Pools node.
                          Step 4   Right-click the WWPN pool you want to delete and select Delete.
                          Step 5   If the Cisco UCS Manager GUI displays a confirmation dialog box, click Yes.