11.1 Virtual switch description11.1.1 VSWITCH controller11.1.2 Network interface card11.1.3 VSWITCH capabilities11.2 Our VSWITCH environment11.3 Configuring a Layer 2 VSWITCH11.3.1 Define the virtual switch environment11.3.2 Authorize the guest system access to the virtual switch11.3.3 Connect the guest systems to the VSWITCH11.3.4 Verify the virtual switch configuration11.3.5 Creating definitions for Layer 2 support: SUSE and Red Hat Linux11.3.6 Setting up Layer 2 for the guest systems11.3.7 Making permanent device and network definitions11.4 Configuring VLAN support11.4.1 Define VLAN capabilities to the virtual switch11.4.2 Authorize Linux guests access to the virtual switch with VLAN IDs11.4.3 Add VLANs to the guest systems11.4.4 Add VLAN support to the z/OS TCP/IP stacks11.4.5 Configure trunk mode in the Ethernet switch for the OSA connections11.4.6 Verify the VLAN11.5 Enabling port isolation11.5.1 Port isolation off, systems sharing VSWITCH and OSA11.5.2 Port isolation on, systems sharing VSWITCH and OSA11.6 VEPA mode11.6.1 Promiscuous mode11.6.2 Link aggregation