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Lenovo Emulex VFA5.2 Product Manual
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vNIC bandwidth allocation and metering are performed only by VFA itself. In such a case, aunidirectional virtual channel is established where the bandwidth management is performed only forthe outgoing traffic on a VFA side (server-to-switch). The incoming traffic (switch-to-server) usesthe all available physical port bandwidth, because there is no metering performed on either the VFAor a switch side.In Switch Independent Mode mode, when storage protocols are enabled on the Emulex 10GbEVirtual Fabric Adapters, six vNICs (three per physical port) are Ethernet, and two vNICs (one perphysical port) are either iSCSI or FCoE.Unified Fabric Port (UFP)Unified Fabric Port provides a feature rich solution compared to the original vNIC Virtual Fabricmode. Supported with RackSwitch™ G8272, G8264CS, and G8264 top-of-rack switches. LikeVirtual Fabric mode vNIC, UFP allows carving up a single 10 Gb port into four virtual NICs (calledvPorts in UFP). UFP also has a number of modes associated with it, including:Only one vPort (vPort 2) per physical port can be bound to FCoE. If FCoE is not desired, vPort 2 canbe configured for one of the other modes.Tunnel mode: Provides Q-in-Q mode, where the vPort is customer VLAN-independent (verysimilar to vNIC Virtual Fabric Dedicated Uplink Mode).Trunk mode: Provides a traditional 802.1Q trunk mode (multi-VLAN trunk link) to the virtualNIC (vPort) interface. In other words, host-side tagging.Access mode: Provides a traditional access mode (single untagged VLAN) to the virtual NIC(vPort) interface which is similar to a physical port in access mode.FCoE mode: Provides FCoE functionality to the vPort.Auto-VLAN mode: Auto VLAN creation for Qbg and VMready environments.pNIC mode (physical NIC mode)In pNIC mode, the adapter operates as a standard dual-port 10 Gbps Ethernet adapter, and itfunctions with any 10 GbE switch. In pNIC mode, with the Emulex FCoE/iSCSI License, the cardoperates in a traditional Converged Network Adapter (CNA) mode with two Ethernet ports and twostorage ports (iSCSI or FCoE) available to the operating system.The following table compares the three virtual fabric modes.Table 6. Comparison of virtual fabric modesFunctionVirtual Fabric Mode(vNIC1)Switch Independent Mode(vNIC2) UFP ModeDescription Intelligence in the NetworkingOS working with selectEmulex adapters. VLANbased.Intelligence in the adapter,independent of the upstreamnetworking device.Intelligence in the adapter,independent of theupstream networkingdevice.SupportedswitchesG8124E, G8264, G8264T,G8264CSAll 10 GbE switches G8272, G8264CS, andG8264 (NOS 7.9 or later)Number ofvNICs perphysical 10Gb port4 (3 if storage functions areused to provide a vHBA)4 (3 if storage) 4 (3 if storage)MinimumvNICbandwidth100 Mb 100 Mb 100 MbServer-to-switchbandwidthlimit per vNICYes No Yes, maximum burstallowed and minimumguaranteeEmulex VFA5.2 Adapter Family for System x 11 |
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