HP Intelligent Management Center v7.0 VAN Fabric Manager Administrator Guide

SPB Shortest Path Bridging is a technology that creates large and flat non-blocking Layer 2 network.
The SPB technology requires the SPB protocol, which is a bridging method of IEEE 802.1aq and
the extension of the Spanning Tree Protocol (STP).
SPB device An SPB device is a network device (typically a switch) that supports the SPB technology. SPB
devices include backbone edge bridges (BEBs) and backbone core bridges (BCBs).
SPBM Shortest Path Bridging MAC Mode (SPBM) is a bridging method of IEEE 802.1aq SPB. It
encapsulates Ethernet frames into MAC-in-MAC frames and forwards them in compliance with
IEEE 802.1ah PBB.
SPBN In VFM, SPBN is a network implementing the SPBM protocol, also called an SPBM network. From
the perspective of a user, SPBN is a Layer 2 switching network through which Layer 2 connection
can be set up between nodes. You must enable SPB function on all network devices in an SPBN
network.
T
Transit mode When an FCoE switch is operating in Transit mode, it can place its Ethernet interfaces in ENode
mode or FCF mode to receive traffic only from specific ENode or FCF switches.
Transit RB A transit RB is the intermediate node through which a frame passes the TRILL network.
Transit switch A transit switch is an FCoE switch in Transit mode. Its Ethernet interfaces can operate in ENode
mode or FCF mode. VFM does not manage transit switches.
TRILL Transparent Interconnection of Lots of Links (TRILL) uses Intermediate System-to-Intermediate System
(IS-IS) to provide transparent Layer 2 forwarding. TRILL combines the simplicity and flexibility of
Layer 2 switching with the stability, scalability, and rapid convergence capability of Layer 3
routing.
TRILL device A TRILL device is a routing bridge (RB).
V
VFC A virtual fiber channel (VFC) interface is a logical interface that is manually created on the FCF
switch to simulate the function of a physical FC interface. A VFC interface must be bound to a
physical Ethernet interface. VFC interfaces support E mode, F mode (the default), and NP mode.
VFM VAN Fabric Manager (VFM) is an IMC Platform-based network management software for managing
data centers.
VLink A virtual link (VLink) connects two EVI devices that belong to different DCs.
VM migration Virtual machine (VM) migration refers to the process that the VM migrates from one server onto
another.
VSAN The virtual storage area network (VSAN) technology breaks a physical SAN into multiple isolated
VSANs, and provides secure, reliable, and flexible services. Devices in a VSAN cannot get
information about any other VSANs and devices in the VSANs. Each VSAN performs the following
operations independently: selecting a principal switch, assigning domain IDs, running routing
protocols, maintaining routing table and FIB table, and providing services.
VSI An SPB virtual switch instance (VSI) provides MAC-in-MAC tunnel service for Ethernet service
instances.
W
WRR WRR is an algorithm for scheduling the queues in turn. WRR queuing schedules all the queues
in turn to ensure every queue is served for a certain time. Assume a port provides eight output
queues. WRR assigns each queue a weight value (represented by w7, w6, w5, w4, w3, w2,
w1, or w0) to decide the proportion of resources assigned to the queue. On a 100 Mbps port,
you can configure the weight values of WRR queuing to 50, 30, 10, 10, 50, 30, 10, and 10
(corresponding to w7, w6, w5, w4, w3, w2, w1, and w0, respectively). In this way, the queue
with the lowest priority can get a minimum of 5 Mbps of bandwidth.
WWN The World Wide Name (WWN) is a 64-bit address that identifies a fabric or an entity (such as
an FC switch, node, or port) in an FC SAN. The upper-layer protocol of FC uses WWNs for
communication. Each entity has a factory-assigned globally unique WWN.
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