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Multiple Spanning Tree Instance (MSTI): Unlike IST, this kind of instance comprises all static VLANs specifically assigned to it and at least, must include one VLAN. While each MSTI can have multiple VLANs, each VLAN can be associated with only one MSTI .
The Multiple Spanning Tree Protocol (MSTP), originally defined in IEEE 802.1s-2002 and later merged into IEEE 802.1Q-2005, defines an extension to RSTP to further develop the usefulness of VLANs. In the standard, a spanning tree that maps one or more VLANs is called a multiple spanning tree (MST). Under MSTP, a spanning tree can be defined for ...
SPBV supports shortest path trees but SPBV also builds a spanning tree which is computed from the link state database and uses the Base VID. This means that SPBV can use this traditional spanning tree for computation of the common and internal spanning tree (CIST). The CIST is the default tree used to interwork with other legacy bridges.
However, using switches to connect multiple Ethernet networks in a fault-tolerant fashion requires redundant paths through that network, which in turn requires a spanning tree configuration. This ensures that there is only one active path from any source node to any destination on the network.
IEEE 802.1Q, often referred to as Dot1q, is the networking standard that supports virtual local area networking (VLANs) on an IEEE 802.3 Ethernet network. The standard defines a system of VLAN tagging for Ethernet frames and the accompanying procedures to be used by bridges and switches in handling such frames.
VLAN Classification by Protocol and Port Incorporated into 802.1Q-2003 802.1u-2001 Technical and Editorial corrections for 802.1Q-1998 Incorporated into 802.1Q-2003 802.1s-2002: Multiple Spanning Trees: Incorporated into 802.1Q-2003 802.1Q-2003: Virtual Bridged Local Area Networks (Rollup of 802.1Q-1998, 802.1s, 802.1u and 802.1v)
IEEE 802.1D is the Ethernet MAC bridges standard which includes bridging, Spanning Tree Protocol and others. It is standardized by the IEEE 802.1 working group. It includes details specific to linking many of the other 802 projects including the widely deployed 802.3 (Ethernet), 802.11 (Wireless LAN) and 802.16 (WiMax) standards.
STP Spanning Tree Protocol; Split multi-link trunking Protocol; Token Ring a protocol developed by IBM; the name can also be used to describe the token passing ring logical topology that it popularized. Virtual Extended Network (VEN) a protocol developed by iQuila. VTP VLAN Trunking Protocol; VLAN Virtual Local Area Network