Provider Backbone Bridge (PBB) IEEE 802.1ah Defines a MAC-in-MAC data. This paper describes the main characteristics, processes and mechanisms of SCS, presents some lab and simulation experiments with STP and SCS, and provides demonstrations that SCS provides a more reliable service than STP variants, and a more cost effective alternative to TRILL and SPB network dependability. ISIS-SPB A version of IS-IS link state protocol that supports SPB TLV extensions. It has the following advantages: it is configuration-free, thus less vulnerable to human mistakes it enhances the network stability and performance when comparing with STP and it is suitable to the range of equipment and networks that typically run STP variants, minimizing the need for potential large investments required by TRILL and SPB. With SPB you can build large loop-free multipath equal cost topologies. SPB uses a link state routing protocol to allow switches to learn the shortest paths through an Ethernet fabric and dynamically adjust to topology changes. In this paper we propose Self-Configurable Switches Protocol (SCS) as an alternative to all these protocols. SPB has support for multicast traffic routing natively built in SPB is an open industry standard, IEEE and IETF. The recent protocols, IETF TRILL and IEEE SPB, target mainly data center networks, are based on complex concepts, require great processing power from switches and huge investment in new gear. Several protocols and variants exist targeting the replacement of STP variants, most of them proprietary and with limited scope of operation. The Spanning Tree Protocol (STP) is known to have stability problems and poor convergence intervals.
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