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This is known as N-model redundancy, where faults cause automatic fail-safes and a warning to the operator, and it is still the most common form of level one fault-tolerant design in use today. Voting was another initial method, as discussed above, with multiple redundant backups operating constantly and checking each other's results.
A fault-tolerant computer system can be achieved at the internal component level, at the system level (multiple machines), or site level (replication).. One would normally deploy a load balancer to ensure high availability for a server cluster at the system level. [3]
Multi-link trunking (MLT) is a link aggregation technology developed at Nortel in 1999. It allows grouping several physical Ethernet links into one logical Ethernet link to provide fault-tolerance and high-speed links between routers, switches, and servers.
The Spanning Tree Protocol (STP) is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning tree also allows a network design to include backup links providing fault tolerance if an active link fails.
HSR nodes check the redundancy continuously to detect lurking failures. HSR is typically used in a ring topology or in another mesh topology. Nodes with single attachment (such as a printer) are attached through a RedBox (Redundancy Box). Redundant connections to other networks are possible, especially to a Parallel Redundancy Protocol (PRP ...
Geographic redundancy is used by Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, Netflix, Dropbox, Salesforce, LinkedIn, PayPal, Twitter, Facebook, Apple iCloud, Cisco Meraki, and many others to provide geographic redundancy, high availability, fault tolerance and to ensure availability and reliability for their cloud ...
This in turn contributes to fault-tolerance and reduced maintenance costs. [1] Mesh topology may be contrasted with conventional star/tree local network topologies in which the bridges/switches are directly linked to only a small subset of other bridges/switches, and the links between these infrastructure neighbours are hierarchical. While star ...
EtherChannel between a switch and a server. EtherChannel is a port link aggregation technology or port-channel architecture used primarily on Cisco switches.It allows grouping of several physical Ethernet links to create one logical Ethernet link for the purpose of providing fault-tolerance and high-speed links between switches, routers and servers.