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In computer networking, the Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway. Version 1 of the protocol was described in RFC 2281 in 1998.
In 1997, Cisco informed the IETF that it had patents in this area and, in 1998, pointed out its patent on HSRP. [2] Nonetheless, IETF continued work on VRRP . After some debate, the IETF VRRP working group decided to approve the standard, despite its reliance on patented techniques, as long as Cisco made the patent available to third parties ...
A first hop redundancy protocol (FHRP) is a computer networking protocol which is designed to protect the default gateway used on a subnetwork by allowing two or more routers to provide backup for that address; [1] [2] in the event of failure of an active router, the backup router will take over the address, usually within a few seconds.
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Cisco Hot Standby Router Protocol (HSRP) [162] [self-published source] 1998: Yes: Cisco X.25 over TCP service 2000: Yes: Cisco Skinny Client Control Protocol (SCCP) 2001–2009: Unofficial: hexss http server (python package) 2010: Unofficial: Artemis: Spaceship Bridge Simulator [163] 2033: Unofficial: Civilization IV multiplayer [164] 2049: Yes ...
A fault tree diagram. Fault tree analysis (FTA) is a type of failure analysis in which an undesired state of a system is examined. This analysis method is mainly used in safety engineering and reliability engineering to understand how systems can fail, to identify the best ways to reduce risk and to determine (or get a feeling for) event rates of a safety accident or a particular system level ...