Fault Tolerance (information Systems)

Running head : Fault Tolerance[ clear of Student][Name of Institution]Fault ToleranceNetwork Fault ToleranceFault Tolerant provides steep levels of availability and reliability in earnings connections . Used with wasted profits larboard hardw be , Fault Tolerant allows the drug user to maintain persistent sessions during a hardware failure or a routing outage or change . Redundant network interface hardware is required to use this featureIt has been estimated that more than 80 of network downtime is spent looking for network problems , while less than 20 is spent actually fixing them . The need for accurate , apropos root designer analysis and force correlation is accordingly paramount Although many vendors and products have attempted root cause analysis , very few actually deliver this aptitude . Some employ mathematical or systems models formed in the academy . Others are based on simple event filtering schemesAll networks demand 24x7 reliability . In a work environs where one minute of downtime can mean tens of thousands of dollars in incapacitated sales and productivity , you can t afford to have a network failureAlthough network topologies like FDDI and ATM offer accuse-tolerant network connections , most networks are built on Ethernet and Fast Ethernet backbones , which do not . Fortunately vendors are responding with innovative ways to channel fault tolerance to these networksThe basic component in fault Tolerance is SNMP The Simple Network Management Protocol (SNMP ) allows you to carry off a node running the SNMP Master doerThe SNMP supports the following featuresMIB II and its SNMP derivatives (as specify in RFC 1213 and RFC 1215 , includingStatistics countersIP and SNMP managementInterface managementInterface manikinMIB II SNMP version 1 traps or version 2 notificationsAdditional Management of Proprietary MIB itemsThe SNMP implementation richly supports GET and SET requestsThe SNMP implementation listens on port 161 for SNMP requests and on port 162 for SNMP traps .

These are the ports recommended by RFC 1906Master Agent and Sub-Agent ArchitectureSNMP support is provided by a run-time extensible SNMP agent The extensible SNMP agent is partitioned into a master agent and multiple sub-agentsThis allowsUsers to be able to arrange new Athena protocol binaries containing renderitional sub-agents without re-releasing the master agent or any other Athena /Access binary star . SNMP support for protocol feature additions are accomplished by updating the protocol sub-agent without re-releasing the master agentUsers can dynamically add /delete protocol tasks at run-timeThe SNMP family of agents (master agent and sub-agents ) are unreserved to the Network Management StationSNMP Community and Trap SupportThe following items are configurableSNMP Community Table (read-create origination NumberCommunity Name (Configure a Community Name for each entryAccess Level (read-write (Allow or dis-allow SNMP operations to modify configuration for the specified communitySNMP Community holler Table (read-createCommunity Entry NumberAddress Entry Number (Configure up to two entries for the above specified CommunityIP Address (Configure an IP address for this entry in the above specified CommunityTrap Level (0-7 (A severity level filter for the above specified...If you trust to get a full essay, order it on our website: Orderessay

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