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- Hot_Standby_Router_Protocol abstract "Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway, and has been described in detail in RFC 2281.The protocol establishes a framework between network routers in order to achieve default gateway failover if the primary gateway becomes inaccessible, in close association with a rapid-converging routing protocol like EIGRP or OSPF. By multicasting packets, HSRP sends its hello messages to the multicast address 224.0.0.2 (all routers) for version 1, or 224.0.0.102 for version 2, using UDP port 1985, to other HSRP-enabled routers, defining priority between the routers. The primary router with the highest configured priority will act as a virtual router with a pre-defined gateway IP address and will respond to the ARP request from machines connected to the LAN with the MAC address 0000.0c07.acXX where XX is the group ID in hex. If the primary router should fail, the router with the next-highest priority would take over the gateway IP address and answer ARP requests with the same mac address, thus achieving transparent default gateway fail-over.HSRP is not a routing protocol as it does not advertise IP routes or affect the routing table in any way.HSRP has the ability to trigger a failover if one or more interfaces on the router go down. This can be useful for dual branch routers each with a single serial link back to the head end. If the serial link of the primary router goes down, the backup router would take over the primary functionality and thus retain connectivity to the head end.".
- Hot_Standby_Router_Protocol wikiPageExternalLink view.php?cid=847&protocol=HSRP&title=2.%20RFC2281%20state%20table.
- Hot_Standby_Router_Protocol wikiPageExternalLink view.php?cid=882&protocol=HSRP&title=4.%20Link%20down%20lab.
- Hot_Standby_Router_Protocol wikiPageExternalLink technologies_tech_note09186a0080094a91.shtml.
- Hot_Standby_Router_Protocol wikiPageExternalLink 441-hot-standby-routing-protocol.html.
- Hot_Standby_Router_Protocol wikiPageExternalLink www.szukalak.ovh.org:.
- Hot_Standby_Router_Protocol wikiPageID "854478".
- Hot_Standby_Router_Protocol wikiPageRevisionID "603184034".
- Hot_Standby_Router_Protocol hasPhotoCollection Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol subject Category:Cisco_protocols.
- Hot_Standby_Router_Protocol type Abstraction100002137.
- Hot_Standby_Router_Protocol type CiscoProtocols.
- Hot_Standby_Router_Protocol type Communication100033020.
- Hot_Standby_Router_Protocol type Direction106786629.
- Hot_Standby_Router_Protocol type Message106598915.
- Hot_Standby_Router_Protocol type Protocol106665108.
- Hot_Standby_Router_Protocol type Rule106652242.
- Hot_Standby_Router_Protocol comment "Hot Standby Router Protocol (HSRP) is a Cisco proprietary redundancy protocol for establishing a fault-tolerant default gateway, and has been described in detail in RFC 2281.The protocol establishes a framework between network routers in order to achieve default gateway failover if the primary gateway becomes inaccessible, in close association with a rapid-converging routing protocol like EIGRP or OSPF.".
- Hot_Standby_Router_Protocol label "HSRP".
- Hot_Standby_Router_Protocol label "HSRP".
- Hot_Standby_Router_Protocol label "Hot Standby Router Protocol".
- Hot_Standby_Router_Protocol label "Hot Standby Router Protocol".
- Hot_Standby_Router_Protocol label "Hot Standby Router Protocol".
- Hot_Standby_Router_Protocol label "Hot Standby Router Protocol".
- Hot_Standby_Router_Protocol label "Hot Standby Router Protocol".
- Hot_Standby_Router_Protocol sameAs Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol sameAs HSRP.
- Hot_Standby_Router_Protocol sameAs Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol sameAs Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol sameAs Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol sameAs m.03hh7k.
- Hot_Standby_Router_Protocol sameAs Q1630757.
- Hot_Standby_Router_Protocol sameAs Q1630757.
- Hot_Standby_Router_Protocol sameAs Hot_Standby_Router_Protocol.
- Hot_Standby_Router_Protocol wasDerivedFrom Hot_Standby_Router_Protocol?oldid=603184034.
- Hot_Standby_Router_Protocol isPrimaryTopicOf Hot_Standby_Router_Protocol.