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Overview of OSPF area types and accepted LSAs: [21] [22] Within a single area Inter area Area type LSA 1 - router: LSA 2 - network: LSA 7 - NSSA external: LSA 3 - network summary: LSA 4 - ASBR Summary: LSA 5 - AS external: Backbone Yes Yes No, converted into a Type 5 by the ABR Yes Yes Yes Non-backbone Yes Yes No, converted into a Type 5 by the ...
Link-state routing protocols are one of the two main classes of routing protocols used in packet switching networks for computer communications, the others being distance-vector routing protocols. [1] Examples of link-state routing protocols include Open Shortest Path First (OSPF) and Intermediate System to Intermediate System (IS-IS). [2]
In Open Shortest Path First (OSPF), flooding is used for transferring updates to the topology . In low data rate communications, flooding can achieve fast and robust data communications in dedicated protocols such as VEmesh, [ 3 ] which operates in the Sub-1 GHz frequency band and Bluetooth mesh networking , which operates in the 2.4 GHz ...
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.
The link-state advertisement (LSA) is a basic communication means of the OSPF routing protocol for the Internet Protocol (IP). It communicates the router's local routing topology to all other local routers in the same OSPF area.
An OSPF stubby area is one which receives routes from other areas in the OSPF domain but for external routes, which are communicated via a Type 5 Link-state advertisement, the stubby area is only aware of a default route; An OSPF totally stubby area is one which only has a default route to the rest of the OSPF routing domain. Such an area may ...
An interior gateway protocol (IGP) or interior routing protocol is a type of routing protocol used for exchanging routing table information between gateways (commonly routers) within an autonomous system (for example, a system of corporate local area networks). [1] This routing information can then be used to route network-layer protocols like IP.
A network and wildcard mask combination of 1.1.1.1 0.0.0.0 would match an interface configured exactly with 1.1.1.1 only, and nothing else. Wildcard masks are used in situations where subnet masks may not apply. For example, when two affected hosts fall in different subnets, the use of a wildcard mask will group them together.