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NETW204 Week 2


Border Gateway Protocol (BGP) Used between Internet service providers (ISP) as well as between ISPs and their larger private clients to exchange routing information.
Dynamic Routing Protocols Exchange of routing information between routers. Dynamically learn information about remote networks and determines the best path to each network.
Routing Protocol A set of processes, algorithms, and messages that are used to exchange routing information and populate the routing table with the routing protocol's choice of best paths.
Algorithm A finite list of steps used in accomplishing a task
Autonomous System (AS) Is a collection of routers under a common administration.
Interior Gateway Protocols (IGP) Used for intra-autonomous system routing which is routing inside an autonomous system
Exterior Gateway Protocols (EGP) Used for inter-autonomous system routing which is routing between autonomous systems
Distance Vector Routes are advertised as vectors of distance and direction.
Classful Routing Protocols Do not send subnet mask information in routing updates.
Classless Routing Protocols Include the subnet mask with the network address in routing updates
Convergence When the routing tables of all routers are at a state of consistency.
Convergence Time The time it takes routers to share information, calculate best paths and update their routing tables
Metrics Is a way to measure or compare in order to determine which route is the best path and assign costs to reach remote networks.
Neighbors Are routers that share a link and use the same routing protocol.
Network discovery A part of the process of the routing protocol algorithm that enables routers to first learn about remote networks
Split Horizon Prevents information from being sent out the same interface from which it was received
Periodic Updates Refers to the fact that a router sends the complete routing table to its neighbors at a predefined interval.
Triggered Update Is a routing table update that is sent immediately in response to a routing change.
Routing Loop A condition in which a packet is continuously transmitted within a series of routers without ever reaching its intended destination network.
Count To Infinity Is a condition that exists when inaccurate routing updates increase the metric value to "infinity" for a network that is no longer reachable.
Route Poisoning Used to mark the route as unreachable in a routing update that is sent to other routers.
Time To Live (TTL) Is an 8-bit field in the IP header that limits the number of hops a packet can traverse through the network before it is discarded.
Created by: AZ4ME