Computer Networks - Routing and protocols

Computer Networks - Routing and protocols - What Are...

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What Are Routers? Routers are an intermediate system at the network layer that is used to connect networks together based on a common network layer protocol
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Router types Router types Example Hardware router A device that performs routing as a dedicated function Software router A router that is not dedicated to performing routing only, but performs routing as one of multiple processes running on the router computer
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Main routing components include: Routing interface Routing protocol Routing table
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What Are Routing Interfaces? A routing interface is an interface over which IP packets are forwarded
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What Are Routing Protocols? A routing protocol is a set of messages that routers use to determine the appropriate path to forward data RIP RIP Designed for small to medium-size networks Uses a routing table Easier to configure and manage Does not scale well Designed for small to medium-size networks Uses a routing table Easier to configure and manage Does not scale well OSPF OSPF Designed for large to very large networks Uses a link-state database Complex to configure and manage Operates efficiently in large networks Designed for large to very large networks Uses a link-state database Complex to configure and manage Operates efficiently in large networks
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What Are Routing Tables? A routing table is a series of entries called routes that contain information about the location of the network IDs in the internetwork
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Interior Routing Protocols The internet is a connection of many different networks. We have seen how to navigate around this big system How do we make our routing decisions within a network?
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Autonomous Systems Owned and administered by a single organization Frequently a backbone system connecting a
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Computer Networks - Routing and protocols - What Are...

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