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For example, the sample diagram does not indicate the physical type of connection between the PCs and the switch, but since a modern LAN is depicted, Ethernet may be assumed. If the same style of line was used in a WAN (wide area network) diagram, however, it may indicate a different type of connection.
Each routing protocol contains loop-avoidance mechanisms, but the information needed for loops to be avoided is lost when routes are redistributed. For example, a distance-vector routing protocol may prevent loops by the "split-horizon" rule; that is to say, if a router learns a route from a particular interface it will not re-advertise the ...
Static routes are routes that a network administrator manually configured. Routing tables are also a key aspect of certain security operations, such as unicast reverse path forwarding (uRPF). [ 2 ] In this technique, which has several variants, the router also looks up, in the routing table, the source address of the packet.
If there are multiple routes with the same subnet mask, the route with the lowest metric is used. If there are multiple default routes, the metric is also used to determine which to use. If there are multiple routes with the same subnet mask and metric, the system may use equal-cost multi-path routing as a forwarding strategy.
Cisco literature refers to Enhanced Interior Gateway Routing Protocol (EIGRP) as a "hybrid" protocol, [12] despite the fact it distributes routing tables instead of topology maps. However, it does synchronize routing tables at start-up as OSPF does and sends specific updates only when topology changes occur.
A picture with a routing in geographical space is often called a route map. While the road map and transit map (such as the railway map, metro map, bus map, etc.) show all the roads or lines, the route map regularly shows one rad for a particular occasion. Likewise a ground plan or site map show all the space, buildings and/or rooms, the ...
Route Status: A route is marked either "active" or "passive". "Passive" routes are stable and can be used for data transmission. "Active" routes are being recalculated, and/or not available. Routing table contains the best route(s) to a destination (in terms of the lowest "metric"). These routes are the successors from the topology table.
If the template has a separate documentation page (usually called "Template:template name/doc"), add [[Category:Routemap templates]] to the <includeonly> section at the bottom of that page.