computer networks, the routers or the bridges find the shortest path to the destination router
-y using which of the following methods?
Answers
Answer:
Explanation:
A Router is a process of selecting path along which the data can be transferred from source to the destination. Routing is performed by a special device known as a router.
A Router works at the network layer in the OSI model and internet layer in TCP/IP model
A router is a networking device that forwards the packet based on the information available in the packet header and forwarding table.
The routing algorithms are used for routing the packets. The routing algorithm is nothing but a software responsible for deciding the optimal path through which packet can be transmitted.
The routing protocols use the metric to determine the best path for the packet delivery. The metric is the standard of measurement such as hop count, bandwidth, delay, current load on the path, etc. used by the routing algorithm to determine the optimal path to the destination.
The routing algorithm initializes and maintains the routing table for the process of path determination.
Routing Metrics and Costs
Routing metrics and costs are used for determining the best route to the destination. The factors used by the protocols to determine the shortest path, these factors are known as a metric.
Metrics are the network variables used to determine the best route to the destination. For some protocols use the static metrics means that their value cannot be changed and for some other routing protocols use the dynamic metrics means that their value can be assigned by the system administrator.
The most common metric values are given below:
Hop count: Hop count is defined as a metric that specifies the number of passes through internetworking devices such as a router, a packet must travel in a route to move from source to the destination. If the routing protocol considers the hop as a primary metric value, then the path with the least hop count will be considered as the best path to move from source to the destination.
Delay: It is a time taken by the router to process, queue and transmit a datagram to an interface. The protocols use this metric to determine the delay values for all the links along the path end-to-end. The path having the lowest delay value will be considered as the best path.
Bandwidth: The capacity of the link is known as a bandwidth of the link. The bandwidth is measured in terms of bits per second. The link that has a higher transfer rate like gigabit is preferred over the link that has the lower capacity like 56 kb. The protocol will determine the bandwidth capacity for all the links along the path, and the overall higher bandwidth will be considered as the best route.
Computer networks, the routers or the bridges find the shortest path to the destination router
Explanation:
Open Shortest Path initial (OSPF) could be a link-state routing protocol wont to realize the most effective path between a supply and destination router (using its own shortest path). OSPF is developed by the web Engineering Task Force (IETF) mutually of the interior entry Protocols (IGP), i.e. protocols supposed to move packets inside a bigger autonomous system or routing domain. it's a network layer protocol that operates on protocol range eighty nine and uses AD worth one hundred ten.
OSPF Terms -
Router ID – this is often the best active science address on the router. First, the best loopback address is taken into account. If no loopback is designed then the best active science address on the router's interface is assumed.
Router Priority - this is often AN 8-bit worth allotted to a router operational OSPF, that is employed to pick DR and BDR in broadcast networks.
Selected Router (Dr) - this is often chosen to attenuate the quantity of adjacencies shaped. DR distributes LSAs to all or any different routers. DR is chosen in a very broadcast network, with all different routers sharing their DBD. in a very broadcast network, a router request for updates to the DR ANd DR would answer that request with an update.