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What two variables are used to determine which candidates are selected for the routing table?
administrative distance and metrics
What two metrics are used by EIGRPs routing algorithm to calculate route metrics?
Delay and bandwidth
What is true about the metrics used by routing protocols?
Metrics used by routing protocols are used to determine the best path for routing data packets. Different routing protocols use various metrics such as hop count, bandwidth, delay, load, and cost to make routing decisions. The choice of metric can impact the efficiency and effectiveness of the routing protocol in selecting optimal paths.
What variables are used to determine routing metrics?
mtu, bandwidth, delay, reliability, load
What are the features of wnhanced interrior gateway routing protocol eigrp?
It is a Hybrid routing protocol. It provides configurable metrics. It establishes formal neighbor relationships among routers.
What is the method a router uses to rank the reliability of routing information?
A Admin can set the Administrative Distance (AD) on a static route to tell the router how reliable the route is. Dynamic routing protocols use metrics to determine route reliability.
A router learns two paths with equal metrics to a destination network via the RIP routing protocol How will the router handle packets to the destination network?
The router will install both routes in the routing table and load balance between the two.
What is the process of sending routes from one routing protocol to another routing protocol?
The process of sending routes from one routing protocol to another is known as route redistribution. This involves configuring a router to accept routes learned from one routing protocol (such as OSPF or EIGRP) and advertise them into another routing protocol. To do this, network administrators typically use redistribution commands in the router's configuration, specifying the source and target protocols. Care must be taken to manage metrics and prevent routing loops during this process.
How do you calculate metrics?
Hop count & administrative distance. This is a measure used by the routing protocol to calculate the best path to a given destination, if it learns multiple paths to the same destination. Each routing protocol uses a different metric.
Why adaptive routing algorithms is called as intelligent routing?
Adaptive routing algorithms are termed "intelligent routing" because they dynamically adjust the paths for data packets based on real-time network conditions, such as congestion and link failures. This adaptability allows them to optimize network performance and reliability, ensuring efficient data transmission. By learning from the network's behavior and making decisions based on current metrics, these algorithms can enhance user experience and minimize delays. Their capability to respond to changes in the environment mimics intelligent decision-making processes.
What are the routing metrics for OSPF?
OSPF uses cost as its routing metric . cost is calculated for every outgoing interface of a router through which packets transfer. it is calculated by the formula cost = 100000000/(bandwidth of output interface) most likely bandwidth of serial int is 1544kb= 1544000 bytes PS: all cost calculation to be done in bytes for ease
What is dynamic routing?
Routing refers to the process of moving packets of information across a network. Static and dynamic routing are the two types of routing algorithms used for this transfer of information.The term routing encapsulates two tasks. These tasks are deciding the paths for data transferred and sending the packets on these paths. The routing is a process that is a function carried out at layer 3 of the OSI reference model. The routing algorithm decides the output line to transfer the incoming packets. The routing algorithms are based on the routing protocol that uses metrics to assess whether a particular path is the optimal path available for transfer of the data packets. The metrics used for evaluating the paths are bandwidth, delay and reliability. The routing algorithms use these protocols to determine an optimal path from the source to the destination. The routing tables maintain all the information related to routing. There are various routing algorithms and depending on these routing algorithms, the information stored in the routing table varies. Every router has its own routing table and it fills this table with the required information to calculate the optimal path between the source router and the destination router. To understand the basic points of static vs dynamic routing, let us get to know what are routing tables.Routing tableA routing table is a document stored in the router or a network computer. The routing table is stored in the form of a database or is simply a file stored in the router. The data entered in the routing table is referred to when the best possible path to transfer information across two computers in a network is to be determined. The two classifications, viz., static and dynamic routing, are based on the way in which the routing tables are updated every time they are used. The routers in which the data is stored and updated manually are called static routers. On the other hand, the routers in which the information is changed dynamically, by the router itself, are referred to as dynamic routers. Let us compare the two types of routing algorithms based on the static and dynamic routing algorithm used, in the static vs. dynamic routing section given below.Static Vs. Dynamic RoutingStatic routing manually sets up the optimal paths between the source and the destination computers. On the other hand, the dynamic routing uses dynamic protocols to update the routing table and to find the optimal path between the source and the destination computers.The routers that use the static routing algorithm do not have any controlling mechanism if any faults in the routing paths. These routers do not sense the faulty computers encountered while finding the path between two computers or routers in a network. The dynamic routing algorithms are used in the dynamic routers and these routers can sense a faulty router in the network. Also, the dynamic router eliminates the faulty router and finds out another possible optimal path from the source to the destination. If any router is down or faulty due to certain reasons, this fault is circulated in the entire network. Due to this quality of the dynamic routers, they are also called adaptive routers.The static routing is suitable for very small networks and they cannot be used in large networks. As against this, dynamic routing is used for larger networks. The manual routing has no specific routing algorithm. The dynamic routers are based on various routing algorithms like OSPF (Open Shortest Path First), IGRP (Interior Gateway Routing Protocol) and RIP (Routing Information Protocol).The static routing is the simplest way of routing the data packets from a source to a destination in a network. The dynamic routing uses complex algorithms for routing the data packets.The static routing has the advantage that it requires minimal memory. Dynamic router, however, have quite a few memory overheads, depending on the routing algorithms used.The network administrator finds out the optimal path and makes the changes in the routing table in the case of static routing. In the dynamic routing algorithm, the algorithm and the protocol is responsible for routing the packets and making the changes accordingly in the routing table.Nowadays, the static routing is seldom used. With the technological advancements, the dynamic routing is used to route the packets in the network, efficiently. Thus, the above algorithm explains routing, routing tables and static vs dynamic routing.
