What is the difference between feasible distance and advertised distance?

What is the difference between feasible distance and advertised distance?

The advertised distance, your neighbor tells you how far it is for him to reach the destination and the feasible distance which is your total distance to get to the destination.

What is the distance of a ad?

From Wikipedia, the free encyclopedia. Administrative distance (AD) or route preference is a number of arbitrary unit assigned to dynamic routes, static routes and directly-connected routes.

What is administrative distance AD )? Using examples show why a router must use it to choose between routes learned using different routing protocols?

The administrative distance (AD) is a number used to rate the trustworthiness of the routing information received from a neighbor router. It is used when a router must choose between routes learned using different routing protocols. Each routing protocol has a default AD value.

What does administrative distance mean?

Administrative distance refers to the trustworthiness of a particular route. A router first installs routes with higher administrative distances. Routes with the smallest metric to a destination indicate the best path.

Which area is known as backbone area?

area 0
The backbone area (also known as area 0 or area 0.0. 0.0) forms the core of OSPF networks. All other areas should be connected to the backbone area either by a direct link or by virtual link configuration.

What is difference between AD & FD?

confused with the difference between AD and FD the new BSCI book gives a some what confusing definition that sounds the same for both. It says AD is the cost between the next hop router and the destination. And FD is the sum. Then that would mean to me they’re both the same thing.

What is the range of ad values?

Administrative Distance (AD) is a numeric value which can range from 0 to 255.

Why is ad value used?

Administrative Distance (AD) is used to rate the trustworthiness of routing information received from the neighbor router. The route with the least AD will be selected as the best route to reach the destination remote network and that route will be placed in the routing table.

What is administrative distance and why is it important?

Administrative Distance (AD) is a value that routers use in order to select the best path when there are two or more different routes to the same destination from two different routing protocols. Administrative Distance counts the reliability of a routing protocol.

For what purpose is an administrative distance ad used?

What administrative distance ad is used to advertise routes learned from other protocols that are redistributed into EIGRP?

Understanding Administrative Distance

Type of Route Administrative Distance
External BGP 20
IGRP 100
OSPF 110

What is OSPF area range?

The area range command is used only with area border routers (ABRs). It is used to consolidate or summarize routes for an area. The result is that a single summary route is advertised to other areas by the ABR. Routing information is condensed at area boundaries.

What is the difference between advertised distance and feasible distance?

the neighbor’s advertised distance (AD) for the route must be less than the successor’s feasible distance (FD). The following example explains the concept of a successor and a feasible successor.

What is feasible distance (FD) and reported distance (Rd)?

Feasible distance (FD) – the metric of the best route to reach a network. That route will be listed in the routing table. Reported distance (RD) – the metric advertised by a neighboring router for a specific route. It other words, it is the metric of the route used by the neighboring router to reach the network.

What is administrative distance in router design?

Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. Administrative distance is a measure of the trustworthiness of the source of the routing information.

Why would you change the administrative distance of a route?

One common reason to change the administrative distance of a route is when you use Static Routes to backup and existing IGP route. This is normally used to bring up a backup link when the primary fails. For example, assume that you use the routing table from R1.