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What is the default administrative distance assigned to all OSPF routes?

By default, OSPF has a default administrative distance of 110 and RIP has a default administrative distance of 120. Administrative distance values can, however, usually be adjusted manually by a network administrator.

What is the default administrative distance of OSPF?

The range for administrative distance is 0–255. The default value is 120 for RIP routes and 110 for OSPF routes.

Setting the Administrative Distance for a Route.

Route Source Default Distance
OSPF 110
IS-IS 115
RIP 120
Internal BGP 200

What is the administrative distance of a directly connected route?

An administrative distance is a number between 0 and 255, with the lower number being better. The AD of 0 indicates the most trusted route (the directly connected network). The AD of 255 means that the route will not be trusted.

What is the default route preference for OSPF internal?

In the same scenario, Junos OS chooses the OSPF route, because of the default preference 10 for an internal OSPF route and 150 for an external OSPF route, which are both lower than the 170 preference assigned to all BGP routes.

What is administrative distance value?

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

What is the best possible value for administrative distance?

Administrative Distance (AD) is a numeric value which can range from 0 to 255. A smaller Administrative Distance (AD) is more trusted by a router, therefore the best Administrative Distance (AD) being 0 and the worst, 255.

What route would have the lowest administrative distance?

The most believable route or the route with the lowest administrative distance is one that is directly connected to a router.

Which type of route has an administrative distance of 1?

Administrative Distance

Route type Administrative distance
Connected interface
Static route 1
EIGRP summary route 5
External BGP 20

What is the administrative distance for BGP?

Default Distance Value Table

Route Source Default Distance Values
External Border Gateway Protocol (BGP) 20
Internal EIGRP 90
IGRP 100
OSPF 110

What is a direct or connected route?

Directly connected routes are always the best path to a subnet. Since they are configured directly on a router’s interface, they get an administrative distance of 0. When an IP address is added to an interface, the router will automatically create a directly connected route in its forwarding table.

What is the role of route preference?

What is the role of route preference? A. It is used as a tiebreaker when the same prefix is available through multiple protocols. … It is used to select the best route between multiple equal-cost paths.

How does OSPF determine forward traffic?

If there are multiple routes to a network with the same route type, the OSPF metric calculated as cost based on the bandwidth is used for selecting the best route. The route with the lowest value for cost is chosen as the best route.

Where should we use default routing?

Explanation: We must use default routing on stub networks. They have only one exit path out of the network, so there can be no specific path decided for such networks.

How does BGP choose the best path?

If there are no specific settings that can affect the outcome, BGP Best Path Selection Algorithm determines the best route by selecting the shortest path to the destination. An Autonomous System is a single network or a set of networks and routers, which are under the control of one administrative entity.

Is OSPF better than Eigrp?

OSPF scales better than EIGRP because EIGRP is more complex in very large scale networks while troubleshooting. Compared to EIGRP, OSPF is better to use on WAN since most of the service providers support it. OSPF have already been running in internal environments as an IGP (Interior Gateway Protocol).

What is the main disadvantage of using RIP?

Limitations of RIP-1 include the following: RIP cannot support an internal network with more than 15 hops within the same network. A router counts the hops a packet makes as it crosses other routers on the way to its destination. RIP cannot support variable-length subnet masking.

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