What is the administrative distance of summary EIGRP?

5
Now look at the routing table. It shows that the RIP routes are preferred. They are learned with an administrative distance of 90, although the default is 120….Default Distance Value Table.

What is automatic summarization EIGRP?

Auto summarization is a feature which allows Enhanced Interior Gateway Routing Protocol (EIGRP) to summarize its routes to their classful networks automatically. For example, consider we are planning to use eight subnets of class B default network 172.16. 0.0/16, subnetted using a three-bit subnetting as shown below.

What is a disadvantage of using EIGRP automatic summarization?

What is a disadvantage of using EIGRP automatic summarization? It creates inconsistent routing when the network has discontiguous networks. When an organization has discontiguous networks, automatic summarization can cause inconsistent routing.

In which scenario will the use of EIGRP automatic summarization?

In which scenario will the use of EIGRP automatic summarization cause inconsistent routing in a network? If there are discontiguous IPv4 networks, automatic summarization causes inconsistent routing because routes are summarized at classful boundaries.

How is administrative distance set?

To set an administrative distance:

1. For RIP and OSPF, issue the distance command in Router Configuration mode. host1(config-router)#distance 100. The range for administrative distance is 0–255.
2. For IS-IS, issue the distance ip command in Router Configuration mode. host1(config-router)#distance 80 ip.

What is meant by auto summarization?

Automatic summarization is the process by a which computer program creates a shortened version of text.

What is Auto-summary in routing protocols?

Auto summarization is a feature which allows Routing Information Protocol (RIP) to summarize its routes to their classful networks automatically.

What is the administrative distance of externally learned EIGRP routes?

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Where are EIGRP successor routes stored?

Successor routes are saved in the topology table to be used if the primary route fails. Successor routes are flagged as “active” in the routing table. A successor route may be backed up by a feasible successor route. Successor routes are stored in the neighbor table following the discovery process.

What is the administrative distance of a static route?

1
Static routes have a default administrative distance of 1. A router prefers a static route to a dynamic route because the router considers a route with a low number to be the shortest.

Which table is used by EIGRP to store all routes that are learned from EIGRP neighbors?

Topology table – stores routing information learned from neighbor routing tables. This table stores every EIGRP route inside the autonomous system. The topology table also holds the metrics for each of the listed EIGRP routes, the feasible successor and the successors.

Which is the auto summarization feature in EIGRP?

Two methods for summarizing routes exist: automatic summarization and manual summarization. By default, EIGRP has the auto summary feature enabled. Because of this, routes are summarized to classful address at network boundaries in the routing updates.

When to use EIGRP in the routing table?

The ip summary-address eigrp command is used to configure interface-level address summarization. EIGRP summary routes are given an administrative distance value of 5. The administrative distance metric is used to advertise a summary without installing it in the routing table.

What are the advantages and disadvantages of EIGRP?

One of the advantages of EIGRP over some other routing protocols (like OSPF) is that manual summarization can be done on any router within a network. A single route can be used to represent multiple routes, which reduces the size of routing tables in a network. Manual summarization is configured on a per-interface basis.

How to use EIGRP in autonomous system 209?

The following example allows EIGRP to use up to 75 percent (42 kbps) of a 56-kbps serial link in autonomous system 209: Sets a bandwidth value for an interface. To configure the hello interval for an Enhanced Interior Gateway Routing Protocol (EIGRP) process, use the ip hello-interval eigrp command in interface configuration mode.