EIGRP INTERVIEW QUESTIONS AND ANSWERS PDF

EIGRP have the administrative distance of 90 for internal-routes and for external-routes. Router for which the successor-route fails and no feasible-successor route exist moves to an active state and compelling the EIGRP process to send out query-packets and for reconverge. A passive state in EIGRP is a route which is oky and have not issue, a route for have there is an active successor route. In a stable network there will be all routes in Passive state.

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This protocol is developed by cisco systems as a registered algorithm, available only for cisco routers. It is also called a diffused update algorithm to define the shortest path. It is also measured as a hybrid routing protocol since it has the attributes of link-state routing protocols and distant vector. The neighbor table is filled with a neighbor relationship that is tracked in a table based on EIGRP routing and activity of convergence. The interface and address of the neighbor are introduced and recorded as a fresh entry of the neighbor table, whenever a new neighbor is introduced.

The table is validated for reliable and sequential delivery of packets. Topology table: This is a reference table for routing traffic in a network for routers. This routing table in the automatic system is available such as a router position in this table. Each router is based on the routing protocol and manages a topology table for every configured network protocol.

The routes lead to destination port based on the topology table. Route table: The paths of a particular source and destination are stored in routing tables. The data in the network topology is immediately placed around it. The main goal of routing protocols is to construct the path of the routing table. Network id, packets cost, and path of the packet and details of the next-hop details are available in the routing table. Answer: The different packets available in EIGRP are hello packets, update packets, query packets, reply packets, and ack packets.

If the router fails to get a hello packet within the estimated time, the particular router will be acknowledged as dead.

If any new neighbor packet is discovered, updated packets are transmitted, so that the topology table is updated by the nearby router. Update packets are transmitted reliably in a single direction. Whenever the destination turns into an active state, query packets are transmitted. Query packets work as multicast and responses are often sent to query to indicate the originator which does not need to go into an active state.

If the destination turns into an active state, reply packets are transmitted. Reply packets are unicast to the origin of the query and sending of reply packets is trustworthy. The act packets use to find the status of transmission. If any hello packets sent without information is considered as acknowledgment. The non-zero acknowledgment value is the unicast address that is sent by acks. Answer: The source and destination routers must be in the same primary subnet and should be configured to use the same k-values.

The source and destination router should have the identical authentication configuration with boundaries facing each other in parallel. They should not be passive. Is it mandatory to apply the eigrp log-neighbor-changes command when configuring eigrp? Answer: It is mandatory to use this command for easy determination and reduction of troubleshooting time.

Since EIGRP always searches data packets from the primary address, cisco advises configuring routers on considering subnet with the subnet of similar primary addresses. Popular Course in this category.

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OSPF Interview Questions and Answers

What does the word serno mean on the end of an EIGRP topology entry when you issue the show ip eigrp topology command? For example: show ip eigrp topology P When DRDBs are threaded to be sent, they are assigned a serial number. If you display the topology table at the time an entry is threaded, it shows you the serial number associated with the DRDB. Threading is the technique used inside the router to queue items up for transmission to neighbors. The updates are not created until it is time for them to go out the interface. Before that, a linked list of pointers to items to send is created for example, the thread.

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Top 76 EIGRP Interview Questions [UPDATED 2020]

Question 1. Does Eigrp Support Secondary Addresses? Since EIGRP sources data packets from the primary addresses, Cisco recommends that we configure all routers on a particular subnet with primary addresses that belong to the similar subnet. Question 2. It sends a query when a route is lost and another feasible route does not exist inside the topology table. When the SIA occurs, the router clears the neighbor that did not reply for the query. When it happens, determine which neighbor has been cleared.

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EIGRP Frequently Asked Questions

Answer:Will check the next hop attributes to determine next hop is accessible. Answer:Rip broadcast its routing table after reach 30 sec OSPF only entries the update of missing neighbor routing tables. Answer: Network all in all terms implies a gathering of gadgets, associated with the assistance of a few media so as to share a few assets from a source to a goal and networking is a procedure of sharing the assets. In client mode, no setup can be made. We can just check the reachability and some essential directions in that mode.

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EIGRP Interview Questions

This protocol is developed by cisco systems as a registered algorithm, available only for cisco routers. It is also called a diffused update algorithm to define the shortest path. It is also measured as a hybrid routing protocol since it has the attributes of link-state routing protocols and distant vector. The neighbor table is filled with a neighbor relationship that is tracked in a table based on EIGRP routing and activity of convergence. The interface and address of the neighbor are introduced and recorded as a fresh entry of the neighbor table, whenever a new neighbor is introduced. The table is validated for reliable and sequential delivery of packets.

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