It is important to be well prepared for any job interview, and networking interviews are no exception. When interviewing for a networking role, it is important to have a good understanding of EIGRP and the associated technologies. In this blog post, we will look at some of the most common EIGRP interview questions and discuss the best ways to answer these questions. EIGRP is an advanced routing protocol that is often used in enterprise networks, and having a good understanding of this protocol will be important for any networking professional. We will also discuss some tips and tricks for preparing for a networking interview and provide guidance on how to respond to more difficult questions. By the end of this blog post, you will be well equipped to answer the most common EIGRP interview questions confidently.
- What is EIGRP? …
- What are the requirements for neighborship in EIGRP? …
- What is the metric of the EIGRP protocol & its default values? …
- Give the formula by which EIGRP calculates metric? …
- What are the four basic components of EIGRP? …
- What are the different packet types used by EIGRP?
EIGRP Interview Questions and Answers Part-1 || Interview Preparation
Introduction to EIGRP Interview Questions
The most recent distance-vector routing protocol, EIGRP, is used in computer networks to automate routing and configuration decisions. Cisco Systems created this protocol as a registered algorithm that is only compatible with Cisco routers. EIGRP is expanded as an Enhanced interior gateway routing protocol. To determine the shortest path, the algorithm is also known as a diffused update algorithm. Due to its similarities to distant vector and link-state routing protocols, it is also regarded as a hybrid routing protocol. EIGRP supports classless routing, route summarization, load balancing, and VLSM. We’ll learn about EIGRP Interview Questions in this section.
The following are a few of the most significant EIGRP interview questions that are frequently asked in an interview:
Part 1 – EIGRP Interview Questions(Basics)
This first part covers basic EIGRP Interview Questions and Answers
Answer:
A neighbor table, topology table, and route table are the three different tables used in EIGRP.
The neighbor table contains information about a neighbor relationship that is tracked using EIGRP routing and convergence activity. Every time a new neighbor is introduced, their interface and address are introduced and recorded as a new entry in the neighbor table. The table is examined for packet delivery that is dependable and sequential.
Topology table: This is a guide table for routers to use when routing traffic in a network. This routing table, which includes a router position, is available in the automatic system. Every router uses the routing protocol and maintains a topology table for each network protocol that is configured. Using the topology table as a guide, the routes lead to the destination port.
Route table: Routing tables contain the paths between a specific source and destination. The information is immediately placed around it in the network topology. Routing protocols’ primary objective is to build the routing table’s path. The routing table contains information such as network id, packet cost, packet path, and next-hop details.
Answer:
Hello packets, update packets, query packets, reply packets, and ack packets are among the various EIGRP packets that can be sent. Hello, packets maintain the EIGRP neighborship when its discovered. The specific router will be deemed dead if it doesn’t receive a hello packet in the anticipated amount of time. Updated packets are sent if any new neighbor packets are found, allowing the nearby router to update its topology table. Update packets are transmitted reliably in a single direction. The destination transmits query packets whenever it enters an active state. Responses are frequently sent to queries in multicast mode to indicate the originator does not need to enter an active state. A reply packet is sent if the destination enters an active state. Response packets are sent in a reliable, unicast fashion to the origin of the query. The act packets use to find the status of transmission. In the event that any hello packets sent without details are regarded as acknowledgments The unicast address sent by acks is the non-zero acknowledgment value.
Answer:
The primary subnet of the source and destination routers must match, and both should be set up to use the same k-values. With boundaries parallel to each other, the source and destination routers should have the same authentication configuration. They should not be passive.
Let us move to the next EIGRP Interview Questions.
Use of this command is required for quick determination and decreased troubleshooting time.
Answer:
It doesn’t support secondary addresses. Cisco advises configuring routers with the subnet of similar primary addresses because EIGRP always searches data packets from the primary address. Because routers don’t form eigrp neighbors over secondary networks. If any routers didn’t change to the primary IP addresses, problems with nearby neighbors may arise.
Answer:
It routes IPs, IPX, AppleTalk, and DECnet and has a sophisticated distance vector. It responds sporadically to changes in routing in metrics like bandwidth, reliability, load, hop count, maximum transmission unit size, and transmission delay. The hello timer runs on ethernet for one second and non-broadcast for sixty seconds.
EIGRP Interview Questions and Answers Vol 0
Check the below Description for EIGRP Interview Questions –
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What are the different tables in EIGRP? Question 1: What is EIGRP? Question 2: What are the requirements for neighborship in EIGRP? Question 3: Does EIGRP support secondary addresses? Question 4: What debugging capabilities does EIGRP have? Question 5: What are the different K-values used in EIGRP? Question 6: What are the benefits of EIGRP over other routing protocols? When configuring EIGRP, should I always use the log-neighbor-changes command? Question 21: Maximum path load balanced by EIGRP? Question 22: How does EIGRP support unequal load balancing? Question 23: How can I configure EIGRP? Question 17: What settings must match between two routers in order to become EIGRP neighbors? Question 18: What is meant by active and passive states in EIGRP? 254. 0. What does the error message “3 (Tunnel0) is down: holding time expired” mean? Question 66: Is there an IPv6 deployment guide that includes EIGRPv6? 262 Poison squashed: 10. X. X. I have two routes: 172 and X/24 reverse message, what does poison squashed mean? 16. 1. 0/24 and 172. 16. 1. 0/28. How can I deny 172. 16. 1. 0/28 while I allow 172. 16. 1. I have a router that utilizes Cisco Express Forwarding (CEF) and EIGRP. 0/24 in EIGRP? When there are multiple links to a destination, who handles load-balancing? Question 70: Is it normal for EIGRP to take more than 30 seconds to converge? Question 71: Can I configure more than one EIGRP autonomous system on the same router? Question 72: If there are two EIGRP processes running and two equal paths are learned, one by each EIGRP process, do both routes get installed?
FAQ
Which protocol is used by EIGRP?
EIGRP implements Cisco’s Reliable Transport Protocol (RTP) to ensure that EIGRP router updates are delivered to all neighbors completely since it does not use TCP for communication. Additional efficiency-enhancing and multicasting-supporting mechanisms are included in the reliable transport protocol. EIGRP uses 224. 0.
Does EIGRP use TCP or UDP?
EIGRP does not use TCP or UDP; instead, it operates directly over IP using IP protoco number 88.
Why EIGRP is faster than OSPF?
Because EIGRP networks can learn topology information and updates more quickly than OSPF networks, the network convergence time is quicker on these networks. EIGRP performs better than OSPF in terms of packet delay variation.
Why EIGRP is better than RIP?
In contrast to rip, which only uses hop counts for metric calculation and can therefore experience pinhole congestion, eigrp can use bandwidth, delay, reliability, load, and mtu for metric calculation, or you could say it uses composite metric.
