Top 76 EIGRP Interview Questions [UPDATED 2020]

by | Jan 24, 2018 | Free Resources

Question 1: What is EIGRP?
Question 2: What are the requirements for neighborship in EIGRP?
Question 3: What are the different tables in EIGRP?
Question 4: Does EIGRP support secondary addresses?
Question 5: What debugging capabilities does EIGRP have?
Question 6: What are the different K-values used in EIGRP?
Question 7: What are the advantages of EIGRP other routing protocol?
Question 8: What are the different types of EIGRP Packets?
Question 9: Is it is necessary to have the same AS on routers participating in EIGRP?
Question 10: What is the maximum Hop-count for EIGRP?
Question 11: Does EIGRP support aggregation and variable length subnet masks?
Question 12: Does EIGRP support areas?
Question 13: What is feasible successor?
Question 14: What is “graceful shutdown”?
Question 15: What are the different packets in EIGRP?
Question 16: Conditions for EIGRP neighbors.
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?
Question 19: Does EIGRP require an ip default-network command to propagate a default route?
Question 20: Should I always use the EIGRP log-neighbor-changes command when I configure EIGRP?
Question 21: Maximum path load balanced by EIGRP?
Question 22: How EIGRP support unequal load balancing?
Question 23: How can I use only one path when a router has two equal cost paths?
Question 24: What is the difference in metric calculation between EIGRP and IGRP?
Question 25: What is the EIGRP Stub Routing feature?
Question 26: Explain Split Horizon?
Question 27: Explain Null Zero?
Question 28: What is Active State and Passive State?
Question 29: How to turn on classless routing in EIGRP?
Question 30: What are the metric of EIGRP protocol & its default values?
Question 31: Give the formula by which EIGRP calculates metric?
Question 32: What is advertised distance?
Question 33: What is successor?
Question 34: What does the word serno mean on the end of an EIGRP topology entry when you issue the show ip EIGRP topology command?
Question 35: What percent of bandwidth and processor resources does EIGRP use?
Question 36: Explain Stuck in Active?
Question 37: How Passive Interface command works in EIGRP?
Question 38: How can I send a default route to the Stub router from the hub?
Question 39: What are different route types in EIGRP?
Question 40: How do you redistribute an IPv6 default route in EIGRP?
Question 41: How does EIGRP behave over a GRE tunnel compared to a directly connected network?
Question 42: What happen when we enable passive interface in EIGRP?
Question 43: What is “goodbye” message received in EIGRP?
Question 44: Why variance command is used in EIGRP?
Question 45: What are the Hello, Hold timers in EIGRP for Normal and WAN Routes?
Question 46: Which algorithm EIGRP use for finding best path?
Question 47: What are the four basic components of EIGRP?
Question 48: What are the primary functions of the PDM?
Question 49: What are the various load-balancing options available in EIGRP?
Question 50: What is EIGRP summary route and EIGRP external route?
Question 51: What is an offset-list, and how is it useful?
Question 52: How can I tag external routes in EIGRP?
Question 53: Why are routes received from one neighbor on a point-to-multipoint interface that runs EIGRP not propagated to another neighbor on the same point-to-multipoint interface?
Question 54: When I configure EIGRP, how can I configure a network statement with a mask?
Question 55: What packets are RTP enabled?
Question 56: Explain what will happen if the packet is not acknowledged?
Question 57: Explain the role of EIGRP Router ID?
Question 58: Explain Unequal Cost Load Balancing in EIGRP?
Question 59: For EIGRP neighbor-ship, what are requirements?
Question 60: How can we change Hello and Hold time in EIGRP?
Question 61: What is the Feasibility Condition in EIGRP?
Question 62: What is the Multicast IP address used by EIGRP?
Question 63: Which commands are used for implementing EIGRP on Cisco Router?
Question 64: What is Active-State & Passive State in EIGRP?
Question 65: What does the %DUAL-5-NBRCHANGE: IP-EIGRP (0) 100: Neighbor (Tunnel0) is down: holding time expired error message mean?
Question 66: Is there an IPv6 deployment guide that includes EIGRPv6?
Question 67: From the 16:29:14.262 Poison squashed: 10.X.X.X/24 reverse message, what does poison squashed mean? Question 68: I have two routes: and How can I deny while I allow in EIGRP?
Question 69: I have a router that runs Cisco Express Forwarding (CEF) and EIGRP. Who does load-balancing when there are multiple links to a destination?
Question 70: Is it normal that EIGRP takes over 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 that run and two equal paths are learned, one by each EIGRP process, do both routes get installed?
Question 73: What does the neighbor statement in the EIGRP configuration section do?
Question 74: Why does the EIGRP passive-interface command remove all neighbors for an interface?
Question 75: What is Reliable Transport Protocol?
Question 76: How do you verify if the EIGRP Non Stop Forwarding (NSF) feature is enabled?


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