EIGRP Interview Questions


  • What is EIGRP?
  • What are the different tables in EIGRP?
  • Why EIGRP is called hybrid protocol?
  • What are the different packets in EIGRP?
  • Conditions for EIGRP neighbors.?
  • What is meant by active and passive states in EIGRP ?
  • What are the different K-values used in EIGRP ?
  • Does EIGRP require an ip default-network command to propagate a default route?
  • Should I always use the eigrp log-neighbor-changes command when I configure EIGRP?
  • Does EIGRP support secondary addresses?
  • What debugging capabilities does EIGRP have?
  • What are the advantages of EIGRP other routing protocol ?
  • What is Advertised distance ?
  • What is successor ?
  • What is the muticast address used by EIGRP to send Hello packets ?
  • What is "Stuck in Active" ?
  • What types of Authentication is supported by EIGRP ?
  • What is the use of "variance" Command in EIGRP?
  • Internal and external Administrative distance in EIGRP ?
  • What is Feasible successor ?
  • What is "Graceful shutdown" ?
  • Maximum path load balanced by EIGRP ?
  • How EIGRP support unequal load balancing ?
  • What happen when we enable passive interface in EIGRP ?
  • 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 172.22.71.208/29, 2 successors, FD is 46163456
  • via 172.30.1.42 (46163456/45651456), Serial0.2, serno 7539273
  • via 172.30.2.49 (46163456/45651456), Serial2.6, serno 7539266
  • What percent of bandwidth and processor resources does EIGRP use?
  • Does EIGRP support aggregation and variable length subnet masks?
  • Can I configure more than one EIGRP autonomous system on the same router?
  • If there are two EIGRP processes that run and two equal paths are learned, one by each EIGRP process, do both routes get installed?
  • When I configure EIGRP, how can I configure a network statement with a mask?
  • What is "Goodbye" message recieved in EIGRP ?
  • Who does load-balancing when there are multiple links to a destination?
  • How can I use only one path when a router has two equal cost paths?
  • What is the difference in metric calculation between EIGRP and IGRP?
  • What is the EIGRP Stub Routing feature?
  • How can I send a default route to the Stub router from the hub?
  • What are different route types in EIGRP?
  • What is an offset-list, and how is it useful?
  • What does the neighbor statement in the EIGRP configuration section do?
  • Why does the EIGRP passive-interface command remove all neighbors for an interface?
  • 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?
  • What are the primary functions of the PDM?
  • What are the various load-balancing options available in EIGRP?
  • What does the %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor 10.254.0.3 (Tunnel0) is down: holding time expired error message mean?
  • From the 16:29:14.262 Poison squashed: 10.X.X.X/24 reverse message, what does poison squashed mean?


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