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IPT 132 - Implementing and Troubleshooting EIGRP
ENHANCED INTERIOR GATEWAY ROUTING PROTOCOL
22
Computer Networking
Graduate
05/05/2014

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Term
WHAT IS EIGRP?
Definition
Enhanced interior gateway routing protocol is an advanced distance vector routing protocol which scales well and provides extremely quick convergence times with minimal overhead.  very popular on Cisco devices.
Term
What is EIGRP and what does it support?
Definition
EIGRP IS A CLASSLESS routing protocol that supports VLSM (VARIBLE LENGTH SUBNET MASKS.)
Term
WHAT ARE SOME OF THE FEATURE OF EIGRP?
Definition
  1. RAPID CONVERGENCE
  2. REDUCED BANDWIDTH COVERAGE
  3. MULTI NETWORK LAYER SUPPORT
  4. CLASSESS ROUTING
  5. LESS OVERHEAD
  6. LOAD BALANCING
  7. EASY SUMMARIZATION
Term
WHAT ARE THE 2 PARAMETERS EIGRP USES?
Definition
  1. ADVERTISED DISTANCE: THE METRIC FOR A NEIGHBOR TO REACH A PARTICULAR DISTANCE.
  2. FEASIBLE DISTANCE: THE ADVERTISED DISTANCE FOR A PARTICULAR NETWORK LEARNED FROM AN EIGRP NEIGHBOR PLUS THE EIGRP METRIC TO REACH THAT NEIGHBOR.
Term
EIGRP USES WHAT TYPE OF TABLE AND FOR WHAT?
Definition

EACH ROUTER MATAINS A NEIGHBOR TABLE AND TOPOLOGY TABLE FOR EACH ROUTED PROTOCOL CONFIG.

 

THEN EIGRP CHOOSES THE BEST ROUTES TO A DESTINATION FROM THE TOPOLOGY TABLE AND PLACES THESE ROUTES IN THE ROUTING TABLE.

Term
EIGRP KEEPS A NEXT-BEST ALTERNATIVE PATH, CALLED A _______, FOR FAST CONVERGENCE.
Definition
FEASIBLE SUCCESSOR
Term
T/F: EIGRP SUPPORTS UNEQUAL-COST LOAD BALANCING.
Definition
TRUE
Term
EIGRP USES ___ AUTHENICATION FOR ROUTER AUTHENTICITY.
Definition
MD5
Term
TROUBLESHOOTING EIGRP REQUIRES RESOLVING WHAT ISSUES?
Definition
RESOLVING LINK, NEIGHBOR, REDISTRIBUTION, AND ROUTING ISSUES.
Term
HOW DOES EIGRP MINIMIZE THE BANDWIDTH REQUIREMENT FOR EIGRP PACKETS?
Definition
BY PROPAGATING ONLY ROUTING TABLE CHANGES AND HELLO PACKETS.
Term
WHAT COMMAND CORRECTLY SPECIFIES THAT NETWORK 10.0.0.0, WHICH IS A DIRECTLY CONNECTED ROUTER, SHOULD RUN EIGRP?
Definition
ROUTER(CONFIG-ROUTER)#NETWORK 10.0.0.0
Term
A COMMAND THAT DISPLAYS THE AMOUNT OF TIME SINCE THE ROUTER FIRST HEARD FROM AN EIGRP NEIGHBOR?
Definition
SHOW IP EIGRP NEIGHBORS
Term
A COMMAND THAT YOU MUST CONFIGURE FOR EIGRP TO ADVERTISE SUBNETS AT A CLASSFUL NETWORK BOUNDARY?
Definition
"NO AUTO-SUMMARY" COMMAND
Term
WHAT COMMAND DISPLAYS WHETHER ROUTE FILTERING HAS BEEN ENABLED?
Definition
SHOW IP PROTOCOLS
Term
WHAT DOES THE EIGRP MESSAGE "NEIGHBOR NOT ON COMMON SUBNET" MEAN?
Definition
THE TWO ADJACENT NEIGHBOR INTERFACES DO NOT HAVE ADDRESSES IN THE SAME IP SUBNET.
Term
WHAT COMMAND YOU USE TO CONFIGURE EIGRP?
Definition

ROUTERX(CONFIG)# ROUTER EIGRP AUTONOMOUS-SYSTEM

 

AND 

 

ROUTERX(CONFIG)# NETWORK NETWORK-NUMBER

Term
T/F: EIGRIP, BY DEFAULT, DOES NOT ADVERTISE SUBNETS AND, THEREFORE, CANNOT SUPPORT DISCONTIGUOUS NETWORKS.
Definition
TRUE
Term
WHAT EIGRP COMMAND DO YOU USE TO MAKE EIGRP SUPPORT DISCONTIGUOUS SUBNETS?
Definition
NO AUTO-SUMMARY COMMAND
Term

WHAT 3 COMMAND(S) DO YOU USE TO VERIFY EIGRP CONFIG?

Definition
  1. ROUTERX# SHOW IP ROUTE EIGRP
  2. ROUTERX# SHOW IP PROTOCOLS
  3. ROUTERX# SHOW IP EIGRP INTERFACES
Term
WHAT IS THE "SHOW IP EIGRP TOPOLOGY [ALL-LINKS]" COMMAND?
Definition
NOTE: WITHOUT [ALL-LINKS] PARAMETER, IT WILL SHOW BOTH SUCCESORS AND FEASABLE SUCCESSORS, BUT WITH THE [ALL-LINKS] PARAMETER, THIS WILL ALSO ADD THE INFEASIBLE SUCCESSORS TOO.
Term
COMMNAND TO VERIFY EIGRP CONFIG?
Definition

ROUTERX# SHOW IP EIGRP TRAFFIC

 

WHICH SHOWS THE # OF IP PACKETS SENT AND RECEIVED.

Term
COMMAND TO DEBUG EIGRP?
Definition

ROUTERX# DEBUG IP EIGRP 

 

THIS ANALYZE THE EIGRP PACKETS THAT AN INTERFACE SEND AND RECIEVES.  ONLY USE WHEN THE TRAFFIC IS LIGHT BECAUSE IT IS OUTPUT INTENSIVE.

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