THE SCHOOL OF CISCO NETWORKING (SCN): CISCO - EIGRP QUICK REFERENCE:
Contact No:   ### / ###/ ###
Welcome To The IT Knowledge Base Sharing Freeway "Study With The Zero Fees / Zero Money" Web - If We Believe, That If We Have Knowledge, Let Others Light Their Candles With It. - Our Motivation Has Brought Us Together To Offer Our Helping Hands To The Needy Ones Please. "Student Expectations And Satisfaction Is Always Our Highest Priority")
†
'Love All, Serve All, Help Ever Hurt Never'

Please Welcome To The "Zero Fees And Zero Money SCN Community Study Page"

We Like To Share Our Stuff With Everyone And Hope You Will Find Something Useful Here. Enjoy Our Collection And Come Back Again And Again, We'll Do Our Best To Make It Always Interesting For You. All Our Stuff Always Available May Be 100% Totally Freely. Use Only For Non-Commercial Purposes Only!

THE SCHOOL OF CISCO NETWORKING (SCN) Is A IT Support Community – Based, Non - Profit Volunteer Organizations, Offering Our Assistance And Support To Developmental Our Services Dedicated To All.

Because Large Section Of Our Students In This World, Especially In Villages, Who Are Under Privileged Expecting For Equal Opportunity In Terms Of Money And Education. We Feel The Sufferings Of Talented Students Losing Their Opportunity To Shine Because Of Their Poor Financial Status. So We Thought That Professional Education Will Be Providing Them Freely.

Our Web Site Is To Give An Easy Way To Understand Each And Every Student Who Are Going To Start CISCO Lab Practice Without Any Doubts And Our ARTICLES STUFF Are Always 100% Totally Free For Everyone, Which Is Belongings To THE SCHOOL OF CISCO NETWORKING (SCN).

Also This Guide Provides Technical Guidance Intended To Help All Network Students, Network Administrators And Security Officers Improve Of Their Demonstrated Ability To Achieve Specific objectives Within Set Timeframes.

Hands - On Experience Is An Invaluable Part Of Preparing For The Lab Exam And Never Pass Up An Opportunity To Configure Or Troubleshoot A Router ( If You Have Access To Lab Facilities, Take Full Advantage Of Them) There Is No Replacement For The Experience You Can Gain From Working In A Lab, Where You Can Configure Whatever You Want To Configure And Introduce Whatever Problems You Want To Introduce, Without Risk Of Disrupting A Production Network.

For Better View Of Our Web Page - Please Use Any Latest Web Browser, Such As (Mozilla Firefox, Google Chrome, Opera, Safari, Internet Explorer, Torch, Maxthon, Sea Monkey, Avant Browser, Deepnet Explorer, And Etc ), Because Some Elements Or Scripts Are Not Work In The Old Web Browser (It Might Not Be Displayed Properly Or Are Not Appearing properly!). Thank You For Your Time And Best Of Luck!

Your Sincerely – Premakumar Thevathasan.
∀
"Our Motivation Has Brought Us Together To Offer Our Helping Hands To The Needy Once Please,Thank You."

CISCO - EIGRP QUICK REFERENCE:

CISCO - EIGRP QUICK REFERENCE
► CISCO PROPRIETARY PROTOCOL

► ADVANCED DISTANCE VECTOR

► AUTOMATIC SUMMARIZATION AT CLASSFUL BOUNDARY (CAN BE DISABLED/TURNED OFF)

    
  • SUPPORTS VLSM/CIDR

        
  • MANUALLY SUMMARIZED ROUTES HAVE AD OF 5, POINT TO NULL0

        
  • MORE SPECIFIC ROUTES WITHIN SUMMARIZED RANGE MUST EXIST IN ROUTING TABLE, OR SUMMARIZED ROUTE DISAPPEARS

    ► MULTICAST ADDRESS 224.0.0.10

        
  • UNICAST AND MULTICAST ARE USED FOR UPDATES

    ► IP/IPX/APPLETALK ROUTED PROTOCOL SUPPORT

    ► NO SPECIAL CONFIGURATION REQUIRED FOR VARIOUS LAYER 2 TECHNOLOGIES

    ► UNEQUAL COST LOAD BALANCING

    ► SUCCESSOR - BEST PATH TO A DESTINATION

    ► FEASIBLE SUCESSOR - SECOND BEST PATH TO A DESTINATION

        
  • ADVERTISED DISTANCE - COST FROM NEXT HOP TO FINAL DESTINATION
        
  • FEASIBLE DISTANCE - COST FROM LOCAL ROUTER TO FINAL DESTINATION
        
  • FOR FEASIBLE SUCCESSOR TO BE USED, AD MUST BE LESS THAN THE FD THROUGH SUCCESSOR

    ► HELLO PACKETS ARE SENT EVERY 5 SECONDS ON LINKS GREATER THAN T1

        
  • SENT EVERY 60 SECONDS FOR T1 AND SLOWER
        
  • HOLD TIME INTERVAL DEFAULTS TO 3 TIMES THE HELLO INTERVAL
        
  • CHANGING DEFAULT HELLO INTERVAL DOES NOT AUTOMATICALLY UPDATE THE HOLD TIME
        
  • IP HELLO-INTERVAL EIGRP {AS} {SECONDS} INTERFACE COMMAND
        
  • IP HOLD-TIME EIGRP {AS} {SECONDS} INTERFACE COMMAND

    ► UN-ACKNOWLEDGED MULTICAST UPDATES ARE UNICAST TO THE HOST THAT DID NOT ACK. THIS AVOIDS HOLD UPS WITH FURTHER UPDATES TO THE REST OF THE NETWORK

    ► EIGRP METRIC IS BASED ON LOAD, BANDWIDTH, DELAY, AND RELIABILITY.

        
  • CISCO RECOMMENDS LEAVING K VALUES AT DEFAULT

    ► CONFIGURATION OF EIGRP

        
  • ROUTER EIGRP {AS}

        
  • NETWORK {ADDRESS | WILDCARD MASK} (WILDCARD IS OPTIONAL)

        
  • NO AUTO-SUMMARY (TURNS OFF SUMMARIZATION AT CLASSFUL BOUNDARY)

        
  • REDISTRIBUTE STATIC (REDISTRIBUTES ANY STATIC ROUTES INTO THE PROTOCOL)

        
  • VARIANCE {#} (MODIFIES WHICH ROUTES WILL BE CONSIDERED FOR UNEQUAL COST LOAD BALANCING)

        
  • MAX-PATHS {#} (NUMBER OF PATHS TO BE USED FOR LOAD BALANCING. DEFAULT IS 4, MAX IS 16)

        
  • IP SUMMARY-ADDRESS EIGRP {AS} {ADDRESS | MASK} (INTERFACE CONFIGURATION COMMAND TO SUMMARIZE ROUTES AT A NON CLASSFUL BOUNDARY.)

        
  • EIGRP STUB RECEIVE-ONLY ( THIS CREATES A STUB IN EIGRP. THE “RECEIVE-ONLY OPTION” TELLS THE STUB ROUTER TO NOT SEND ANY ROUTES)

    ► EIGRP AUTHENTICATION

        
  • EIGRP SUPPORTS CLEARTEXT AND MD5 AUTHENTICATION. IT LOOKS LIKE WE’RE ONLY CONCERNED WITH MD5 FOR THE EXAMS (FOR OBVIOUS SECURITY REASONS)

        
  • IP AUTHENTICATION MODE EIGRP {AS} MD5 (INTERFACE CONFIG MODE)

        
  • IP AUTHENTICATION KEY-CHAIN EIGRP {AS} {NAME OF KEYCHAIN}

        
  • KEY CHAIN {NAME OF KEYCHAIN} (GLOBAL CONFIG MODE)

        ◙ KEY {KEY-ID} (THIS CAN BE BETWEEN 0-2147483647)
        ◙ KEY-STRING {KEY}

    ► AS OF IOS 12.3, EIGRP SENDS A GRACEFUL GOODBYE MESSAGE WHEN BRINGING THE PROCESS DOWN. GOODBYE MESSAGES ARE SENT INSIDE OF HELLO PACKETS

    ► HELPFUL COMMANDS

        ◙ SHOW IP EIGRP NEIGHBORS

        ◙ SHOW IP ROUTE

        ◙ SHOW IP ROUTE EIGRP

        ◙ SHOW IP PROTOCOLS – SHOWS ACTIVE ROUTING PROTOCOL INFO (DISPLAYS K VALUES)

        ◙ SHOW IP EIGRP INTERFACES

        ◙ SHOW IP EIGRP TOPLOGY – SUCCESSOR/FEASIBLE SUCCESSOR

        ◙ SHOW IP EIGRP TRAFFIC

        ◙ DEBUG EIGRP PACKETS

    ► KEY TECHNOLOGIES

        
  • DUAL FINITE STATE

        
  • RTP

        
  • NEIGHBOR DISCOVERY/RECOVERY

        
  • PROTOCOL DEPENDANT MODULES (IP, IPX, APPLETALK)

    †

    CONCLUSION:


    The Goal Of This Article Is To Give An Easy Way To Understand The “CISCO - EIGRP QUICK REFERENCE". Hope This Article Will Help Every Beginners Who Are Going To Start Cisco Lab Practice Without Any Doubts.

    Some Topics That You Might Want To Pursue On Your Own That We Did Not Cover In This Article Are Listed Here, Thank You And Best Of Luck.

    This Article Written Author By: Premakumar Thevathasan. CCNA, CCNP, CCIP, MCSE, MCSA, MCSA - MSG, CIW Security Analyst, CompTIA Certified A+.

    DISCLAIMER:


    This Document Carries No Explicit Or Implied Warranty. Nor Is There Any Guarantee That The Information Contained In This Document Is Accurate. Every Effort Has Been Made To Make All Articles As Complete And As Accurate As Possible.

    It Is Offered In The Hopes Of Helping Others, But You Use It At Your Own Risk. The Author Will Not Be Liable For Any Special, Incidental, Consequential Or Indirect Any Damages Due To Loss Of Data Or Any Other Reason That Occur As A Result Of Using This Document. But No Warranty Or Fitness Is Implied. The Information Provided Is On An "As Is" Basic. All Use Is Completely At Your Own Risk.

    For Home Page Of - > SCN InF4 TECH


    To Send Email




    Window Minimize OR Window Maximize

    • Date & Time: Labels:

    No comments:

    Post a Comment

    Subscribe to: Post Comments (Atom)