EIGRP K values

Daniel333Daniel333 Member Posts: 2,077 ■■■■■■□□□□
Alright, so every resource I am working with essentially tells me that the K values exist and then tell me never to change them. And generally provide little more detail than that.

I get the feeling the exam won't treat it that way. Any recommendations on additional reading on the K values? Like how they force updates, when they force them and how to tune them? I feel like I might be better off finding some CCIE training on the subject to get the detail I need.

Any ideas?
-Daniel

Comments

  • btowntechbtowntech Member Posts: 198
    K Values - K1, K2, K3, K4, K5 = Constants

    * K1 - Bandwidth
    * K2 - Load
    * K3 - Delay
    * K4 - Reliability
    * K5 - MTU

    K1 = K3 = 1
    K2 = K4 = K5 = 0

    The default for the K value is set so that only the bandwidth and the delay of the interface are used to calculate the EIGRP metric. The K values must be the same for all the routers, or EIGRP won't establish a neighbor relationship.
    BS - Information Technology; AAS - Electro-Mechanical Engineering
  • Daniel333Daniel333 Member Posts: 2,077 ■■■■■■□□□□
    So say I turn on reliability/load on the line. What defines reliability/load? and how is it calculated? How does it recalculate? everytime a new neighbor is established? A link dies? Every 30 seconds?

    I am completely lost on that.
    -Daniel
  • kalebkspkalebksp Member Posts: 1,033 ■■■■■□□□□□
    This doesn't answer that question but ipexpert has a good post on what the K values actually are (most people misunderstand them): EIGRP Metric & K-Values – CCIE Blog
  • DevilWAHDevilWAH Member Posts: 2,997 ■■■■■■■■□□
    the bcsi cbt nuggect brielf shows how to change K valuess and discusses them
    • If you can't explain it simply, you don't understand it well enough. Albert Einstein
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  • billscott92787billscott92787 Member Posts: 933
    Train Signal BSCI videos also explain what they are and how to change them. I have never heard "NOT" to change them. When I watched the BSCI videos by Chris Bryant CCIE # 12933 the only thing he said was most of the time you should have a "good" reason for changing them.
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