RFC 7868, "Cisco's Enhanced Interior Gateway Routing Protocol (EIGRP)", May 2016

Errata ID: 5691
Status: Reported
Type: Technical
Publication Format(s) : TEXT
Reported By: Gabriel Torres
Date Reported: 2019-04-14

Section 5.6.1.1 says:

The calculated EIGRP bandwidth (BW) metric is then:

               256 * (10^7)/BW = 256 * {(10^7)/10,000}
                               = 256 * 1000
                               = 256,000

   And the calculated EIGRP delay metric is then:

            256 * sum of delay = 256 * 100 * 10 microseconds
                               = 25,600 (in tens of microseconds)

It should say:

The calculated EIGRP bandwidth (BW) metric is then:

               (10^7)/BW = {(10^7)/10,000}
                         = 1,000

   And the calculated EIGRP delay metric is then:

               sum of delay = 1 ms = 100 tens of microseconds

   Thus the composite metric is:

               256 * 1000 * 100 = 25,600,000

Notes:

The 256 should be multiplied by the sum of the bandwidth and the delay, and not multiplied by each individual parameter.

1 ms = 1,000 microseconds = 100 tens of microseconds

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