2.5.c Classic metric vs Wide metric

notable differences:


EIGRP-IPv4 Protocol for AS(150)
    Metric weight K1=1, K2=0, K3=1, K4=0, K5=0
    NSF-aware route hold timer is 240
    Router-ID: 192.168.21.12
    Topology : 0 (base)
      Active Timer: 3 min
      Distance: internal 90 external 170
      Maximum path: 4
      Maximum hopcount 100
      Maximum metric variance 1

EIGRP-IPv4 VR(San_Francisco_Group) Address-Family Protocol for AS(150)
    Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0
    Metric rib-scale 128
    Metric version 64bit
    NSF-aware route hold timer is 240
    Router-ID: 192.168.21.12
    Topology : 0 (base)
      Active Timer: 3 min
      Distance: internal 90 external 170
      Maximum path: 4
      Maximum hopcount 100
      Maximum metric variance 1
      Total Prefix Count: 0
      Total Redist Count: 0

EIGRP-IPv4 VR(San_Francisco_Group) Address-Family Protocol for AS(150)

i find nothing that denotes VR specifically other than “virtual-instance-name”. my guess is VR means Virual Router.

Metric rib-scale 128

this is automatic once in named mode

With the calculation of larger bandwidths, EIGRP can no longer fit the computed metric into a 4-byte unsigned long value that is needed by the Cisco RIB. To set the RIB scaling factor for EIGRP, use the metric rib-scale command. When you configure the metric rib-scale command, all EIGRP routes in the RIB are cleared and replaced with the new metric values.

Metric version 64bit

again, automatic

By default, the EIGRP composite cost metric is a 32-bit quantity that is the sum of segment delays and the lowest segment bandwidth (scaled and inverted) for a given route. The formula used to scale and invert the bandwidth value is 107/minimum bandwidth in kilobits per second. However, with the EIGRP Wide Metrics feature, the EIGRP composite cost metric is scaled to include 64-bit metric calculations for EIGRP named mode configurations.

Metric weight K1=1, K2=0, K3=1, K4=0, K5=0 K6=0

addition of K6, automatic

Default K values are as follows:

K1 = K3 = 1

K2 = K4 = K5 = 0

K6 = 0

The EIGRP Wide Metrics feature also introduces K6 as an additional K value for future use.

Total Prefix Count: 0
Total Redist Count: 0

added Total Prefix Count

Shows to the aggregate sum of the prefixes in an EIGRP instance topology table. It includes prefixes learnt from all neighbors or from redistribution.