■Task
Get the same output with below.
Don’t change configuration of RT2.
■Topology
■Pre-Config
■Answer
RT1:
conf t
!
router eigrp CCIE
address-family ipv4 unicast autonomous-system 100
metric rib-scale 200
!
end
■Verify
■Note
If you change rib-scale of RT1, you can get the requested output.
you can calculate metric of EIGRP named mode if you use formula with below.
[(K1 * Minimum Throughput + {K2 * Minimum Throughput} / 256 – Load + (K3 * Total Latency) + (K6*Extended Attributes)] * [K5 / (K4 + Reliability)]
K1=1,K2=0,K3=1,K4=0,K5=0,K6=0
∴
(K1 * Minimum Throughput) + (K3 * Total Latency)
Minimum Throughput = (10^7 * 65536 / Bw)
Total Latency
– Below 1 giga : (Delay * 65536) / 10^6
– Above 1 giga = (10^7 * 65536 / 10^6 ) / Bw
default value of rib-scale is 128.
However, bandwidth of RT2’s loopback 0 is configured 1k.
This value is very low, so don’t register it in RIB.
You have to calculate rib-scale from output for registering route in RIB.
655753216000 / x = 3278766080
x = 655753216000 / 3278766080
x = 200
■Reference
Command Reference : metric rib-scale
Configuration Guide : Wide Metric