EIGRP naturally ascertains the steering table measurement to pick the best way. Yet, it is vital that the organization manager sees how to compute EIGRP metric. The default recipe for the composite measurement is:
[k1 x Bandwidth + k3 x delay] x 256
Naturally K1 and K3 is equivalent to 1 so the equation become
[Transfer speed + Delay] x 256
In the wake of analyzing the transmission capacity and defer values for each of the active connection points of the course, the means to ascertain EIGRP metric are the accompanying:
Discover the connection with the slowest data transfer capacity and utilize that worth to ascertain transfer speed utilizing the recipe 10,000,000/data transmission.
Discover the postpone an incentive for all friendly connection points en route to the objective. Summarize the postpone upsides of all connection points and separation by 10.
The amount of transfer speed and defer metric produce 24-digit esteem, yet the EIGRP utilizes 32-cycle esteem; in this manner we increase the 24-bit esteem with 256 to get a 32-bit esteem.
Ascertaining EIGRP Metric
Here in this model, we will involve similar geography as utilized in before articles. This model shows how EIGRP decides the measurement showed in R1’s steering table for the 192.168.2.0/24 organization.
Data transfer capacity
We have prior talked about that EIGRP utilizes the slowest transmission capacity to compute the measurement. We can discover the slowest transfer speed by analyzing every connection point between the source and objective. Thus, in this model, the transmission capacity of the point of interaction between the source switch R2 and the objective organization 192.168.2.0/24 is delineated in figure-2.
The GigabitEthernet 0/1 point of interaction on R1 has a data transmission of 10000 kb/s. The GigabitEthernet 0/2 connection points on R3 has a transmission capacity of 1,000,000 kb/s. The data transfer capacity of the GigabitEthernet 0/1 point of interaction on R1 isn’t the default data transmission, since we have arranged the data transfer capacity of this point of interaction. Thus, the slowest transmission capacity is 10000 kb/s and this transfer speed is utilized in the estimation of the measurement.
The reference transfer speed of EIGRP is 10,000,000; the EIGRP separates this worth by the point of interaction data transmission esteem in kb/s. The higher transmission capacity gives lower metric worth and the lower transfer speed produces higher measurement esteem. Thus, 10,000,000 is partitioned by 10000 which brings about 1000. In the event that the outcome is certifiably not an entire number, then, at that point, the worth is adjusted down.
Delay
Similar active points of interaction are utilized to discover the defer esteem, as displayed in Figure 1. We realize that the EIGRP utilizes the amount of all delays along the way from the source to the objective. The GigabitEthernet interface on R1 has a defer worth of 10 usec. The GigabitEthernet 0/2 on R3 has a postpone worth of 100 usec. The amount of these deferrals is 110, which is isolated by 10 (110/10 = 11).
Work out EIGRP Metric
Presently we have determined qualities for data transfer capacity and deferral, so presently we can compute EIGRP metric. The straightforward equation for metric is [Bandwidth + Delay] x 256. To get the measurement esteem we put the determined upsides of transmission capacity and postponement in this recipe for instance [1000+11] x 256 = 258816. Presently we can check the determined measurement in the directing table for network 192.168.2.0/24. Figure 3 delineates the result of the “show ip course” order.
