How does EIGRP calculate bandwidth?
How does EIGRP calculate bandwidth?
Bandwidth: The bandwidth value used in the EIGRP metric calculation is determined by dividing 10,000,000 by the bandwidth (in kbps) of the slowest link along the path to the destination network. Delay: Unlike bandwidth, which represents the “weakest link,” the delay value is cumulative.
What is metric value in EIGRP?
If you only use those two static values our EIGRP routers don’t have to do any recalculation unless an interface goes down or a router died. Since only K1 and K3 are enabled we can simplify the EIGRP formula: Metric = bandwidth (slowest link) + delay (sum of delays)
How do you calculate EIGRP metric and K values?
By default EIGRP does not use dynamic values in metric. This will disable two more components; load (K2) and reliability (K4). Now only two static values remain in formula. Metric = (BandwidthE + DelayE)*256.
Which bandwidth value is used when calculating the EIGRP metric of a route?
Which bandwidth value is used when calculating the EIGRP metric of a route? The bandwidth factor that is used to calculate the composite metric of the EIGRP is defined as the slowest bandwidth of all outgoing interfaces between the source and destination.
What is EIGRP protocol?
Enhanced Interior Gateway Routing Protocol (EIGRP) is a network protocol that enables routers to exchange information more efficiently than earlier network protocols, such as Interior Gateway Routing Protocol (IGRP) or Border Gateway Protocol (BGP).
What algorithm does EIGRP use?
Diffused Update Algorithm
EIGRP is an enhanced distance vector protocol, relying on the Diffused Update Algorithm (DUAL) to calculate the shortest path to a destination within a network.
What is the metric calculation?
What is a calculated metric? A calculated metric is used to perform some very basic calculations on existing metrics. For example, the addition of two or metrics, multiplication of two or more metrics or dividing a metric by a constant, etc.
What is EIGRP in networking?
What is reported distance in EIGRP?
Feasible distance (FD) – the metric of the best route to reach a network. That route will be listed in the routing table. Reported distance (RD) – the metric advertised by a neighboring router for a specific route. It other words, it is the metric of the route used by the neighboring router to reach the network.
What are three features of EIGRP?
The characteristics of EIGRP follow:
- Hybrid routing protocol (distance vector that has link-state protocol characteristics).
- Uses IP protocol 88.
- Classless protocol (supports VLSMs).
- Default composite metric uses bandwidth and delay.
- You can factor load and reliability into the metric.
Why is EIGRP used?
Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced distance-vector routing protocol that is used on a computer network for automating routing decisions and configuration. EIGRP is used on a router to share routes with other routers within the same autonomous system.
How to calculate EIGRP bandwidth and delay value?
EIGRP Metric Calculation. We can use the resulting Bandwidth Value and Delay Value from above in the simplified EIGRP composite metric formula we deduced earlier: 256 × ( Bandwidth Value + Delay Value ) 256 × ( 100 + 10 ) 256 × 110 = 28160.
How is the metric calculation done in EIGRP?
Metric calculation is a critical component for any routing protocol. EIGRP uses multiple factors to calculate the metric for a path. Metric calculation uses bandwidth and delay by default but can include interface load and reliability, too. The formula shown in Figure 2-6 illustrates the EIGRP classic metric formula.
What are the k values in Cisco EIGRP metric?
As such, Cisco elected to only consider Bandwidth and Delay, and to weigh them equally, in their default EIGRP metric calculation. The default K-Values are K1 and K3 set to one, and K2, K4, and K5 set to zero. We can plug the default K-values into the formula above to see how it can be simplified:
Which is the default administrative distance for EIGRP?
Run the show command “show ip route” from privileged mode to verify the metric value. Here the value 35840 indicates the EIGRP metric value to the Destination Network and 90 is the default Administrative Distance of EIGRP.