What are the metrics used in EIGRP?

What are the metrics used in EIGRP?

EIGRP updates contain five metrics: minimum bandwidth, delay, load, reliability, and maximum transmission unit (MTU). Of these five metrics, by default, only minimum bandwidth and delay are used to compute best path.

What is EIGRP default metric?

The default metric (weights) is a catch all – meaning the value you specify here is the default for the entire eigrp routing process. Ospf routes redistributed into eigrp specified with a specific metric will inherit those values upon redistribution.

How EIGRP metric is calculated?

EIGRP uses these scaled values to determine the total metric to the network: metric = [K1 * bandwidth + (K2 * bandwidth) / (256 – load) + K3 * delay] * [K5 / (reliability + K4)]

What are the six factors used by EIGRP to calculate a route metric?

EIGRP determines the value of the path using five metrics: bandwidth, load, delay, reliability and MTU. EIGRP uses Five different messages to communicate with its neighbor routers. EIGRP messages are Hello, Update, Query, Reply, and Acknowledgement.

Does EIGRP use cost?

EIGRP Default Metric Despite how flexible the cost calculation is, most implementations of EIGRP just rely on the default K-values for their metric. The default K-values consider only Bandwidth and Delay, and ignore Load and Reliability.

What is EIGRP K?

K values are integers from 0 to 128; these integers, in conjunction with variables like bandwidth and delay, are used to calculate the overall EIGRP composite cost metric.

Is OSPF better than EIGRP?

Scalability of the OSPF is higher than EIGRP because EIGRP is complicated and vendor-specific and incapable of migrating from one vendor to the other. Conversely, OSPF is an open standard and simple protocol through which the network can be scaled easily.

What is K value in EIGRP?

How is EIGRP cost calculated?

It is calculated by adding the advertised/reported distance advertised by the neighbor and the cost calculated by that current router to reach the neighbor. successor: It is the (lowest) best path to reach to any specific destination network. These are stored in routing table.

How is minimum bandwidth determined in EIGRP metrics?

Unlike most metrics, minimum bandwidth is set to the minimum bandwidth of the entire path, and it does not reflect how many hops or low bandwidth links are in the path. Delay is a cumulative value which increases by the delay value of each segment in the path.

When to use ad instead of metric in EIGRP?

EIGRP uses the AD of 170 for redistributed routes so the AD of the routes will come into play before the metrics have a chance to make a difference. AD will take precedence over the metric. In all reality you could set all of the values to 1 and your redistributed routes would still function as normal.

How are EIGRP metrics used in OSPF routing?

When you translate an OSPF route into an EIGRP route, you have to translate the OSPF into EIGRP. OSPF uses a cost value as a metric. This cost is derived from the interface bandwidth by default. EIGRP uses a composite metric comprised of bandwidth, delay, reliability, and load.

Are there any Cisco routers that support EIGRP?

EIGRP is supported in Cisco IOS ® Software Release 9.21 and later. The information in this document is based on Cisco IOS Software Release 12.3 (3). EIGRP can be configured on all routers (such as the Cisco 2500 series and the Cisco 2600 series) and on all Layer 3 switches.