Definition - What does Metric mean?

A metric is a variable among the critical attributes of the route of a packet within a computer network. It has an unsigned value, so it can never be negative. Metrics are calculated for multiple routes to determine the best route. The route having the best metrics is usually the easiest and fastest path for delivering the packet.

The method used to calculate a metric differs from one network protocol to another. For example, Enhanced Interior Gateway Routing Protocol (EIGRP) has a metric ranging between zero and 4,294,967,295.

This term is also known as a routing metric.

Techopedia explains Metric

Routing tables in routers contain only routes with the lowest metrics. There is another important network attribute called link-state, which is used together with the metric to make the final decision regarding the best path.

To calculate the route metric, many different network parameters are used, including:

  • Utilization per link.
  • Actual path speed/bandwidth.
  • Packet losses per link/path.
  • Overall delay of a packet.
  • Reliability of the path, calculated according to the history of outages.
  • Router throughput.
This definition was written in the context of Networking
Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.