ALERT

[WEBINAR] Better to Ask Permission? Best Practices for Privacy and Security

Hop Count

Definition - What does Hop Count mean?

In networking, a hop count is the total number of intermediate devices such as routers through which a given piece of data must pass between the source and destination, instead of flowing directly over a single wire. Along the data path, each router forms a hop, with data moving from one source to another. The hop count is considered a basic measurement of the distance in a given network. In other words, it gives an approximate measure of the distance between two given hosts.

Techopedia explains Hop Count

A hop count of X equates to having X gateways between the source host and destination host. In a given a path, as each device capable of receiving the data packets receives the packets, the device not only modifies the packet but also increases the hop count by one. The device also compares the hop count against a defined time to live limit and eliminates the packet if the hop count is high. This helps packets in moving around the network, especially in the case of routing errors. In a network, each point-to-point link is technically a hop, and hop count pertains only to the number of network devices between the start and end nodes. Hop count only considers devices which perform routing. As a result, routers and firewalls which perform routing are all considered in hop counts. Repeaters, firewalls which are not routers, hubs and switches are not considered in hop counts, as they do not route.

A hop count is not helpful in obtaining the optimum network path, as it does not consider the load, speed, reliability or latency involved in the network. Certain routing protocols such as Routing Information Protocol consider hop count as the sole metric in their evaluation.

Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
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.