No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


CLI-based Configuration Guide - IP Unicast Routing

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

Rate and give feedback:
Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Route Metric

Route Metric

A route metric specifies the cost of a route to a specified destination address. The following factors often affect the route metric:

  • Path length

    Path length is the most common factor that affects the route metric. Link-state routing protocols allow you to assign a link cost for each link to identify the path length of a link. In this case, the path length is the sum of the link costs of all the links that packets pass through. Distance-vector routing protocols use the hop count to identify the path length. The hop count is the number of devices that packets pass through from the source to the destination. For example, the hop count from a router to its directly connected network is 0, and the hop count from a router to a network that can be reached through just one other router is 1. Other lengths can be deduced in the same manner.

  • Network bandwidth

    Network bandwidth is the transmission capability of a link. For example, a 10-Gigabit link has a higher transmission capability than a 1-Gigabit link. Although bandwidth defines the maximum transmission rate of a link, routes over high-bandwidth links are not necessarily better than routes over low-bandwidth links. For example, when a high-bandwidth link is congested, forwarding packets over this link will require more time.

  • Load

    The load is the degree to which a network resource is busy. You can calculate the load by calculating the CPU usage and packets processed per second. Continually monitoring the CPU usage and packets processed per second helps you learn more about network usage.

  • Communication cost

    The communication cost is the operating cost of a route over a link. The communication cost is another important indicator, especially if you do not care about network performance but are concerned about the operating expenditure.

Updated: 2019-12-27

Document ID: EDOC1000174069

Views: 197971

Downloads: 354

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next