• Source: Metrics (networking)

Routing metrics are configuration values used by a router to make routing decisions. A metric is typically one of many fields in a routing table. Router metrics help the router choose the best route among multiple feasible routes to a destination. The route will go in the direction of the gateway with the lowest metric.
A router metric is typically based on information such as path length, bandwidth, load, hop count, path cost, delay, maximum transmission unit (MTU), reliability and communications cost.




Examples


A metric can include:

measuring link utilization (using SNMP)
number of hops (hop count)
speed of the path
packet loss (router congestion/conditions)
network delay
path reliability
path bandwidth
throughput [SNMP - query routers]
load
maximum transmission unit (MTU)
administrator configured value
In EIGRP, metrics is represented by an integer from 0 to 4,294,967,295 (The size of a 32-bit integer). In Microsoft Windows XP routing it ranges from 1 to 9999.
A metric can be considered as:

additive - the total cost of a path is the sum of the costs of individual links along the path,
concave - the total cost of a path is the minimum of the costs of individual links along the path,
multiplicative - the total cost of a path is the product of the costs of individual links along the path.




Service level metrics


Router metrics are metrics used by a router to make routing decisions. It is typically one of many fields in a routing table.
Router metrics can contain any number of values that help the router determine the best route among multiple routes to a destination. A router metric is typically based on information like path length, bandwidth, load, hop count, path cost, delay, MTU, reliability and communications cost.




See also


Administrative distance, indicates the source of routing table entry and is used in preference to metrics for routing decisions




References






External links


Survey of routing metrics

Kata Kunci Pencarian:

• Perangkat keras jaringan
• X (media sosial)
• Apache Mesos
• Komputasi hijau
• Lila Tretikov
• Universitas Telkom
• Daftar merger dan akuisisi oleh Microsoft
• Metrics (networking)
• Metric
• Health Metrics Network
• Networking hardware
• Trust metric
• Metric system
• String metric
• Administrative distance
• Computer network
• Zabbix