SonicOS 7 Rules and Policies

About Metrics

A metric is a weighted cost assigned to static and dynamic routes. Metrics determine the best route among several, usually the gateway with the lowest metric. This gateway is usually the default gateway.

Metrics have a value between 1 and 254; see Metric Value Descriptions. Lower metrics are considered better and take precedence over higher costs. SonicOS adheres to Cisco-defined metric values for directly connected interfaces, statically encoded routes, and all dynamic IP routing protocols.

Metric Value Descriptions
Metric Value Description
1 Static Route
5 EIGRP Summary
20 External BGP
90 EIGRP
100 IGRP
110 OSPF
115 IS-IS
120 RIP
140 EGP
170 External EIGRP
200 Internal BGP

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