Greetings,

Route metric is a variable  that a router uses to choose the best route to a 
destination. Depending on the routing protocol, the metric definition is 
different. What I'm trying to understand is how Linux defines the metric in the 
route output command.

For example when a Fedora laptop has two active interfaces, Ethernet and wifi, 
the metric in route output, is set to 1 for Ethernet and 2 for WiFi. Reading 
the man page on the route command, it says the metric is defined as hop counts 
to a destination. Based on the above observation,  this is incorrect or 
incomplete. It definitely include the hop count, but how fedora came up with 1 
and 2. Could it be just used these number arbitrarily to indicate to IP, that 
the Ethernet interface is the preferred path  to use to send traffic, because 
it's speed is faster and more reliable?

Basically what I'm looking for is the definition of the metric defintion in 
Linux or Fedora. And if someone shed light on the windows definition that would 
be great.

Rgrds,

Alex

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