routing table entries help?

Question

R* 0.0.0.0/0 [120/2] via 10.10.10.2, 00:00:04, Serial0/0/0
the line above is at the end of the routing table of a router.. what does it means?

Answer 1

It means that any address that isn't local (within the same subnet) will route through 10.10.10.2, which is the gateway...or it should be the gateway.



Edit: How can I tell you what command to type if I don't know what router you're using?

Answer 2

R - RIP (RIP routing algorithm is used)

R* - default route

this route is called as DEFAULT route.

it means if the router has no route in its routing algorithm for an ip address means, then those packets will be sent (packet forwarding) via S0/0/0 port of the router which(S0/0/0) is generally the default gateway of the router which connectes the router to ISP. that port's(s0/0/0) ip-address is 10.10.10.2

Answer 3

Basically that any unknown address (0.0.0.0) can be reached through the 10.10.10.2 address, which is probably the router internal address.