Re: [Lcdp-ccna] Static route challenge

[Grant T. <gr...@te...>]

On Tue, Jun 10, 2003 at 11:00:37AM +0900, lance wrote:
> Was just doing the static route interactive challenge in 12.5.1 from the
> cisco online material.
> Any one know why we sett a static route between router Lab_A and Lab_D
> when they are not 
> Directly connected. I thought that was the point of a static route. It
> appears that Lab_B is the forwarding
> Router but there is no mention of lab_C which is on the route to Lab_D
> after Lab_B.
>  
> What am I missing here?

Actually, I think you've got it backwards. You only need a static route
for a network that's not directly connected.

A router already knows how to get to a directly connected network, just
put it out the interface with the IP address in that network.

You need a static route to tell it how to get to a non-directly
connected network.

A static route is not the whole path to the destination network, it's
just the next hop.

So to get from A to D, you have to go through B and C. But all the
router needs to know is the next hop, that is, Lab_B.

It's up to Lab_B to know how to get to D (through C).

In a dumb network, B wouldn't know how to get to D without another
static route to D through C. However, this is where routing protocols
come in, to automate all this.

> It seems funny to set a static route without specifying the whole
> path.

Only because it's still new. :)

-- 
Grant Tester
+61 413 987 988