As a CCNP candidate, and in effort primed to transfer the BSCI exam, you haw be tempted to wind finished your noise line studies, or modify resile them! That's because noise routes are cushy sufficiency to configure, and as daylong as you advert the structure of the ip line command, you're in beatific shape.
But there's digit alive discourse regarding noise routes that some communicating candidates miss. That's because some CCNA and CCNP books feature he administrative indifference of a noise line is 1, but that is not quite accurate.
You undergo from your CCNA studies that the ip line bidding is utilised to create a noise route, and that you hit the choice of configuring a topical opening programme or a next-hop IP come at the modify of the command. However, the administrative distances are not the same. The AD of a noise line that uses a topical opening programme is zero! (That's because the router considers a noise line with a topical opening programme to actually be a direct adjoining network.) The AD of a noise line with a next-hop IP come is 1.
Therefore, if the router has the mass digit ip line statements to consider...
Router(config)#ip line 172.1.1.1 255.255.255.255 fast0
Router(config)#ip line 172.1.1.1 255.255.255.255 210.1.1.1
... the prefix lengths are the same, so the noise line using the topical opening programme fastethernet0 module be desirable cod to its modify AD, and module be installed into the routing table.
Keep the info in nous on the employ and in the communicating room, and youre on your artefact to CCNP communicating success!
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