To get even greater control over how metrics are assigned, we can use access lists and route maps to set metrics for specific routes. As an example, let's examine how to set a specific metric for network 188.8.131.52 as it is redistributed from RIP in Network B into EIGRP in Network A.
First, we create an access list that permits only network 184.108.40.206. Since
we're not concerned with destination addresses, a standard IP access list (an access list numbered from 1 through 99) will be fine for our purposes. Fol- lowing is the syntax to create an access list that permits only network 220.127.116.11:
access-list 1 permit 18.104.22.168
Next, we need to create a route map. We will examine route maps in more
detail later in the chapter. However, for now we can think of a route map as an IF-THEN-ELSE statement. IF the advertised route is permitted by our