Advanced Redistribution
377
F I G U R E 1 0 . 7
Protocol-specific metrics
Route-Specific Metrics
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 5.0.0.0 as it is redistributed
from RIP in Network B into EIGRP in Network A.
First, we create an access list that permits only network 5.0.0.0. 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
5.0.0.0:
access-list 1 permit 5.0.0.0
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
Network B
RIP
router eigrp 10
network 1.0.0.0
redistribute rip metric 56 100 255 1 1500
!
router rip
network 8.0.0.0
redistribute eigrp 10 metric 3
Network A
EIGRP - Process ID 10
I can see
routes
from RouterC.
I can see routes
from both RouterA
and RouterC.
I can see
routes
from RouterA.
RouterC
RouterB
RouterA
8.8.8.0/24
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