ACL vs Prefix-list

While performing redistribution from RIP to OSPF, i was trying to set-up the
route-type for certain routes to E1 using a route-map.

First, i used an access-list inside the route-map to identify those routes.
Although the ACL was filtering routes, the 'set' action was not being
performed by the route-map.

The problem was resolved after replacing the ACL with a prefix-list.

Is there a ready explanation for this observation ... ??

*ACL*

ip access-list standard summary
 permit 30.0.0.0 0.252.255.255
 permit 31.0.0.0 0.252.255.255
*Prefix-List*

ip prefix-list summary seq 5 permit 30.0.0.0/8 ge 14
ip prefix-list summary seq 10 permit 31.0.0.0/8 ge 14
*Route-map with ACL*

route-map assign-metrics permit 10
match ip address summary
set metric-type type-1
!
route-map assign-metrics permit 20
*Route-map with Prefix-list*

route-map assign-metrics permit 10
 match ip address prefix-list summary
 set metric-type type-1
!
route-map assign-metrics permit 20

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Received on Thu Sep 08 2011 - 11:26:35 ART