replacing a prefix-list with access-list

From: Ernesto Mazuelos (ernesto.mazuelos@gmail.com)
Date: Tue Feb 27 2007 - 02:22:02 ART


Hi,
I have found in cisco.com a way of replacing a prefix-list with access-list,
however I don't understand the way as it is applied.
particularly, because the destination of the access-list is
255.255.255.0 as a subnet mask?
    thanks to everybody

!
ip bgp-community new-format
!
!
ip prefix-list rr seq 10 permit 189.168.58.0/23
ip prefix-list rr seq 20 permit 189.168.60.0/23
access-list 100 permit ip host 189.168.56.0 host 255.255.254.0 <=====
don't understand
!
route-map tto permit 10
 match ip address 100
 set community 645:200
!
route-map tto permit 20
!



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