RouterA will detect packets sent from 172.16.223.82 and destined to the 10.17.88.0/24 network and then redirect them to the next-hop router at 192.168.1.1. Route maps are conditional statements that determine whether a packet is processed normally or modified. A route map can be divided into a series of sequences that are processed in sequential order. If a route matches all the match criteria in a sequence, the route is permitted or denied based on the permit or deny keywords in the route-map command and any set conditions are applied. If a route does not match all the match criteria in any sequence, the route is discarded.
In this scenario, the route-map map1 permit 10 command creates a route map named map1. The permit10 keywords indicate that any route satisfying all the match statements in route map sequence number 10 will be redistributed. In this sequence, there is only one match statement, match ip address 101, which indicates that packets that match the IP addresses in access list 101 will be processed by the route map.
The access-list 101 permit ip host 172.16.223.82 10.17.88.0 0.0.0.255 command creates access list 101, which specifies that IP packets sent from 172.16.223.82 and destined to the 10.17.88.0/24 network are processed by the route map. Packets have to match only one access-list statement in order to be processed by the route-map.