In policy-based routing, which action is taken for packets that do not match any of the route-map statements?

In policy-based routing, which action is taken for packets that do not match any of the route-map statements?
A . forwarded after the egress queue empties on the outbound interface
B . forwarded using the last statement in the route map
C . forwarded using the closest matching route-map statement
D . forwarded using destination-based routing

View Answer

Answer: D

Explanation: Each entry in a route map contains a combination of match and set statements. The match statements define the criteria for whether appropriate packets meet the particular policy (that is, the conditions to be met). The set clauses explain how the packets should be routed once they have met the match criteria.

You can mark the route-map statements as permit or deny. You can interpret the statements as follows:

• If the statement is marked as permit and the packets meet the match criteria, the set clause is applied. One of these actions involves choosing the next hop.

• If a statement is marked as deny, the packets that meet the match criteria are sent back through the normal forwarding channels, and destination-based routing is performed.

• If the statement is marked as permit and the packets do not match any route-map statements, the packets are sent back through the normal forwarding channels, and destination-based routing is performed.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/7-x/unicast/configuration/guide/l3_cli_nxos/l3pbr.pdf