When the “deny” statement is used within a route map that is used for policy-based routing, how is the traffic that matches the deny route-map line treated?
A.
Traffic is routed to the null 0 interface of the router and discarded.
B.
Traffic is returned to the normal forwarding behavior of the router.
C.
An additional sequential route-map line is needed to divert the traffic to the router's normal forwarding behavior.
D.
An additional sequential route-map line is needed to policy route this traffic.
B is correct.
The reason for this is with Policy-based Routing (PBR), you create a route map and match on traffic specified by an ACL. Anything labeled PERMIT in the ACL will get matched on, and subject to the PBR policy. Anything labeled DENY will not be matched by the PBR policy, meaning that it will not be looked at with that specific PBR configuration, and be returned to the normal forwarding procedure.
El tráfico que coincide con una línea "deny" en un route-map de PBR se procesa según la tabla de enrutamiento normal del router, ignorando las políticas del route-map.
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