Exam 400-101 topic 2 question 580 discussion

Actual exam question from Cisco's 400-101

Question #: 580
Topic #: 2

interface ethernet 0/0
ip-policy route-map PBR
route-map PBR
match ip address 144
set ip next-hop 172.16.12.5
set ip next-hop recursive 192.168.3.2
Refer to the exhibit. Which statement describes how a router with this configuration treats packets if the devices at 172.16.12.5 and 192.168.3.2 are unreachable?

A. It routes the packet using the default routing table
B. It sends an ICMP source quench message.
C. It drops the packet immediately.
D. It routes the packet into a loop and drops it when the TTL reaches zero.

Show Suggested Answer

Suggested Answer: A 🗳️
The PBR Recursive Next Hop feature enhances routemaps to enable configuration of a recursive next-hop IP address that is used by policy-based routing (PBR).
The recursive next-hop IP address is installed in the routing table and can be a subnet that is not directly connected. If the recursive next-hop IP address is not available, packets are routed using a default route.
If both a next-hop and a recursive next-hop IP address are present in the same route-map entry, the next-hop is used. If the next-hop is not available, the recursive next-hop is used. If there cursive next-hop is not available and no other IP address is present, the packet is routed using the default routing table; it is not dropped.
References:

by kidschannel1988 at April 3, 2025, 9:20 p.m.

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