Exam 300-410 All QuestionsBrowse all questions from this exam
Question 276

An engineer must override the normal routing behavior of a router for Telnet traffic that is destined to 10.10.10.10 from 10.10.1.0/24 via a next hop of 10.4.4.4, which is directly connected to the router that is connected to the 10.1.1.0/24 subnet. Which configuration reroutes traffic according to this requirement?

    Correct Answer: B

    To override the normal routing behavior of a router for Telnet traffic, the configuration needs to permit TCP traffic from 10.10.1.0/24 to 10.10.10.10 on port 23 and then set the next hop to 10.4.4.4. The command sequence in option B correctly specifies the ACL to match the desired traffic and the route-map to set the next-hop for that traffic. The use of 'recursive' is not necessary here because the next-hop 10.4.4.4 is directly connected to the router, so option B is the correct configuration.

Discussion
VergilPOption: B

no need to config recursive ---- 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. --- https://www.cisco.com/en/US/docs/ios/iproute_pi/configuration/guide/iri_prb_rec_next_hop_external_docbase_0900e4b1810fe58b_4container_external_docbase_0900e4b181525fed.html

Pietjeplukgeluk

B = correct.. Fully agree, you do NOT need recursive option in this example. It clearly state "directly connected", it can just reach the next hop as it has an interface in the subnet where the next hop resides. Also "the Permit 20 does not harm in route map." however it is not required in this use case.

Patrick1234Option: D

I believe the 10.4.4.4 is not directly connected to this router, but is connected to a router behind 10.1.1.0/24 subnet. So recursive would be necessary. In that case I would go for answer D.

Pietjeplukgeluk

the question states "which is directly connected to the router", so i do not see any requirement for recursive lookups here...

HungarianDish

I try to picture the path, but it's still not clear whether the "next-hop 10.4.4.4" is directly connected to the router with PBR or not. Source: 10.10.1.0/24 || PBR || -> ??? -> next-hop 10.4.4.4 -> 10.1.1.0/24 -> destination: 10.10.10.10 B or D. Depends on the topology.

alex711Option: D

D is correct. route-map POLICY permit 20 is not used in PBR. If you do not match packets on a route-map during PBR, PBR does not take any action on that packet, and is routed normally per the routing table/FIB/etc.

HarwinderSekhonOption: B

There are 4 Devices 1. LAN PC 10.10.1.X/24 -- > Router directly connected to 10.10.1.X -->Router with IP 10.4.4.4 --> destination 10.10.10.10. Just understand there are 4 nodes. 1.Client 10.10.1.X/24 2. Router connected to 10.10.1.X 3 Router we choose as next hop (10.4.4.4) 4. Destination 10.10.10.10 You are configuring node 2 and choosing node 3 as next hop. No recursive needed. Permit 20 does not harm in route map.

[Removed]Option: D

D is the best answer. At first I thought it was C, but I went back to my notes, a PBR does NOT require a second statement for traffic that is supposed to follow the RIB programming. But Recursive keyword is required. Based on the wording of the problem it sounds like the router is not directly connected to 10.4.4.4. "...override the normal routing behavior of a router...via next hop of 10.4.4.4 which is directly connected to the router that is connected to the 10.1.1.0/24 subnet..."

6dd4aa0Option: B

B because it is directly connected, the option "recursive" does not need to be used.

TypovyOption: D

Next hop router is connected to 10.1.1.0/24 but there is no info if it is directly connected to router on which we are configuring PBR. Since last permit is not needed in PBR the answer should be D

GReddy2323

Why is permit 20 not needed in PBR?

Typovy

Ask cisco not me mate :D

Malasxd

read the question again mate. they explicity say 10.4.4.4 is directly connected.

JoeyT

wrong. ... directly connected to the router that is connected to 10.1.1.0/24... means NOT directly connected...

inteldarvidOption: C

team for me correct is "C", because the next hop (recursive) is remote and not connect directly and its necessary continue route map with seq "20", because block or deny rest traffic

AlmylleOption: D

For me D is the correct answer, because in this case u need the recursive command, the 10.4.4.4 is NOT directly connected to the router.

TitiniOption: B

No need of recursive option

Titini

Since it is not directly connected to this router C is the best option. We need also a permit 20 statement in the route map for the rest of the traffic. Sorry for the confusion.

CisconAWSGURUOption: B

Answer is B, Key work is "directly connected to the router"

XBfoundXOption: B

is B, we are in the router that have the lan interface 10.10.1.0/24 subnet configured. The rotuer may be have multiple next hops and we have also the p2p interface 10.4.4.x subnet and 10.4.4.4 is my next hop, recursive is not needed...

dapardoOption: B

Im going with B on this since the question states that its directly connected to the router that is connected to 10.1.1.0 24 network. D can be used, off course, but B is sufficient.

ChiarettaOption: D

D is the correct answer because the next-hop is not directly connected then "recursive" is necessary and "Policy 20" is not needed.

GramterreOption: B

Why are so many people voting D when then question clearly states "via a next hop of 10.4.4.4, which is DIRECTLY CONNECTED to the router" ?

Juraj22Option: C

draw a chema and you know that is not directly connected. Therefore must be recursive. co C or D, for me C is right, should be permit any at the end