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Exam 300-410 topic 1 question 113 discussion

Actual exam question from Cisco's 300-410
Question #: 113
Topic #: 1
[All 300-410 Questions]


Refer to the exhibit. Which interface configuration must be configured on the HUB router to enable MVPN with mGRE mode?

  • A. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.1.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 172.17.0.1 ip nhrp map 10.0.0.11 172.17.0.2 ip nhrp map 10.0.0.12 172.17.0.3 tunnel mode gre
  • B. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel mode gre multipoint
  • C. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp network-id 1 tunnel source 172.17.0.1 tunnel mode gre multipoint
  • D. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel destination 172.17.0.2 tunnel mode gre multipoint
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Suggested Answer: C 🗳️
by DaanB at April 1, 2021, 5:39 p.m.

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DaanB
Highly Voted 4 years, 3 months ago
Tunnel source IP can NOT be the IP address of the tunnel interface. The tunnel source IP should be, in this case, the IP address of the WAN interface.
upvoted 16 times
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wts
Highly Voted 3 years, 5 months ago
A - invalid tunnel ip-address. B - invalid tunnel source ip-address. C - multicast not enabled. D - invalid tunnel source ip-address. Apparently, everyone is choosing between the wrong ip-address and the missing multicast enable command.
upvoted 8 times
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AonDuine
Most Recent 10 months ago
Selected Answer: C
Cis correct
upvoted 1 times
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bf10690
11 months ago
Selected Answer: C
The tunnel source can not be the tunnel itself. It has to be something else, such as a physical interface or the IP of a different interface. The protocol in this case should also be gre multipoint since we are dealing with a DMVPN. The correct answer is C.
upvoted 3 times
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26307ae
11 months, 2 weeks ago
Selected Answer: C
The source tunnel interface can't be the Tunnel address itself
upvoted 1 times
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[Removed]
11 months, 3 weeks ago
Selected Answer: C
C is correct
upvoted 1 times
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Brand
1 year, 10 months ago
A. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.1.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 172.17.0.1 ip nhrp map 10.0.0.11 172.17.0.2 ip nhrp map 10.0.0.12 172.17.0.3 tunnel mode gre B. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel mode gre multipoint C. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp network-id 1 tunnel source 172.17.0.1 tunnel mode gre multipoint D. interface Tunnel0 description mGRE - DMVPN Tunnel ip address 10.0.0.1 255.255.255.0 ip nhrp map multicast dynamic ip nhrp network-id 1 tunnel source 10.0.0.1 tunnel destination 172.17.0.2 tunnel mode gre multipoint
upvoted 4 times
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Chiaretta
1 year, 11 months ago
Selected Answer: C
C is correct
upvoted 1 times
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forccnp
2 years, 4 months ago
Selected Answer: C
C is the correct answer
upvoted 2 times
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Koume
2 years, 5 months ago
Selected Answer: C
Even is missing ip nhrp multicast dynamic. Seems the most correct as all command are valir for HUB
upvoted 3 times
Pietjeplukgeluk
1 year, 7 months ago
I agree, it C should have "ip nhrp map multicast dynamic" added to be fully correct. Anyway it seems better than B as that has the wrong source ip specified.
upvoted 2 times
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ChillingAgain
2 years, 7 months ago
Selected Answer: C
C is correct
upvoted 1 times
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JOKERR
3 years, 1 month ago
Selected Answer: C
C is correct.
upvoted 2 times
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Hack4
3 years, 4 months ago
C is correct
upvoted 1 times
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Budh
3 years, 4 months ago
Selected Answer: C
C is correct
upvoted 1 times
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tyh391
3 years, 4 months ago
Selected Answer: C
As in Discussion
upvoted 1 times
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[Removed]
3 years, 4 months ago
Selected Answer: C
Answer is C. The question specifies how to enable MGRE Mode. Now your tunnel source cannot be a tunnel IP. It can either be a physical interface or a physical interface IP
upvoted 2 times
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Carl1999
3 years, 4 months ago
Selected Answer: C
C is correct not B. ip address 10.0.0.1 255.255.255.0 ->tunnel ip address tunnel source 172.17.0.1 ->physical ip address
upvoted 3 times
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