DMVPN Questions
Note: If you are not sure about DMVPN, please read our DMVPN tutorial first.
Question 1
Explanation
From the output we learn that the logical address 10.2.1.2 is mapped to the NBMA address 10.12.1.2. Type “dynamic” means NBMA address was obtained from NHRP Request packet. Type “static” means NBMA address is statically configured. The “authoritative” flag means that the NHRP information was obtained from the Next Hop Server (NHS).
Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_4/ip_addr/configuration/guide/hadnhrp.html
Question 2
Explanation
When DMVPN tunnels flap, check the neighborship between the routers as issues with neighborship formation between routers may cause the DMVPN tunnel to flap. In order to resolve this problem, make sure the neighborship between the routers is always up.
Question 3
Explanation
DMVPN is not a protocol, it is the combination of the following technologies:
+ Multipoint GRE (mGRE)
+ Next-Hop Resolution Protocol (NHRP)
+ Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP…) (optional)
+ Dynamic IPsec encryption (optional)
+ Cisco Express Forwarding (CEF)
For more information about DMVPN, please read our DMVPN tutorial.
Question 4
Explanation
To allow communication to multiple sites using only one tunnel interface, we need to configure that tunnel in “multipoint” mode. Otherwise we have to create many tunnel interfaces, each can only communicate to one site.
Question 5
Explanation
An mGRE tunnel inherits the concept of a classic GRE tunnel but an mGRE tunnel does not require a unique tunnel interface for each connection between Hub and spoke like traditional GRE. One mGRE can handle multiple GRE tunnels at the other ends. Unlike classic GRE tunnels, the tunnel destination for a mGRE tunnel does not have to be configured; and all tunnels on Spokes connecting to mGRE interface of the Hub can use the same subnet.
For more information about DMVPN, please read our DMVPN tutorial.
Question 6
Explanation
GRE tunnels are the first thing we have to configure to create a DMVPN network so we should start troubleshooting from there. NHRP can only work properly with operating GRE tunnels.
Question 7
Question 8
Explanation
The “show crypto isakmp sa” command displays all current Internet Key Exchange (IKE) security associations (SAs) at a peer.
QM_IDLE state means this tunnel is UP and the IKE SA key exchange was successful, but is idle and may be used for subsequent quick mode exchanges. It is in a quiescent state (QM) -> Answers A, C, D are incorrect so answer B is the only suitable answer left.
Question 9
Explanation
The DMVPN is comprised of IPsec/GRE tunnels that connect branch offices to the data center. DMVPN troubleshooting requires the network engineer to verify neighbor links, routing and VPN peer connectivity. The GRE protocol is required to support routing advertisements. The VPN peer connection is comprised of IKE and IPsec security association exchanges.
The command “show crypto ipsec sa” is used to verify IPsec connectivity between branch office and data center router. We can also use this command to display the statistics of an active tunnel on a DMVPN network.
Note:
+ The command “show crypto isakmp sa” is used on DMVPN to verify IKE connectivity status to branch offices. The normal IKE state = QM IDLE for branch routers and data center routers.
+ The command “show crypto engine connection active” displays the total encrypts and decrypts per SA.
Question 10
Question 11
Question 12
Explanation
Both DMVPN Phase 2 and phase 3 support spoke to spoke communications (spokes talk to each other directly). In this case there is only an option of phase 2 (not phase 3) so it is the only correct answer.
Question 13
Explanation
Some documents say RIPv2 also supports DMVPN but EIGPR, OSPF and BGP are the better choices so we should choose them.
Question 14
Explanation
DMVPN is not a protocol, it is the combination of the following technologies:
+ Multipoint GRE (mGRE)
+ Next-Hop Resolution Protocol (NHRP)
+ Dynamic Routing Protocol (EIGRP, RIP, OSPF, BGP…) (optional)
+ Dynamic IPsec encryption (optional)
+ Cisco Express Forwarding (CEF)
DMVPN combines multiple GRE (mGRE) Tunnels, IPSec encryption and NHRP (Next Hop Resolution Protocol) to perform its job and save the administrator the need to define multiple static crypto maps and dynamic discovery of tunnel endpoints.
Question 15
Hi guys. I really need this exam badly, can anyone send the latest dumps including the simulations please. Thank you in advance :*
{email not allowed}
Please send dumps to telgin1980 -at- gmail – dot – com
Please send dumps to mpl80766atgmaildotcom
Here are the dumps:
https://drive.google.com/drive/folders/0B21TuNHP-x2dc2U5MUlNOXFkd2c?usp=drive_web&ddrp=1
@Anonymous
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i have exam on feb 21 2017
really appreciate if you can confirm
thanks a lot for sharing the dumps. thank you sincerely.
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Everyone swears by the dumps, so I’d say they’re valid. That’s what I’m studying.
I just took test 24 March
Half of the questions are not in the dumps
Route test
I took the exam 30 march my score 770 more than 15 questions are not in the dumps
I was going through CCNP Route and Tshoot Book and i couldn’t find the configuration part. I just wanted to know if DMVPN, mGRE, IPSec is part of the exam? In exam syllabus it says, Describe only.
Dear Friend,
Anybody have latest questions of 300-101, I failed the test yesterday(7-Jul-17) and my ccnp expiry within 10 days,
Yesterday I scored only 700, all drag and drop questions are new also many new question , but lab is same
Would someone help me…..pls
my email id is “risaglobal at hotmail dot com”
Failed today with 760pts….although I cleared all my labs , loads of new questions ,don’t trust any dumps…study hard chaps….and loads of simlet ( IPV6 , ACL, NAT, NAT-PT ETC ETC )
ACL very important ( IPV6 and IPV4 both)
I was using my old 642-902 books :(, please get the new cert guide for CCNP route 300-101)
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i failed today. i got 780. The questions are just not in the books i used cisco 300-101. i don’t understand cisco
Juste fail today all new question but Sim is the same please can someone help with new question
@Lallas @Anonymous August 31st, 2017
Which questions and answers did you use for the exam. From this website?
I had the exam on 30/8/17 failed 700 points. I see many questions here on the website back, but it is certainly not complete.
Which two commands must you configure on a DMVPN hub to enable phase 3? (Choose two)
A. ip nhrp interest
B. ip nhrp redirect
D. ip network-id
E. ip nhrp map
F. ip redirects
in it’me v1.3 dump, the answer is BC, but somewhere is DE, which is correct ?
Hi guys, I have the valid dump with me and I’m wiling to share. Please contact me via durshen81 @ gmail .com
Scored 9xx, used dumps from IT-Libraries. You can find them on the net for free or in the comments here.
Passed, if you go the exam study the 440q dumps.
@R101
Im strugling with this question and its a words play.
Generaly
on hub you don’t need “ip nhrp shortcut” – it is needed on spokes to enable phase 3
hub also need np nhrp map ___dynamic____ and ip nhrp network-id but
assuming its already in place for phase 2.
What the hell the author had in mind ??? dunno
Hi friends, I’m having the valid dump with me and I’m wiling to share. Please contact me via durshen81 @ gmail .com
About Q11:
A. ip nhrp interest -> Specifies an IP access list that controls NHRP requests.
B. ip nhrp redirect -> in hub: tells the initiator spoke to look for a better path to the destination spoke than through the Hub
C. ip nhrp shortcut -> in spokes: overwrite the CEF table on the spoke.
D. ip network id -> nothing to do with NHRP… lacks of nhrp word.
E. ip nhrp map -> Used in DMVPN static mapping… so not a requirement for phase 3
F. ip redirects -> it seems that it has nothing to do with NHRP…
If D would be “ip nhrp network-id”, the answer should be B,D. But here, it seems that the only two that make some sense are B,C.
@conip is right about the wording… tricky.
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why is the member login button gone?
I can´t login as member ?
The exam have alot of new questions…. this site needs to be updated.
@anonymous did you passed exam ?
Which two phases of DMVPN allow the spoke site to create dynamic tunnels to one other? (Choose two)
A. Phase 1
B. Phase 2
C. Phase 3
D. Phase 4
E. Phase 5
what main phase 2& 3?
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Question 13
Which protocols support DMVPN?
A. EIGRP
B. RIPv2
C. OSPF
D. BGP
E. ISIS
Right answers are EIGRP, RIPv2 and BGP. OSPF is not totally compliant with DMVPN. One example is ip ospf network type point-to-point. Digitaltut please correct the answers
can someone provide 300-101 dump? looking to exam in a couple weeks
..Please!
Which two statements about NHRP in a DMVPN environment are true? (Choose two)
A. It requires each endpoint to have a unique network ID
B. It routes traffic through the tunnel
C. It can identify PIM-SM RPs over a tunnel
D. It can authenticate VPN endpoints
E. It provides address resolution to route traffic
DE or BE??
D,E
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Q13
Based on network lessons site DMVPN supports also RIPv2
@Dany1 Based on this https://www.cisco.com/c/en/us/products/collateral/security/dynamic-multipoint-vpn-dmvpn/data_sheet_c78-468520.html
Question 13
Which protocols support DMVPN?
A. EIGRP <–
B. RIPv2
C. OSPF <–
D. BGP <–
E. ISIS
Has anyone used this dump for the exam recently?
Which two statements about DMVPN are true? (Choose two)
A. IPsec encryption not supported with statically addressed spokes
B. It requires full-mesh connectivity on the network
C. It uses NHRP to create a mapping database of spoke addresses
D. Multicast traffic is not supported
E. It supports dynamic addresses for spokes in a hub-and-spoke VPN topology
Answer: C E ( Is A also correct?)
Hello everyone,
Are the dumps shared on this site valid as of today ?
Thanks
Bing