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I tried to configure a DMVPN between two routers (hub and spoke) on Cisco Packet Tracer 6.0.1, but it does not accept the commands, i.e., when I type tunnel mode gre multipoint, I get an error on multipoint as it does not exist as an option. Does the program support DMVPNs or should I try GNS3? Thank you in advance.

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2 Answers 2

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Packet Tracer is a tool for basic network simulation (actually specifically designed for CCNA preparation). And simulation is the key word in this sentence: It only simulates an IOS router, and it lacks a fairly broad set of features, including but not limited to:

  • Limited feature set regarding routing protocols (route summarization in OSPF, tweaking of some EIGRP settings such as hold time, partial support for frame relay...)
  • No NAT Exception on the simulated ASA
  • Missing many crypto features
  • No suppport for multipoint GRE tunnels
  • No support for DMVPN at all

After all, its for CCNA-level study. So the short answer is: No you cannot. You could use GNS3 or Cisco VIRL to experiment with that topic.

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Look at this little example:

conf t
int tunnel 0
tunnel source fa0/0
tunnel mode gre multipoint
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  • You should expand you answer. Why does this solve the problem since the last line is what the OP says is an invalid option?
    – Ron Maupin ♦
    Commented Dec 23, 2015 at 18:21
  • tunnel mode gre multipoint works only on tunnel interface, if you just type where you want this won't work.
    – ga88er
    Commented Dec 23, 2015 at 19:11
  • and use GNS3 it will be works 100%
    – ga88er
    Commented Dec 23, 2015 at 19:20
  • If you read the question, it says that multipoint is not an option. In any case, your answer is of low quality since you don't explain anything. You should edit it to include an explanation, and quote and provide links to your sources if you have some.
    – Ron Maupin ♦
    Commented Dec 23, 2015 at 19:21
  • You could improve your answer by editing it to add more details to make it more useful both for the original poster and future users. Typically short answers like this could provide reasoning why you believe this is the answer, more explanation about the concepts mentioned, references/links to supporting resources, or applicable examples.
    – YLearn
    Commented Jan 29, 2016 at 4:30

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