--> Always start checking spokes configuration before hub, because changes to hub will effect entire network.( All Spokes).
--> Try to check the connectivity between spokes and hub by pinging to NBMA IP address ( Public IP address) of the Hub.
--> Verify Following Things
i) On Spoke NHS IP address should be Private Tunnel IP address.
ii) On Spoke Check the static NHRP mapping pointing towards to HUB.
iii) Check the authentication.
iv) On Spokes Multicast IP address Should be NBMA IP address of Hub.
v) On Hub Multicast map dynamic command is required.
Verify DMVPN Status with following commands
i) show dmvpn
ii) show ip nhrp
iii) show ip nhrp nhs
iv) show ip nhrp multicast
--> Try to check the connectivity between spokes and hub by pinging to NBMA IP address ( Public IP address) of the Hub.
--> Verify Following Things
i) On Spoke NHS IP address should be Private Tunnel IP address.
ii) On Spoke Check the static NHRP mapping pointing towards to HUB.
iii) Check the authentication.
iv) On Spokes Multicast IP address Should be NBMA IP address of Hub.
v) On Hub Multicast map dynamic command is required.
Verify DMVPN Status with following commands
i) show dmvpn
ii) show ip nhrp
iii) show ip nhrp nhs
iv) show ip nhrp multicast
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