dmvpn tunnel connectivity issue

[yose]

looking for help on dmvpn tunnel connectivity issue

NBMA address of all spoke are pinged   smoothly without any drop 

tunnel is established correctly with all spokes 

however   there is a drop on traffic passing though tunnel ??? 

[Gopinath_Pigili · Accepted solution]

Please go through the link....it might helpful....

https://community.cisco.com/t5/vpn/packet-loss-via-dmvpn-tunnel-but-not-across-wan/td-p/1683925

Best regards
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[MHM Cisco World]

this can happened from 
1- MTU mismatch 
2- ISP issue  

[yose]

the DMVPN connectivity issue is started while ISP upgrades the speed from 200mg to 500 mg ..  so if the cause is from ISP how can resolve the problem ?

[MHM Cisco World]

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@yose wrote:

the DMVPN connectivity issue is started while ISP upgrades the speed from 200mg to 500 mg ..  so if the cause is from ISP how can resolve the problem ?

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Unfortunately I dont have answer' you need to contact ISP and describe issue and when it start.

MHM