02-09-2022 11:28 AM
We have a DMVPN hub that has many remotes. EIGRP HELLOs are coming in from the remotes and when debugging EIGRP packets on the hub, we see it sending HELLOs out the tunnel interface. But a check of a remote indicates those HELLOs are not getting to the remote site. We have tried removing and reconfiguring the tunnel and removing the eigrp address-family and re-applying with no change in the condition. I have also cleared ip nhrp with no improvement. for an nhrp entry, we can see the NHRP endpoint, and can ping it. However, multicast just not getting there.
02-09-2022 11:34 AM
Hello,
is the DMVPN operational at all, that is, does the data traffic flow work ?
Post the full running configs of the hub and one of the spokes.
02-09-2022 11:37 AM
02-09-2022 11:54 AM
unicast works? Do you have map multicast dynamic on the hub? Where is CEF pointing to get to the remote tunnel source?
Can you provide config snippets for the hub and a remote along with underlay routes for the tunnel sources?
02-09-2022 12:14 PM
Ipsec is timeout, need keepalive in hub to detect the alive of each spoke.
Check ipsec.
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