[cisco-voip] Head-end VPN Failover for VoIP

[Manoj Kalpage]

Dear All,
Does anyone know whether I can find step by step sample configuration for
Head-end VPN Failover for VoIP?

I found two methods for Cisco IOS VPN as bellow. Does both supports for
Head-end VPN Failover?
DMVPN using GRE over IPSEC
GRE over IPSec with EIGRP

If So, can I use either of combination bellow
DMVPN using GRE over IPSEC + Head-end VPN Failover
GRE over IPSec with EIGRP + Head-end VPN Failover

I have been researching this for couple of week but still I did not find the
much information. I would greatly appreciate  your  kind reply.

Best Regards,
Manoj
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