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https://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike-protocols/41940-dmvpn.html
Jan 04, 2006 · The DMVPN solution is based on GRE tunnels which support tunneling multicast/broadcast IP packets, so the DMVPN solution also supports dynamic routing protocols running over the IPsec+mGRE tunnels. Previously, NHRP required you to explicitly configure the broadcast/multicast mapping for the tunnel destination IP addresses to support GRE ...
https://learningnetwork.cisco.com/thread/113220
May 14, 2017 · DMVPN does not support broadcast or multicast since it is an NBMA medium. Multicast in DMVPN is similar to how it works in Frame-Relay. The device that needs to send multicast packets must pseudo-broadcast it in a unicast packet. The hub does not relay multicast messages from one spoke to another by default.
https://networkengineering.stackexchange.com/questions/44774/which-vpn-types-protocols-inherently-support-multicast-traffic
There's a relatively new thing called VTI(Virtual Tunnel Interfaces)'s, which are IPSec VPN tunnels that support multicast. It only supports IP traffic though, doesn't support NHRP so couldn't be used for DMVPN. Note about relatively new: at this point, most commercial vendors support …
https://autrunk.com/multicast-over-encrypted-dmvpn/
Lab Introduction This lab tests multicast over DMVPN. DMVPN Phase 3 is deployed with R01 as HUB and R02 and R03 as SPOKEs. Point-to-multipoint OSPF runs over DMVPN. WAN-facing physical interfaces are in global routing table; while tunnels and R04 interfaces are in GREEN_IVRF routing table. DMVPN tunnel is encrypted by IKEv2 with pre-shared key […]
https://carpe-dmvpn.com/2019/03/21/spoke-igmp-multicast/
Mar 21, 2019 · Spoke: IGMP (Multicast) In the last post, we talked about some of the fundamental details of multicast, the challenges it solves, and the basics of how it works. This time, let’s focus on the method by which receivers signal their interest in multicast feeds.
https://community.cisco.com/t5/routing/multicast-in-dmvpn/td-p/1761183
Oct 11, 2011 · Multicast in DMVPN Yes of course - just add the command "igmp join-grooup x.x.x.x" to an interface on the R_SPOKE router. The interface must have PIM enabled on it.
https://www.cisco.com/c/en/us/products/collateral/security/dynamic-multipoint-vpn-dmvpn/data_sheet_c78-468520.html
Jul 25, 2017 · Product Overview. Cisco ® Dynamic Multipoint VPN (DMVPN) is a Cisco IOS ® Software-based security solution for building scalable enterprise VPNs that support distributed applications such as voice and video (Figure 1).. Cisco DMVPN is widely used to combine enterprise branch, teleworker, and extranet connectivity. Major benefits include: On-demand full mesh connectivity with simple hub …
https://www.reddit.com/r/networking/comments/bvwk1f/spoketospoke_ip_multicast_over_dmvpn/
options to transfer multicast traffic over a spoke-to-spoke connection. Nope. Not in DMVPN. Spoke routers aren't PIM neighbors (for that to work you'd need the full complement of IPSec SAs pre-built between spokes all the time).
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