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https://www.cisco.com/c/en/us/products/security/dynamic-multipoint-vpn-dmvpn/index.html
Dynamic Multipoint VPN (DMVPN) is a Cisco IOS Software solution for building scalable IPsec Virtual Private Networks (VPNs). Cisco DMVPN uses a centralized architecture to provide easier implementation and management for deployments that require granular access controls for diverse user communities, including mobile workers, telecommuters, and ...
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.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_dmvpn/configuration/xe-16/sec-conn-dmvpn-xe-16-book/sec-conn-dmvpn-mtt.html
Sep 24, 2018 · DMVPN Support for IWAN DMVPN supports Cisco Intelligent WAN architecture to provide transport independence through overlay routing. The DMVPN Multiple Tunnel Termination feature enables support for secondary paths for the supported routing protocols in …
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_dmvpn/configuration/xe-16/sec-conn-dmvpn-xe-16-book/sec-conn-dmvpn-bfd-support.html
Sep 24, 2018 · BFD Support on DMVPN Bidirectional Forwarding Detection (BFD) support on DMVPN provides fast peer failure detection by sending rapid failure detection notices to the control protocols and reducing overall network convergence time.
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_conn_dmvpn/configuration/15-mt/sec-conn-dmvpn-15-mt-book/sec-conn-dmvpn-dmvpn.html
Jan 25, 2018 · DMVPN Support on the Cisco 6500 and Cisco 7600 Blade-to-Blade Switchover on the Cisco 6500 and Cisco 7600. DMVPN does not support blade-to-blade switchover on the Cisco 6500 and Cisco 7600. Cisco 6500 or Cisco 7600 As a DMVPN Hub. A Cisco 6500 or Cisco 7600 that is functioning as a DMVPN hub cannot be located behind a NAT router.
https://community.cisco.com/t5/switching/dmvpn-support/td-p/3949181
Oct 28, 2019 · I’m asking that because DMVPN is based on combination of protocols (MGRE, Routing protocols, NHRP, Ipsec..) and since the IP services support the Routing protocols (like a router) I want to know what block the support of the DMVPN in this case? is it …
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. The spokes are configured to send ...
https://community.cisco.com/t5/security-documents/dmvpn-with-configuration-example/ta-p/3145736
The only problem with a Phase 2 DMVPN is scalability. If you have a very large number of networks sitting behind each spoke (or a very large number of spokes with a couple of networks behind them), the routing table will get very large and Phase 2 DMVPNs don't support using summarization to reduce the size of the routing table.
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