NGMunia / IPv4-VPN-over-IPv6

This lab employs IPv4 mGRE ovelay over IPv6 transport network

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IPv4-VPN-over-IPv6

The following employs IPv4-VPN mGRE overlay with IPv6 as the underlay (Transport network).

This can be implemented in scenarios where ISPs are transitioning and rolling out IPv6 in their infrastructure.

The IPv6 network serves as the underlay network while IPv4 serves as the overlay network.

The VPN configuration allows communications between spokes within a region and the central network while restricting inter-regional communication.

This is achieved through route filtering.

Topology

HQ-HUB-1#sh dmvpn 
==========================================================================

Interface: Tunnel10, IPv4 NHRP Details 
Type:Hub, NHRP Peers:6, 

 # Ent  Peer NBMA Addr Peer Tunnel Add State  UpDn Tm Attrb
 ----- --------------- --------------- ----- -------- -----
     1 2001:44:67:28:A8BB:CCFF:FE00:930
                            172.16.0.2    UP 00:05:22     D
     1 2001:44:67:28:A8BB:CCFF:FE00:830
                            172.16.0.3    UP 00:05:22     D
     1 2001:72:73:74:A8BB:CCFF:FE00:A30
                            172.16.0.4    UP 00:05:22     D
     1 2001:72:73:74:A8BB:CCFF:FE00:430
                            172.16.0.5    UP 00:05:21     D
     1 2001:32:19:86:A8BB:CCFF:FE00:330
                            172.16.0.6    UP 00:05:20     D
     1 2001:32:19:86:A8BB:CCFF:FE00:230
                            172.16.0.7    UP 00:05:22     D
          

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This lab employs IPv4 mGRE ovelay over IPv6 transport network


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