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Tunnel through the IPv4:-
->Internet traffic is expected to be carried via tunnels as the Internet infrastructure migrates from
IPv4, the current version of the Internet protocol, to the long-anticipated upgrade known as IPv6.
->IPv4 uses 32-bit addresses and can support 4.3 billion devices connected directly to the
Internet.
->Internet:-Will probably move to IPv6 “from the edges in”
-> IPv6 will be adopted:-First by smaller organizations with greater flexibility and higher
tolerance for difficulties of pioneering
-> IPv6 packet is formed normally:- Sent to a router capable of encapsulating it in an IPv4
packet.
->Used to allow IPv6 network nodes to send packets over an IPv4 network infrastructure
->Presents a challenge for IPv6 header construction
-> Source node determines which packets must be encapsulated
->Based on the routing information the node maintains in its own routing table.
Types of Tunnels:-
1)RFC 2893 originally specified two different tunneling types
–Configured and automatic
2)RFC 4213, which made RFC 2893 obsolete
– Removed references to automatic tunneling
3)Configured tunnels
–Require that end point addresses be determined in the encapsulator device
4) From configuration data stored for each tunnel.
Solution
Tunnel through the IPv4:-
->Internet traffic is expected to be carried via tunnels as the Internet infrastructure migrates from
IPv4, the current version of the Internet protocol, to the long-anticipated upgrade known as IPv6.
->IPv4 uses 32-bit addresses and can support 4.3 billion devices connected directly to the
Internet.
->Internet:-Will probably move to IPv6 “from the edges in”
-> IPv6 will be adopted:-First by smaller organizations with greater flexibility and higher
tolerance for difficulties of pioneering
-> IPv6 packet is formed normally:- Sent to a router capable of encapsulating it in an IPv4
packet.
->Used to allow IPv6 network nodes to send packets over an IPv4 network infrastructure
->Presents a challenge for IPv6 header construction
-> Source node determines which packets must be encapsulated
->Based on the routing information the node maintains in its own routing table.
Types of Tunnels:-
1)RFC 2893 originally specified two different tunneling types
–Configured and automatic
2)RFC 4213, which made RFC 2893 obsolete
– Removed references to automatic tunneling
3)Configured tunnels
–Require that end point addresses be determined in the encapsulator device
4) From configuration data stored for each tunnel.

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Tunnel through the IPv4--Internet traffic is expected to be carr.pdf

  • 1. Tunnel through the IPv4:- ->Internet traffic is expected to be carried via tunnels as the Internet infrastructure migrates from IPv4, the current version of the Internet protocol, to the long-anticipated upgrade known as IPv6. ->IPv4 uses 32-bit addresses and can support 4.3 billion devices connected directly to the Internet. ->Internet:-Will probably move to IPv6 “from the edges in” -> IPv6 will be adopted:-First by smaller organizations with greater flexibility and higher tolerance for difficulties of pioneering -> IPv6 packet is formed normally:- Sent to a router capable of encapsulating it in an IPv4 packet. ->Used to allow IPv6 network nodes to send packets over an IPv4 network infrastructure ->Presents a challenge for IPv6 header construction -> Source node determines which packets must be encapsulated ->Based on the routing information the node maintains in its own routing table. Types of Tunnels:- 1)RFC 2893 originally specified two different tunneling types –Configured and automatic 2)RFC 4213, which made RFC 2893 obsolete – Removed references to automatic tunneling 3)Configured tunnels –Require that end point addresses be determined in the encapsulator device 4) From configuration data stored for each tunnel. Solution Tunnel through the IPv4:- ->Internet traffic is expected to be carried via tunnels as the Internet infrastructure migrates from IPv4, the current version of the Internet protocol, to the long-anticipated upgrade known as IPv6. ->IPv4 uses 32-bit addresses and can support 4.3 billion devices connected directly to the Internet. ->Internet:-Will probably move to IPv6 “from the edges in” -> IPv6 will be adopted:-First by smaller organizations with greater flexibility and higher tolerance for difficulties of pioneering -> IPv6 packet is formed normally:- Sent to a router capable of encapsulating it in an IPv4 packet.
  • 2. ->Used to allow IPv6 network nodes to send packets over an IPv4 network infrastructure ->Presents a challenge for IPv6 header construction -> Source node determines which packets must be encapsulated ->Based on the routing information the node maintains in its own routing table. Types of Tunnels:- 1)RFC 2893 originally specified two different tunneling types –Configured and automatic 2)RFC 4213, which made RFC 2893 obsolete – Removed references to automatic tunneling 3)Configured tunnels –Require that end point addresses be determined in the encapsulator device 4) From configuration data stored for each tunnel.