IPV6.EXE, PING6.EXE, AND TRACERT6.EXE.6TO4 TUNNELING6TO4 TUNNELING IS...

2003: - MCSE EXAM 70 293 PLANNING AND MAINTAINING A WINDOWS SERVER 2003 NETWORK INFRASTRUCTURE PHẦN 3 PPSX 2003: - MCSE EXAM 70 293 PLANNING AND MAINTAINING A WINDOWS SERVER 2003 NETWORK INFRASTRUCTURE PHẦN 3 PPSX
MCSE EXAM 70 293 PLANNING AND MAINTAINING A WINDOWS SERVER 2003 NETWORK INFRASTRUCTURE PHẦN 3 PPSX
2003: ipv6.exe, ping6.exe, and tracert6.exe.

6to4 Tunneling

6to4 tunneling is used to encapsulate IPv6 data packets in IPv4 headers before they aretransmitted to the destination host. 6to4 tunneling uses a 6to4 host and 6to4 routers todeliver the IPv6 data. It is an Internet standard, defined in RFC 3056, and is used for inter-operability between IPv4 and IPv6 networks. 6to4 hosts and routers are defined as follows:

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6to4 host Any IPv6 host that is configured with at least one 6to4 address. 6to4can be configured with the netsh interface ipv6 6to4commands. As you mighthave noticed when you ran the show interfacecommand, by default, your IPv6-enabled host will have a 6to4 pseudo-interface, as well as an automatic tunnelingpseudo-interface.

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6to4 router Uses IPv4 and IPv6 to forward 6to4 traffic to the destination 6to4hosts. It is also possible to implement a 6to4 relay router to forward 6to4 routertraffic on the IPv6 Internet.With 6to4 tunneling, it is not necessary for IPv6 hosts (such as the computer on whichyou installed IPv6 in Exercise 3.4) to get an IPv6 global address prefix from their ISPs.Thehost can create a 6to4 address automatically.

IPv6 Helper Service

The IPv6 Helper service is responsible for automatically configuring itself with the appro-priate 6to4 addresses, but it uses a specific 6to4 router on the Internet.You can test func-tionality with the ping -6command.

The 6bone

The 6bone is a dedicated IPv6 network that exists on the Internet. It began as a virtualnetwork using IPv6 over IPv4 encapsulation. It contains links to many sites and includes agreat deal of IPv6 data, testing plans, news, current events, and implementation instructions.It will be a valuable resource for managing IPv6 on your network. For more informationabout the 6bone, see https://traloihay.net. For instructions on how to connect to the 6bone, seewww.opus1.com/ipv6/whatisthe6bone.html.

Teredo (IPv6 with NAT)

Teredo is the name for IPv4 network address translator (NAT) traversal for IPv6. It providesan IPv6/IPv4 translation over NAT and address assignment.Teredo also provides the mech-anism for host-to-host automatic tunneling for unicast IPv6 connectivity when IPv6/IPv4hosts are located behind one or more NAT servers.Currently, to provide IPv6 connectivity over the Internet, you must have a 6to4 routerwith a public IPv4 address, which is not always feasible.Teredo provides a mechanism forIPv6 traffic to traverse NAT and access the Internet using IPv6. Basically, IPv6 packets aresent as IPv4-based UDP messages, and this allows the IPv6 packets to pass through theIPv4 NAT server. For more information about Teredo, see the Teredo Overview documentlocated at https://traloihay.net.

Planning the Network Topology

EXAM