D-Link DGS-6600-48T Product Manual - Page 904

DGS-6604 m tunnel mode tunnel mode Use the tunnel mode ipv6ip configuration command to manually specify an IPv6 configured tunnel. The optional parameter 6to4 or isatap means that tunnel type is 6to4 or ISATAP. Use the no form of the command to remove the IPv6 specification. tunnel mode ipv6ip [6to4 | isatap] no tunnel mode Syntax Description 6to4 Specifies the IPv6 tunnel is a 6to4 tunnel type. isatap Specifies the IPv6 tunnel type is a ISATAP tunnel type. Default Command Mode Usage Guideline Examples None Interface configuration Tunnel interfaces are valid for this command. In automatic 6to4 and ISATAP tunnels, routers are not configured in pairs. If a tunnel interface has the tunnel destination address configured, then it will not be able to configure the tunnel type to 6to4 or ISATAP tunnel mode. In the 6to4 tunnel, the IPv4 address embedded in the IPv6 address is used to locate the far end of the automatic tunnel. The IPv4 address of the border router is extracted from the IPv6 address that, as an example, starts with the prefix 2002::/16, where the format is 2002::IPv4-address:/48. The ISATAP tunnel uses a unicast address that includes a 64-bit IPv6 prefix and a 64-bit interface identifier. The IPv4 address is encoded in the last 32 bits of the interface identifier. When the IPv4 address is known to be globally unique, the first 32 bits of the interface identifier is 0000:5EFE; otherwise it is 0200:5EFE. The interface identifier is created in modified EUI-64 format. This example shows how to specify an IPv6 manually configured tunnel. Switch(config)# interface tunnel 2 Switch(config-if)#tunnel mode ipv6ip Switch(config-if)# CLI Reference Guide 894