> IPv6 to IPv4 Tunnel Interface Configuration Mode Commands
> The IPv6 to IPv4 Tunnel Interface Configuration Mode is used to create and manage the IP interfaces for addresses, address resolution options, etc.
> Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
> destination address
> Configures the destination of the tunnelled packets for a manual tunnel.
> Product
> All
> Privilege
> Administrator
> Syntax
> destination address address
> no destination address
> no
> Removes configuration for the specified keyword.
> address
> Specifies the IP address of the destination device. address must be specified in IPv4 dotted decimal notation or IPv6 colon-separated notation.
> Usage
> Use this command to configure the IP address of the destination end of the tunnel.
> Example
> The following command sets the destination address for packets on this tunnelled interface to 1.2.3.4:
> destination address 1.2.3.4
> end
> Exits the current configuration mode and returns to the Exec mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> end
> Usage
> Use this command to return to the Exec mode.
> exit
> Exits the current mode and returns to the parent configuration mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> exit
> Usage
> Use this command to return to the parent configuration mode.
> mode
> Configures the mode of IPv6 to IPv4 tunneling. The default is set to manual mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> mode { 6to4 | manual }
> default mode
> 6to4
> Configures automatic 6to4 IPv6 to IPv4 tunnels as specified in RFC 3056.
> manual
> Configures point-to-point manual IPv6 to IPv4 tunnels by specifying IPv4 address of the tunnel remote end.
> default
> Resets the mode of IPv6 to IPv4 tunneling to manual mode.
> Usage
> There can be only one 6to4 tunnel possible in a context. Once a 6to4 tunnel is configured, all subsequent tunnels will be configured as manual tunnels.
> Example
> The following command configures the mode to 6to4.
> mode 6to4
> The following command configures the mode to 6to4.
> mode manual
> source
> Configures the source of tunneled packets.
> Product
> PDSN, HA
> Privilege
> Security Administrator, Administrator
> Syntax
> source { address ip_address | interface interface_name}
> no source { address | interface }
> address ip_address
> Specifies the IPv4 address to use as the source address of the tunnel.
> ip_address must be expressed in dotted-decimal notation.
> interface interface_name
> Specifies the name of a non-tunnel IPv4 interface, whose address is used as the source address of the tunnel. interface must be from 1 to 79 alpha and/or numeric characters.
> no source { address | interface }
> Removes configuration for the specified keyword.
> Usage
> Configures the source IPv4 address of the tunnel by either specifying the IP address (host address) or by specifying another configured non-tunnel IPv4 interface. The source address must be an existing interface address before it is used. State of source address will affect the operational state of the tunnel.
> Example
> The following command configures the source address of the tunnel.
> source address 1.2.3.4
> The following command specifies the source interface as testsource1.
> source interface testsource1
> tos
> Configures the type of service (TOS) settings of the outer IPv4 header of the tunneled packets.
> Product
> PDSN, HA
> Privilege
> Security Administrator, Administrator
> Syntax
> tos { copy | value tos_value }
> default tos
> copy
> Copies the DC octet of IPv6 packet to the TOS octet of IPv4 packet.
> default
> Configures default setting for the specified keyword.
> value tos_value
> Configures the raw TOS value ranging from 0 to 255. The default is 0.
> Usage
> Sets the TOS parameter to be used in the tunnel transport protocol or instructs to copy TOS value from the original IPv6 DC byte to the TOS value of the encapsulating IPv4 header.
> Example
> The following command sets the tos value to 1:
> tos value 1
> ttl
> Configures the TTL (Time to live) value of the outer IPv4 header of the tunneled packets.
> Product
> PDSN, HA
> Privilege
> Security Administrator, Administrator
> Syntax
> ttl value ttl_value
> default
> Configures default setting for the specified keyword.
> value ttl_value
> ttl_value is a range from 1 to 255. The default is 16.
> Usage
> Configures the TTL parameter to be used in the tunnel transport protocol.
> Example
> The following command sets the TTL value to 25.
> ttl value 25

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