> Tunnel Interface Configuration Mode Commands
> The Tunnel Interface Configuration Mode is used to create and manage the IP interfaces for various type of tunnels and its parameters like 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).
> description
> Configures the description text for the current interface.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> description text
> no description
> no
> Clears the description for the interface.
> text
> Specifies the descriptive text to use. text must be 0 to 79 alpha and/or numeric characters with no spaces or a quoted string of printable characters. The interface description is case sensitive.
> Usage
> Set the description to provide useful information on the interface’s primary function, services, end users, etc. Any information useful may be provided.
> Example
> Following command sets the description about this interface:
> description sampleInterfaceDescriptiveText
> 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.
> ip address
> This command configures the IPv4 address for the specific tunnel interface.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> ip address [ip_address/ip_mask | ip_address ip_mask]
> no ip address ip_address
> no
> Removes the configured IPv4 address bound to a tunnel interface.
> ip_address/ip_mask | ip_address ip_mask
> Specifies a destination IP address or group of addresses that will use this route.
> ip_address/ip_mask: Specifies a combined IP address subnet mask bits to indicate what IP addresses to which the route applies. ip_address/ip_mask must be specified using the form ‘IP Address/Mask Bits’ where the IP address is specified using the standard IPv4 dotted decimal notation and the mask bits are a numeric value which is the number of bits in the subnet mask.
> ip_address ip_mask: Specifies an IP address and the networking (subnet) mask pair which is used to identify the set of IP addresses to which the route applies. ip_address must be specified using the standard IPv4 dotted decimal notation. ip_mask must be specified using the standard IPv4 dotted decimal notation as network mask for subnets.
> The mask as specified by ip_mask or resulting from ip_address/ip_mask is used to determine the network for packet routing.
> 0’s in the resulting mask indicate the corresponding bit in the IP address is not significant in determining the network for packet routing.
> 1’s in the resulting mask indicate the corresponding bit in the IP address is significant in determining the network.
> Usage
> Use this command to bind the IPv4 address to a tunnel interface. This address does not affect the encapsulation of packets going out on the tunnel interface.
> Example
> The following command will assign the 1.2.3.4 as IPv4 address to this tunnel interface:
> ip address 1.2.3.4
> ipv6 address
> This command configures the IPv6 address for the specific tunnel interface.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> ipv6 address ipv6_address/ipv6_mask
> no ipv6 address ipv6_address
> no
> Removes the configured IPv6 address bound to a tunnel interface.
> ipv6_address/ipv6_mask
> Specifies a destination IP address or group of addresses that will use this route.
> ipv6_address/ipv6_mask: Specifies a combined IP address subnet mask bits to indicate what IP addresses to which the route applies. ipv6_address/ipv6_mask must be specified using the form ‘IP Address/Mask Bits’ where the IP address is specified using the standard IPv4 dotted decimal notation and the mask bits are a numeric value which is the number of bits in the subnet mask.
> Usage
> Use this command to bind the IPv6 address to a tunnel interface. This address does not affect the encapsulation of packets going out on the tunnel interface.
> Example
> The following command will assign the 1001::2:010:1234 as IPv4 address to this tunnel interface:
> ipv6 address 1001::2:010:1234
> tunnel-mode
> This command configures the tunnel mode type for specific tunnel interface. It also creates the specific tunnel configuration mode if required.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> tunnel-mode {gre | ipv6ip}
> defualt tunnel-mode
> default
> Sets the default tunnel mode for this interface. By default tunnel mode is set to IPv6-to-IPv4 type.
> gre
> Default: Disabled
> This keyword sets the tunnel interface mode to GRE type and creates the GRE tunnel Configuration mode if required.
> ipv6ip
> Default: Enabled
> This keyword sets the tunnel interface mode to IPv6-to-IPv4 type and creates the IPv6-to-IPv4 Tunnel Configuration mode, if required.
> Usage
> Use this command to set the tunnel mode type of GRE or IPv6-to-IPv4 for tunneling interface.
> Example
> The following command sets the tunnel mode to GRE for specific interface:
> tunnel-mode gre

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