> Tunnel Interface Configuration Mode Commands
> The Tunnel Interface Configuration Mode is used to create and manage the IP interfaces for various types of tunnels including associated parameters, such as addresses and address resolution options.
> Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
> description
> Enters descriptive text for the current interface.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> description text
> no description
> no
> Clears the description for the interface.
> text
> Contains the descriptive text for this interface. text must be an alphanumeric string of 0 through 79 characters. If spaces are required, the string must be bracketed with double quotation marks (“). The interface description is case sensitive.
> Usage
> Set the description to provide useful information regarding the interface’s primary function, services, end users, etc.
> Example
> The following command describes 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
> Configures the IPv4 address for this 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 IPv4 dotted-decimal and CIDR notation. ip_maskis an integer 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 IPv4 dotted-decimal notation. ip_mask must be specified using the 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.
> Zeroes (“0”) in the resulting mask indicate that the corresponding bit in the IP address is not significant in determining the network for packet routing.
> Ones (“1”) 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 10.2.3.4 as IPv4 address to this tunnel interface:
> ip address 10.2.3.4
> ipv6 address
> 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 usingIPv6 colon-separated and CIDR notation. ipv6_mask is 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 IPv6 address to this tunnel interface:
> ipv6 address 1001::2:010:1234
> tunnel-mode
> Configures the tunnel mode type for this tunnel interface. It also enters 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, the tunnel mode is set to IPv6-to-IPv4 type.
> gre
> Default: Disabled
> Sets the tunnel interface mode to Generic Routing Encapsulation (GRE) type and enters the GRE Tunnel Configuration mode, if required.
> ipv6ip
> Default: Enabled
> 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 the tunneling interface.
> Example
> The following command sets the tunnel mode to GRE for specific interface:
> tunnel-mode gre

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