To enter into the Interface Configuration (Tunnel) mode, use the interface tunnel command in Global Configuration mode.

Syntax

interface tunnel number

Parameters

• number—Specifies the tunnel number.

Command Mode

Global Configuration mode

Example

The following example enters the Interface Configuration (Tunnel) mode.

switchxxxxxx(config)# interface tunnel 1
switchxxxxxx(config-if)# tunnel source auto
switchxxxxxx(config-if)# exit

To specify the destination IPv4 address for the manual tunnel interface, use the tunnel destination command in Interface (Tunnel) Configuration mode. To remove the destination IPv4 address, use the no form of this command.

Syntax

tunnel destination {host-name | ip-address}

no tunnel destination

Parameters

• host-name—DNS name of the remote host.

• ip-address—IPv4 address of the remote host.

Default Configuration

No tunnel interface destination is specified.

Command Mode

Interface (Tunnel) Configuration mode

User Guidelines

You cannot configure two tunnels to use the same encapsulation mode with exactly the same source and destination address.

Example

The following example shows how to configure the tunnel destination address for Manual IPv6 tunnel:

switchxxxxxx(config)# interface vlan 1
switchxxxxxx(config-if)# ip address 10.0.0.1 255.255.255.0
switchxxxxxx(config-if)# exit
switchxxxxxx(config)# interface tunnel1
switchxxxxxx(config-if)# ipv6 address 3ffe:b00:c18:1::3/127
switchxxxxxx(config-if)# tunnel source vlan1
switchxxxxxx(config-if)# tunnel destination 192.168.30.1
switchxxxxxx(config-if)# tunnel mode ipv6ip
switchxxxxxx(config-if)# exit

To set the time interval between unsolicited router solicitation messages, use the tunnel isatap solicitation-interval command in Global Configuration mode. To restore the default configuration, use the no form of this command.

Syntax

tunnel isatap solicitation-interval seconds

no tunnel isatap solicitation-interval

Parameters

• seconds—Specifies the time interval in seconds between ISATAP router solicitation messages. (Range: 10–3600).

Default Configuration

The default time interval between ISATAP router solicitation messages is 10 seconds.

Command Mode

Global Configuration mode

User Guidelines

This command determines the interval between unsolicited router solicitation messages sent to discovery an ISATAP router.

Example

The following example sets the time interval between ISATAP router solicitation messages to 30 seconds.

switchxxxxxx(config)# tunnel isatap solicitation-interval 30

To configure the number of router solicitation refresh messages that the device sends, use the tunnel isatap robustness command in Global Configuration mode. To restore the default configuration, use the no form of this command.

Syntax

tunnel isatap robustness number

no tunnel isatap robustness

Parameters

• number—Specifies the number router solicitation refresh messages that the device sends. (Range: 1–20).

Default Configuration

The default number of router solicitation refresh messages that the device sends is 3.

Command Mode

Global Configuration mode

User Guidelines

The router solicitation interval (when there is an active ISATAP router) is the minimum-router-lifetime that is received from the ISATAP router, divided by (Robustness + 1).

Example

The following example sets the number of router solicitation refresh messages that the device sends to 5.

switchxxxxxx(config)# tunnel isatap robustness 5

To display information on IPv6 tunnels, use the show ipv6 tunnel command in User EXEC mode.

Syntax

show ipv6 tunnel [all]

Parameters

• all—(Optional) The switch displays all parameters of the tunnel. If the keyword is not configured only the tunnel parameters corresponding to its type are displayed.

Command Mode

User EXEC mode