858 Configuring Routing Interfaces
Configuring Tunnels
Beginning in Privileged EXEC mode, use the following commands to 
configure a loopback interface.
NOTE: For information about configuring the IPv6 interface characteristics for a 
tunnel, see "Configuring IPv6 Routing" on page 1045.
Command Purpose
configure Enter Global Configuration mode.
interface tunnel 
tunnel-id
Create the tunnel interface and enter Interface 
Configuration mode for the specified tunnel.
tunnel mode ipv6ip [6to4] Specify the mode of the tunnel. If you use the 6to4 
keyword, the tunnel is an automatic tunnel. If you omit 
the keyword, the tunnel is a point-to-point (configured) 
tunnel.
ipv6 enable Enable IPv6 on this interface using the Link Local 
address.
tunnel source {
ipv4addr 
| 
vlan 
vlan-id
}
Specify the source transport address of the tunnel, 
either, which can be an IPv4 address or a VLAN routing 
interface.
tunnel destination 
ipv4addr
Specify the destination transport IPv4 address of the 
tunnel.
CTRL + Z Exit to Privileged EXEC mode.
show interfaces tunnel 
[
tunnel-id
]
View configuration information for all tunnels or for the 
specified tunnel.