17-42
To do…
Use the command…
Remarks
Configure the source address or
interface for the tunnel interface
source
{
ipv6-address
|
interface-type interface-number
}
Required
By default, no source address or
interface is configured for a tunnel
interface.
Configure the destination address
for the tunnel interface
destination
ipv6-address
Required
By default, no destination address
is configured for a tunnel interface.
Configure a route through the
tunnel
Refer to
the Routing protocol
configurations in the Layer 3 - IP
Routing Configuration Guide
Optional
Each end of the tunnel must have
a route (static or dynamic) through
the tunnel to the other end.
Note that:
z
If you delete a tunnel interface, the functions configured on this tunnel interface will be removed
as well.
z
The source address and destination address of a tunnel uniquely identify a path. They must be
configured at both ends of the tunnel and the source address at one end must be the destination
address at the other end and vice versa.
z
Tunnel interfaces using the same encapsulation protocol must have different source addresses
and destination addresses.
z
If you configure a source interface for a tunnel interface, the tunnel interface takes the primary IP
address of the source interface as its source address.
z
When configuring a route through the tunnel, you can configure a static route, using the address
of the network segment the original packet is destined for as its destination address and the
address of the peer tunnel interface as its next hop. Or, you can enable a dynamic routing
protocol on both the tunnel interface and the router interface connecting the private network, so
that the dynamic routing protocol can establish a routing entry that allows the tunnel to forward
packets through the tunnel. It is not allowed to set up a static route whose destination address is
in the subnet of the tunnel interface.
Configuration Example
Network requirements
Two IPv4 subnets Group 1 and Group 2 are interconnected through a GRE tunnel over the IPv6
network between Switch A and Switch B.
