H3C Technologies H3C SecPath F1000-E - Manual (Page 176)

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To do… Use the command… Remarks
Configure an IPv4 address for
the tunnel interface ip address ip-address { mask |
mask-length } [ sub ]
Required
By default, no IPv4 address is configured
for the tunnel interface.
Specify the IPv4 over IPv6
tunnel mode
tunnel-protocol ipv4-ipv6
Optional
The default tunnel mode is GRE over IPv4.
The same tunnel mode should be
configured at both ends of the tunnel.
Otherwise, packet delivery will fail.
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 the tunnel.
Configure the destination
address for the tunnel
interface
destination ipv6-address
Required
By default, no destination address is
configured for the tunnel.
NOTE:
•
To encapsulate and forward IPv4 packets whose destination address does not belong to the subnet
where the receiving tunnel interface resides, you need to configure a static route or dynamic routing for
forwarding those packets through this tunnel interface. If you configure a static route to that destination
IPv4 address, specify this tunnel interface as the outbound interface, or the peer tunnel interface address
as the next hop. A similar configuration needs to be performed at the other tunnel end. If you configure
dynamic routing at both ends, enable the dynamic routing protocol on both tunnel interfaces. For the
detailed configuration, see
Static Routing Configuration or other routing protocol configurations in the IP
Routing Volume.
• Two or more tunnel interfaces using the same encapsulation protocol must have different source and
destination addresses.
• If you specify a source interface instead of a source address for the tunnel, the source address of the
tunnel is the primary IP address of the source interface.
Configuration Example
Network requirements
As shown in Figure 13 , the two IPv4 subnets Group 1 and Group 2 are interconnected over the IPv6
network by using an IPv4 over IPv6 tunnel between Device A and Device B.
Figure 13 Network diagram for an IPv4 over IPv6 tunnel