3com S7906E Manuel De Montage

 

1-42 

Create a tunnel interface and 
enter tunnel interface view 

interface tunnel 
interface-number 

Required 

By default, there is no tunnel 
interface on a device. 

Configure an IPv4 address for 
the tunnel interface 

ip address ip-address { mask | 
mask-length } 

Required 

By default, no IPv4 address is 
configured for a tunnel 
interface. 

Set the tunnel mode to GRE 
over IPv6. 

tunnel-protocol gre ipv6 

Required 

By default, the tunnel is a GRE 
over IPv4 tunnel 

Note that you need to configure 
the same tunnel mode on both 
ends of a 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 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 IP Routing Volume.

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.