3com S7906E Manuel De Montage

 

1-38 

    5 packet(s) transmitted 

    5 packet(s) received 

    0.00% packet loss 

    round-trip min/avg/max = 1/19/31 ms 

 

 

EB boards and SD boards support only the GRE over IPv4 Tunnel. 

 

Interfaces on a device, such as VLAN interfaces, and loopback interfaces, are configured with IPv4 

addresses and can communicate. These interfaces can be used as the source of a virtual tunnel 

interface to ensure the reachability of the tunnel destination address.  

Follow these steps to configure a GRE over IPv4 tunnel: 

Enter system view 

system-view 

— 

Create a tunnel interface and 
enter tunnel interface view 

interface tunnel 
interface-number 

Required 

By default, a device has no 
tunnel interface. 

Configure an IPv4 address for 
the tunnel interface 

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

Required 

By default, a tunnel interface 
has no IPv4 address. 

Set the tunnel mode to GRE 
over IPv4 

tunnel-protocol gre 

Optional 

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 { ip-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 ip-address 

Required 

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