F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices VPN Configuration Guide-6PW100

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Minimum = 1ms, Maximum = 1ms, Average = 1ms
385BVerifying the configuration
After the configuration, the ISATAP host can access the host in the IPV6 network.
29B
Configuring an IPv4 over IPv4 tunnel
147BConfiguration prerequisites
Configure an IP addresses for the interface (such as a VLAN interface, Ethernet interface, or loopback
interface) to be configured as the source interface of the tunnel interface.
148BConfiguration guidelines
Follow these guidelines when you configure an IPv4 over IPv4 tunnel:
• If the destination IPv4 network is not on the same subnet as the IPv4 address of the local tunnel
interface, you must configure a route destined for the destination IPv4 network through the tunnel
interface. You can configure a static route, and specify the local tunnel interface as the output
interface or specify the IPv4 address of the peer tunnel interface as the next hop. Alternatively, you
can enable a dynamic routing protocol on both tunnel interfaces to achieve the same purpose. For
detailed configurations about static routes or other routing protocols, see Network Management
Configuration Guide.
• The IPv4 address of the local tunnel interface cannot be on the same subnet as the destination
address configured on the tunnel interface.
• The destination address of the route passing the tunnel interface must not be on the same subnet as
the destination address configured on the tunnel interface.
• Two or more local 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 a tunnel interface, the source
address of the tunnel is the primary IP address of the source interface.
149BConfiguration procedure
To configure an IPv4 over IPv4 tunnel:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter tunnel interface
view.
interface tunnel number N/A
3. Configure an IPv4
address for the tunnel
interface.
ip address ip-address { mask |
mask-length } [ sub ]
By default, no IPv4 address is
configured for the tunnel interface.
4. Specify the IPv4 over
IPv4 tunnel mode.
tunnel-protocol ipv4-ipv4
The default tunnel mode is GRE over
IPv4 mode. The same tunnel mode
should be configured at both ends of the
tunnel. Otherwise, packet delivery fails.