H3C Technologies H3C SecPath F1000-E - Manual (Page 113)

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EUI-64 embedded IPv4 address: 2.1.1.2
router link-layer address: 1.1.1.1
preferred global 2001::5efe:2.1.1.2, life 29d23h59m46s/6d23h59m46s (public)
preferred link-local fe80::5efe:2.1.1.2, life infinite
link MTU 1500 (true link MTU 65515)
current hop limit 255
reachable time 42500ms (base 30000ms)
retransmission interval 1000ms
DAD transmits 0
default site prefix length 48
# By comparison, it is found that the host acquires the address prefix 2001::/64 and
automatically generates the address 2001::5efe:2.1.1.2. Meanwhile, "uses Router Discovery" is
displayed, indicating that the router discovery function is enabled on the host. Ping the IPv6
address of the tunnel interface of the router. If the address is successfully pinged, an ISATAP tunnel
is established.
C:\>ping 2001::5efe:1.1.1.1
Pinging 2001::5efe:1.1.1.1 with 32 bytes of data:
Reply from 2001::5efe:1.1.1.1: time=1ms
Reply from 2001::5efe:1.1.1.1: time=1ms
Reply from 2001::5efe:1.1.1.1: time=1ms
Reply from 2001::5efe:1.1.1.1: time=1ms
Ping statistics for 2001::5efe:1.1.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 1ms, Average = 1ms
Verifying the configuration
After the configuration, the ISATAP host can access the host in the IPV6 network.
Configuring an IPv4 over IPv4 tunnel
Configuration prerequisites
Configure IP addresses for interfaces (such as the VLAN interface, GigabitEthernet interface, and
loopback interface) on the firewall to ensure normal communication. One of the interfaces will be used
as the source interface of the tunnel.
Configuration guidelines
Follow these guidelines when you configure an IPv4 over IPv4 tunnel:
• To encapsulate and forward IPv4 packets whose destination address does not belong to the subnet
where the receiving tunnel interface resides, 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