3Com Switch 8800 Advanced Software V5 Configuration Guide

Configuring IPv4 over IPv4 Tunnel 395
# A link-local address (fe80::5efe:2.1.1.2) in the ISATAP format is automatically
generated for the ISATAP interface. Configure an IPv4 address for the ISATAP
switch on the ISATAP interface.
C:\>ipv6 rlu 2 2.1.1.1
# After carrying out the above command, look at the information on the ISATAP
interface.
C:\>ipv6 if 2
Interface 2: Automatic Tunneling Pseudo-Interface
{48FCE3FC-EC30-E50E-F1A7-71172AEEE3AE}
does not use Neighbor Discovery
uses Router Discovery
routing preference 1
EUI-64 embedded IPv4 address: 2.1.1.2
router link-layer address: 2.1.1.1
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
# 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 switch discovery function is
enabled on the host. At this time, ping the IPv6 address of the tunnel interface of
the switch. If the address is successfully pinged, an ISATAP tunnel is established.
# Configure a static route to the IPv6 host.
C:\>ipv6 rtu 3000::/64 2/2001::5efe:2.1.1.1
Configuration verification
After the above configurations, the ISATAP host can access hosts in the IPV6
network.
Configuring IPv4 over
IPv4 Tunnel
Configuration
Prerequisites
IP addresses are configured for interfaces such as VLAN interface and Loopback
interface on the device so that they can communicate. These interfaces serve as
the source interface of the virtual tunnel interface to ensure that the tunnel
destination address is reachable.
Configuration Procedure Follow these steps to configure an IPv4 over IPv4 tunnel:
To do... Use the command... Remarks
Enter system view system-view -
Create a tunnel interface and
enter tunnel interface view
interface tunnel number Required
By default, there is no tunnel
interface on the device.