H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – IPv6 Configuration
H3C S7500E Series Ethernet Switches Chapter 3 Tunneling Configuration
3-4
destination address of an IPv6 packet and the IPv6 address of a tunnel interface both
adopt special addresses: ISATAP addresses. The ISATAP address format is
prefix(64bit):0:5EFE:ip-address. The ip-address is in the form of a.b.c.d or abcd:efgh,
where abcd:efgh represents a 32-bit source IPv4 address. Through the embedded IPv4
address, an ISATAP tunnel can automatically be created to transfer IPv6 packets. The
ISATAP tunnel is mainly used for connection between IPv6 routers or between a host
and an IPv6 router over an IPv4 network.
Figure 3-2 Principle of ISATAP tunnel
3.2 Tunneling Configuration Task List
Complete the following tasks to configure the tunneling feature:
Task Remarks
Configuring IPv6 Manual Tunnel Optional
Configuring 6to4 Tunnel Optional
Configuring
IPv6 over
IPv4 GRE
tunnel
Configuring ISATAP Tunnel Optional
3.3 Configuring IPv6 Manual Tunnel
3.3.1 Configuration Prerequisites
IP addresses are configured for interfaces such as the VLAN interface and loopback
interface on the device. These interfaces serve as the source interfaces of tunnel
interfaces to ensure that the tunnel destination addresses are reachable.
3.3.2 Configuration Procedure
Follow these steps to configure an IPv6 manual tunnel:
To do… Use the command… Remarks
Enter system view
system-view
—
Enable IPv6
ipv6
Required
By default, the IPv6
packet forwarding
function is disabled.