H3C Technologies H3C SecPath F1000-E - Manual (Page 191)

6
To do… Use the command… Remarks
Enter system view system-view —
Configure a static IPv4/IPv6 address
mapping on the IPv6 side natpt v6bound static ipv6-address
ipv4-address
Required
Configuring a dynamic mapping on the IPv6 side
A dynamic IPv4/IPv6 mapping on the IPv6 side means that if the source IPv6 address matches a
specified IPv6 ACL or the destination IPv6 address is the same as the specified NAT-PT prefix, the source
IPv6 address will be translated into an IPv4 address in a specified NAT-PT address pool or the IPv4
address of a specified interface.
The device provides four types of dynamic mappings.
• Combination 1: Combination of an IPv6 ACL with an address pool
If the source IPv6 address of a packet matches the specified IPv6 ACL, the source IPv6 address will be
translated into an IPv4 address in the specified address pool.
• Combination 2: Combination of an IPv6 ACL with an interface address
If the source IPv6 address of a packet matches the specified IPv6 ACL, the source IPv6 address will be
translated into the IPv4 address of the specified interface.
• Combination 3: Combination of a NAT-PT prefix with an address pool
If the destination IPv6 address of a packet matches the NAT-PT prefix, the source IPv6 address will be
translated into an IPv4 address in the specified address pool.
• Combination 4: Combination of a NAT-PT prefix with an interface address
If the destination IPv6 address of a packet matches the NAT-PT prefix, the source IPv6 address will be
translated into the IPv4 address of the specified interface.
To use combination 1 or combination 3, you need to configure a NAT-PT address pool first.
A NAT-PT address pool is a group of contiguous IPv4 addresses and is used to translate an IPv6 address
into an IPv4 address dynamically. When an IPv6 packet is sent from an IPv6 network to an IPv4 network,
if the combination 1 or 3 is set, the NAT-PT device will select an IPv4 address from the NAT-PT address
pool as the source IPv4 address of the IPv6 packet.
Follow these steps to configure a dynamic IPv4/IPv6 address mapping on the IPv6 side:
To do… Use the command… Remarks
Enter system view system-view —
Configure a NAT-PT address pool
natpt address-group
group-number start-ipv4-address
end-ipv4-address
Required for the first type
and third type in which the
source IPv6 address is
translated into an IPv4
address in the specified
address pool.
This configuration is not
needed in the second type
and fourth type.