Configuring Mappings For Ipv6 Hosts Accessing Ipv4 Hosts - 3Com MSR 50 Series Configuration Manual

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Configuring Mappings
for IPv6 Hosts Accessing
IPv4 Hosts
Follow these steps to configure mappings for IPv4 hosts accessing IPv6 hosts:
To do...
Enter system view
Configure Configure static mappings
mappings for IPv4 for IPv4 hosts accessing IPv6
hosts accessing hosts
IPv6 hosts
Configure dynamic
mappings for IPv4 hosts
accessing IPv6 hosts
The natpt-prefix argument specified in the natpt v6bound dynamic prefix
■
natpt-prefix interface interface-type interface-number command must have
been configured with the natpt prefix command.
For ACL configuration, refer to
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Mappings for IPv6 hosts accessing IPv4 hosts refer to the IPv6-to-IPv4 NAT of
packets. When a packet is sent from an IPv6 network to IPv4 network, the source
IPv6 address is translated to an IPv4 address in accordance with the configured
mappings.
There are static and dynamic mappings for IPv6 hosts accessing IPv4 hosts.
A static IPv6-to-IPv4 mapping is used to translate a source IPv6 address into a
■
corresponding IPv4 address.
A dynamic IPv6-to-IPv4 mapping means that if the source IPv6 address
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complies with the rule of an IPv6 ACL or the destination IPv6 address contains a
NAT-PT prefix, the source IPv6 address will be translated into an IPv4 address in
the specified NAT-PT address pool or an IPv4 address of the 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 of 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 an 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 contains a NAT-PT prefix, the source IPv6
address will be translated into an IPv4 address of the specified address pool.
Configuring NAT-PT
Use the
command...
system-view
natpt v4bound
static { ipv4-address
ipv6-address |
v6server protocol
protocol-type
ipv4-address
ipv4-port-number
ipv6-address
ipv6-port-number }
natpt v4bound
dynamic acl
number acl-number
prefix natpt-prefix
"Configuring ACLs" on page
683
Remarks
-
Configure either
static mappings or
dynamic mappings
1881.