Enabling Nat-Pt; Configuring A Nat-Pt Prefix; Configuring Mappings For Ipv4 Hosts Accessing Ipv6 Hosts - 3Com MSR 50 Series Configuration Manual

682 C 47: NAT-PT C
HAPTER

Enabling NAT-PT

Configuring a NAT-PT
Prefix
c
Configuring Mappings
for IPv4 Hosts Accessing
IPv6 Hosts
ONFIGURATION
Follow these steps to enable NAT-PT:
To do...
Enter system view
Enter interface view
Enable NAT-PT
A NAT-PT prefix is used for configuring dynamic IPv4-to-IPv6 and IPv6-to-IPv4
mappings.
You can configure such a dynamic IPv6-to-IPv4 mapping rule as follows:
When a packet is sent from an IPv6 network to an IPv4 network, the NAT-PT device
receiving the packet will detect the prefix of the destination IPv6 address of the
packet. An IPv6-to-IPv4 translation will be performed only when the prefix is the
same as the configured one.
For dynamic IPv4-to-IPv6 mappings, if the source IPv4 address complies with the
specified ACL rule, a NAT-PT prefix will be added to translate the source IPv4
address into an IPv6 address.
Follow these steps to configure a NAT-PT prefix:
To do...
Enter system view
Configure a NAT-PT
prefix
CAUTION:
The NAT-PT prefix must not be the same as the network address of the NAT-PT
■
enabled interface on the IPv6 network.
To delete a NAT-PT prefix that has been referenced by another command, you
■
need to cancel the reference configuration first.
Mappings for IPv4 hosts accessing IPv6 hosts refer to the IPv4-to-IPv6 NAT of
packets. When a packet is sent from an IPv4 network to an IPv6 network, the
source IPv4 address is translated to an IPv6 address in accordance with the
configured mappings.
There are static and dynamic mappings for IPv4 hosts to access IPv6 hosts.
A static IPv4-to-IPv6 mapping is used to translate a source IPv4 address into a
■
corresponding IPv6 address.
A dynamic IPv4-to-IPv6 mapping means that if the source IPv4 address
■
complies with the specified ACL rule, a NAT-PT prefix will be added to translate
the source IPv4 address into an IPv6 address.
Use the command...
system-view
interface interface-type
interface-number
natpt enable
Use the command...
system-view
natpt prefix natpt-prefix [ interface
interface-type interface-number [ nexthop
ipv4-address ] ]
Remarks
-
-
Required.
Disabled by default
Remarks
-
Required