H3C Technologies H3C SecPath F1000-E - Manual (Page 193)

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• If the destination IPv6 address in a packet sent from an IPv6 host to an IPv4 host matches a static
IPv4/IPv6 address mapping, the destination IPv6 address is translated into the corresponding IPv4
address.
Follow these steps to configure a static IPv4/IPv6 address mapping on the IPv4 side:
To do… Use the command… Remarks
Enter system view system-view —
Configure a static IPv4/IPv6 address
mapping on the IPv4 side natpt v4bound static ipv4-address
ipv6-address
Required
Configuring a dynamic mapping on the IPv4 side
A dynamic IPv4/IPv6 address mapping on the IPv4 side means that if the source IPv4 address matches
a specified ACL, the source IPv4 address is added with a NAT-PT prefix as the translated IPv6 address.
Follow these steps to configure a dynamic IPv4/IPv6 mapping on the IPv4 side:
To do… Use the command… Remarks
Enter system view system-view —
Configure a dynamic IPv4/IPv6 address
mapping on the IPv4 side natpt v4bound dynamic acl number
acl-number prefix natpt-prefix
Required
NOTE:
•
The natpt-prefix argument specified in the natpt v6bound dynamic acl number acl-number prefix
natpt-prefix command must have been configured with the natpt prefix command.
• For the ACL configuration, see ACL Configuration in the Firewall Web Configuration Manual.
Setting the ToS Field after NAT-PT Translation
You can set the ToS field in IPv4 packets translated from IPv6 packets to 0 or leave it unchanged. 0
indicates that the service priority of the translated packet is set to the lowest. Unchanged indicates that
the existing service priority is used.
Follow these steps to set the ToS field in packets after NAT-PT translation:
To do… Use the command… Remarks
Enter system view system-view —
Set the ToS field in IPv4
packets translated from IPv6
packets to 0
natpt turn-off tos
Required
By default, the value of the ToS field of IPv4
packets is the same as that of the Traffic
Class field in corresponding IPv6 packets.
Setting the Traffic Class Field after NAT-PT Translation
You can set the Traffic Class field in IPv6 packets translated from IPv4 packets to 0 or leave it unchanged.
0 indicates that the service priority of the translated packet is set to the lowest. Unchanged indicates that
the existing service priority is used.