Contents

NAT66 commands· 1

display nat66 all 1

display nat66 session· 2

display nat66 statistics· 4

nat66 prefix destination· 4

nat66 prefix source· 6

reset nat66 session· 7

 

NAT66 commands

display nat66 all

Use display nat66 all to display all NAT66 configurations.

Syntax

display nat66 all

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display all NAT66 configurations.

<Sysname> display nat66 all

NAT66 source information:

  Totally 1 source rules.

  Interface(outbound): GigabitEthernet0/0/1

    Original prefix/prefix-length: 11::/64

    Translated prefix/prefix-length: 22::/64

 

NAT66 destination information:

  Totally 1 destination rules.

  Interface(inbound): GigabitEthernet0/0/2

    Original prefix/prefix-length: FD01:203:405::/48

    Translated prefix/prefix-length: 1::/48

Table 1 Command output

Field	Description
NAT66 source information	Configuration information about NAT66 source address translation.
NAT66 destination information	Configuration information about NAT66 destination address translation.
Totally n source rules	Total number of source address translation rules.
Totally n destination rules	Total number of destination address translation rules.
Interface(outbound)	Interface configured with NAT66 source address translation rules.
Interface(inbound)	Interface configured with NAT66 destination address translation rules.
Original prefix/prefix-length	Prefix and prefix length before NAT66 translation.
Translated  prefix/prefix-length	Prefix and prefix length after NAT66 translation.

 

Related commands

nat66 prefix destination

nat66 prefix source

display nat66 session

Use display nat66 session to display NAT66 sessions.

Syntax

display nat66 session [ slot slot-number ] [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays NAT66 sessions for all cards.

verbose: Displays detailed information about NAT66 sessions. If you do not specify this keyword, the command displays brief information about NAT66 sessions.

Usage guidelines

If you do not specify any parameters, this command displays brief information about all NAT66 sessions.

Examples

# Display brief information about NAT66 sessions for the specified slot.

<Sysname> display nat66 session slot 1

Slot 1:

Initiator:

  Source      IP/port: FD01:203:405::1/4048

  Destination IP/port: 2001:DB8:1::100/21

  VPN instance/VLAN ID/Inline ID: -/-/-

  Protocol: TCP(6)

  Inbound interface: GigabitEthernet0/0/2

 

Total sessions found: 1

# Display detailed information about NAT66 sessions for the specified slot.

<Sysname> display nat sessionslot 1 verbose

Slot 1:

Initiator:

  Source      IP/port: FD01:203:405::1/4048

  Destination IP/port: 2001:DB8:1::100/21

  VPN instance/VLAN ID/Inline ID: -/-/-

  Protocol: TCP(6)

  Inbound interface: GigabitEthernet0/0/2

  Source security zone: Trust

Responder:

  Source      IP/port: 2001:DB8:1::100/21

  Destination IP/port: 1:0:0:309::1/4048

  VPN instance/VLAN ID/Inline ID: -/-/-

  Protocol: TCP(6)

  Inbound interface: GigabitEthernet0/0/1

  Source security zone: Trust

State: TCP_ESTABLISHED

Application: FTP

Rule ID: -/-/-

Rule name:

Start time: 2018-12-10 09:19:28  TTL: 3585s

Initiator->Responder:            0 packets          0 bytes

Responder->Initiator:            0 packets          0 bytes

 

Total sessions found: 1

Table 2 Command output

Field	Description
Initiator	Session information about the initiator.
Responder	Session information about the responder.
Source IP/port	Source IPv6 address and port number.
Destination IP/port	Destination IPv6 address and port number.
VPN instance/VLAN ID/Inline ID	This field is not supported in the current software version. ·     VPN instance—MPLS L3VPN instance to which the session belongs. ·     VLAN ID—ID of the VLAN to which the session belongs for Layer 2 forwarding. ·     Inline ID—ID of the INLINE to which the session belongs for Layer 2 forwarding. If no settings are specified, this field displays slash-separated hyphens (-/-/-).
Protocol	Transport layer protocol type: DCCP, ICMPv6, Raw IP, SCTP, TCP, UDP, or UDP-Lite. The number after the protocol is the protocol number.
Inbound interface	Input interface.
Source security zone	Security zone to which the input interface belongs. If the input interface does not belong to any security zone, this field displays a hyphen (-).
State	NAT66 session state.
Application	Application layer protocol type, such as FTP and DNS. This field displays OTHER for the protocol types identified by non-well-known ports.
Rule ID	ID of the security policy rule.
Rule name	Name of the security policy rule.
Start time	Time when the session starts.
TTL	Remaining lifetime of the NAT66 session, in seconds.
Initiator->Responder	Number of packets and packet bytes from the initiator to the responder.
Responder->Initiator	Number of packets and packet bytes from the responder to the initiator.
Total sessions found	Total number of sessions.

 

Related commands

reset nat66 session

display nat66 statistics

Use display nat66 statistics to display NAT66 statistics.

Syntax

display nat66 statistics [ summary ] [ slot slot-number  ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

summary: Displays NAT66 statistics summary. If you do not specify this keyword, the command displays detailed NAT66 statistics.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays NAT66 statistics for all cards.

Examples

# Display detailed NAT66 statistics.

<Sysname> display nat66 statistics

Slot 1:

  Total session entries: 100

Table 3 Command output

Field	Description
Total session entries	Number of NAT66 session entries.

 

# Display NAT66 statistics summary.

<Sysname> display nat66 statistics summary

Slot Sessions

1    100

Table 4 Command output

Field	Description
Sessions	Number of NAT66 session entries.

 

nat66 prefix destination

Use nat66 prefix destination to configure an IPv6 prefix mapping for IPv6 destination address translation.

Use undo nat66 prefix destination to remove an IPv6 prefix mapping for IPv6 destination address translation.

Syntax

nat66 prefix destination original-ipv6-prefix prefix-length [ protocol pro-type [ global-port ] ] translated-ipv6-prefix prefix-length [ local-port ]

undo nat66 prefix destination original-ipv6-prefix prefix-length [ protocol pro-type [ global-port ] ] translated-ipv6-prefix prefix-length [ local-port ]

Default

No IPv6 prefix mappings are configured for IPv6 destination address translation.

Views

Interface view

Predefined user roles

network-admin

Parameters

original-ipv6-prefix: Specifies the original IPv6 prefix. For IPv6 destination address translation, specify the external prefix.

protocol pro-type: Specifies a protocol type. If you do not specify a protocol type, the command applies to packets of all protocols. The protocol type format can be one of the following:

·     A number in the range of 1 to 255.

·     A protocol name of ipv6-icmp, tcp, or udp.

global-port: Specifies a public port number for the internal server, in the range of 1 to 65535.

translated-ipv6-prefix: Specifies the translated IPv6 prefix. For IPv6 destination address translation, specify the internal prefix.

prefix-length: Specifies a prefix length, in the range of 1 to 128.

local-port: Specifies a private port number for the internal server, in the range of 1 to 65535.

Usage guidelines

To allow external users to access internal servers (such as Web or FTP server), configure IPv6 destination prefix mappings on the interface connected to the external network.

When you configure IPv6 destination prefix mappings, follow these restrictions and guidelines:

·     The prefix length before and after NAT66 must be the same.

·     On one interface, the mapping between an external prefix and an internal prefix must be unique.

·     On different interfaces, one external prefix cannot be mapped to different internal prefixes.

·     The external IPv6 prefix of the internal server cannot be the same as the external prefix of the NAT66 device or the prefix of external hosts that access the internal server.

·     The command does not support modifying an existing IPv6 prefix mapping. To modify it, first execute the undo nat66 prefix destination command to remove the mapping, and then configure the new one.

Examples

# On GigabitEthernet 0/0/1, configure an IPv6 destination prefix mapping to translate IPv6 prefix 2001::/64 to IPv6 prefix 2101::/64.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] nat66 prefix destination 2001:: 64 2101:: 64

# On GigabitEthernet 0/0/1, configure an IPv6 destination prefix mapping to translate IPv6 prefix 2001::/64 and port 64 to IPv6 prefix 2101::/64 and port 200 for packets destined for the internal FTP server.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] nat66 prefix destination 2001:: 64 protocol tcp 64 2101:: 64 200

Related commands

display nat66 all

nat66 prefix source

Use nat66 prefix source to configure an IPv6 prefix mapping for IPv6 source address translation.

Use undo nat66 prefix source to remove an IPv6 prefix mapping for IPv6 source address translation.

Syntax

nat66 prefix source original-ipv6-prefix prefix-length translated-ipv6-prefix prefix-length [ pat ]

undo nat66 prefix source original-ipv6-prefix prefix-length translated-ipv6-prefix prefix-length

Default

No IPv6 prefix mappings are configured for IPv6 source address translation.

Views   

Interface view

Predefined user roles

network-admin

Parameters

original-ipv6-prefix: Specifies the original IPv6 prefix. For IPv6 source address translation, specify the internal prefix.

translated-ipv6-prefix: Specifies the translated IPv6 prefix. For IPv6 source address translation, specify the external prefix.

prefix-length: Specifies a prefix length, in the range of 1 to 128.

pat: Uses the PAT mode for address translation. In this mode, port information is translated in addtion to address translation. If you do not specify this keyword, the device does not translate port information.

Usage guidelines

NAT66 source address translation is applicable to the following scenarios:

·     Single internal and external network—The NAT66 device is connected to an internal network and an external network. Hosts in the internal network uses locally routed IPv6 prefixes. When an internal host sends packets to access the external network, the NAT66 device translates the source IPv6 address prefix in the packets to a global unicast address prefix.

·     Redundancy and load sharing—Multiple NAT66 devices are deployed between two IPv6 networks and they use ECMPs for load sharing. To allow any NAT66 device to process IPv6 traffic among different sites, configure the same source prefix mappings on these NAT66 devices.

·     Multihoming—In a multihomed network, NAT66 devices are connected to an internal network and multiple external networks. One internal prefix is mapped to different external prefixes on the NAT66 devices, so that one internal address can be translated to multiple external addresses.

When you configure source prefix mappings, follow these restrictions and guidelines:

·     Source prefix mappings are typically configured on the interface connected to the external network.

·     The prefix length before and after NAT66 in a mapping must be the same if this mapping does not support port translation.

·     On one interface, the mapping between an internal prefix and an external prefix must be unique.

·     On different interfaces, different internal prefixes cannot be mapped to the same external prefix.

·     The source IPv6 prefix after translation cannot be the same as the external prefix of the NAT66 device or the prefix of the external destination address.

·     The command does not support modifying an existing prefix mapping. To modify it, first execute the undo nat66 prefix source command to remove the mapping, and then configure the new one.

Examples

# On GigabitEthernet 0/0/1, configure an IPv6 source prefix mapping to translate IPv6 prefix FD9C:58ED:7D73:2::/64 to 2101::/64.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] nat66 prefix source fd9C:58ed:7d73:2:: 64 2101:: 64

# On GigabitEthernet 0/0/1, configure an IPv6 source prefix mapping in PAT mode to translate IPv6 prefix FD9C:58ED:7D73:2::/64 to 2101::/64.

<Sysname> system-view

[Sysname] interface gigabitethernet 0/0/1

[Sysname-GigabitEthernet0/0/1] nat66 prefix source fd9C:58ed:7d73:2:: 64 2101:: 64 pat

Related commands

display nat66 all

reset nat66 session

Use reset nat66 session to delete NAT66 sessions.

Syntax

reset nat66 session [ slot slot-number ]

Views

User view

Predefined user roles

network-admin

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command deletes NAT66 sessions for all cards.

Examples

# Delete NAT66 sessions for the specified slot.

<Sysname> reset nat66 session slot 1

Related commands

display nat66 session