The configuration of Static NAT-PT In MSR Series

The configuration of Static NAT-PT In MSR Series

 

 

Keywords: NAT-PT;MSR;IPv6

I            Requirement for the diagram

Based on NAT-PT, Using static NAT-PT address transform, for PC_A which with IPv6 address can communicate with PC_B which with IPv4 address.

Device List: 1 MSR; 2 PC;

CMW Version: Version 5.20, Beta 1106

II          Network topology

Figure 1 static NAT-PT

Device	Interface	IPv4 address	Interface	IPv6 address
RTA	E0/0	3001::1/64	E0/1	4.0.0.1/24
NAT-PTprefix		1000::
PC_A	Adapter	3001::2/64	Maped address	5.0.0.1
PC_B	Adapter	4.0.0.2/24	Maped address	1000::0001

III        Steps of configuration

1) Connecting device as showed above;

2) Config as below:

RTA:

//Configuring interface address, enable NAT-PT

[RTA]ipv6

[RTA]interface Ethernet0/0

[RTA-Ethernet0/0]ipv6  address  3001::1/64

[RTA-Ethernet0/0]natpt  enable

[RTA-Ethernet0/0]quit

 

[RTA]interface Ethernet0/1

[RTA-Ethernet0/1] ip address 4.0.0.1 24

[RTA-Ethernet0/1]natpt  enable

[RTA-Ethernet0/1]quit

[RTA] natpt prefix 1000::           // Configuring NAT-PT prefix

//Mapping IPv4 address to indirect IPv6 address

//Make sure do not at the same subnet with 3001::

[RTA] natpt v4bound static 4.0.0.2 1000::0001

//Mapping IPv6 address to indirect IPv4 address

//Make sure do not at the same subnet with 4.0.0.0/24

[RTA] natpt v6bound static 3001::0002 5.0.0.1

 

//Add default routing on PC_A with the next hop to router interface. In command below, 5 is the adapter index of PC_A

C:\>ipv6 rtu ::/0 5/3001::1

3．Testing Result:

Method 1：

From PC_B ping the 5.0.0.1（IPv6 host mapped address）, the result is below：

C:\>ping 5.0.0.1

Pinging 5.0.0.1 with 32 bytes of data:

Reply from 5.0.0.1: bytes=32 time=2ms TTL=127

Reply from 5.0.0.1: bytes=32 time=2ms TTL=127

Reply from 5.0.0.1: bytes=32 time=2ms TTL=127

Reply from 5.0.0.1: bytes=32 time=2ms TTL=127

Ping statistics for 5.0.0.1:

    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 2ms, Maximum = 2ms, Average = 2ms

Similiarly，From PC_A ping the address that PC_B mapped IPv6, can be reachable either.Here, the static NAT-PT has configed success.

Method 2：

We can check NAT-PT session on the router：

1) Ping every indirected address of one PC, reachable;

2) Checking the session table now:

[RTB]dis natpt sess all

           NATPT Session Info:

               No    IPV6Source          IPV4Source            Pro

                          IPV6Destination    IPV4Destination

               1     3001::0002^   0    5.0.0.1^   0         ICMP

                         1000::0001^   0    4.0.0.2^   0

From the table above we can see: address 3001::2 mapped to 5.0.0.1, and address 4.0.0.2 mapped to 1000::1

IV       Key notes in the configuration

1) All the indirect address should not at the same subnet with target address;

2)  When check the session info, it is a dynamic info, and will changing by the time. So every time, you should ping first.