Technical data

10 ServerIron ADX NAT64 Configuration Guide
53-1002444-02
Basic stateful NAT64 configuration
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DRAFT: BROCADE CONFIDENTIAL
To specify an IPv6 prefix, enter a command such as the following:
ServerIron ADX(config)# nat64 ipv6-prefix 2001:db8:8000::/96
Syntax: [no] nat64 ipv6-prefix <prefix/length> [inject-static-route ]
NOTE
A maximum of eight NAT64 IPv6 prefixes can be configured.
The <prefix/length> variable specifies the NAT64 IPv6 prefix that will be used by the ServerIron
ADX when operating as a NAT64 gateway. Currently, the only supported prefix length is 96.
The inject-static-route option is used only in advanced configurations. For advanced configurations,
refer to “Configuring stateful IPv6 prefixes with route injection” on page 12.
Configuring basic IPv4 NAT address pools
The IPv4 NAT address pool specifies a range of IPv4 addresses that the NAT64 gateway can use to
represent an IPv6 client to the IPv4 network.
During stateful NAT64 translation, the NAT64 gateway substitutes an IPv4 address selected from
the IPv4 NAT address pool for the actual IPv6 source address of the IPv6 client.
To configure an IPv4 NAT address pool, enter a command such as the following:
ServerIron ADX(config)# nat64 pool nat64-zone1 201.1.1.1 201.1.1.20 prefix-length
24
In the example, an IPv4 NAT address pool named “nat64-zone1” is created on the NAT64 gateway
consisting of addresses between 201.1.1.1 and 201.1.1.20.
Syntax: [no] nat64 pool <pool-name> <start-ipaddress> <end-ipaddress> prefix-length <prefix-
length> [ port-pool-range { 1 | 2 } ] [ inject-static-route ]
NOTE
A maximum of 192 addresses can be configured for the IPv4 NAT address pools.
The <pool-name> variable specifies the name of the IPv4 NAT address pool. The name can be up to
255 characters in length.
The <start-ipaddress> variable specifies the IPv4 address at the beginning of the NAT64 pool
range. This value should be the lowest numbered IPv4 address in the range.
The <end-ipaddress> variable specifies the IPv4 address at the end of the IPv4 NAT address pool
range. This value should be the highest numbered IPv4 address in the range.
The prefix-length option uses the CIDR prefix value specified by the <prefix-length> variable to
distinguish the portion of the IPv4 address that will be used for all IPv4 addresses in the pool. For
example, you can use “24” for the length of the CIDR prefix.
The port-pool-range option enables NAT64 redundancy. A value of 2 specifies a higher priority of
the NAT IP address than a value of 1. A value of 2 also indicates that source ports allocated for the
NAT IP address are from the higher range.
The inject-static-route option is used only in advanced configurations. For advanced configurations,
refer to “Configuring IPv4 NAT address pools with route injection” on page 13.