Configure Address and Port Information

The pool statement defines the address and port used for network address translation. To configure the address information, include the pool statement at the [edit services nat] hierarchy level:

[edit services nat]

pool nat-pool-name {

    address (address | address-range low minimum-value high maximum-value);

    port (automatic | range low minimum-value high maximum-value);

}

You can specify either a single specific address, a prefix, or an address range. To specify translated addresses, configure the pool statement with an identifier and include the address statement with the address, prefix, or range used in network address translation. You must configure either a specific address value or the address-range boundaries:

• If you specify a specific address, it is assumed the translated address belongs to the inet.0 routing instance. The following addresses cannot be used:

• 0.0.0.0./32
• 127.0.0.0/8 (loopback)
• 224.0.0.0./4 (multicast)
• 240.0.0.0/4 (reserved)
• 255.255.255.255 (broadcast)

• To specify an address range, include the address address-range low minimum-value high maximum-value statement at the [edit services nat pool nat-pool-name] hierarchy level. The low value must be a lower number than the high value. Address ranges are limited to a maximum of 32 addresses.
• The port statement specifies port assignment for the translated addresses. To configure automatic assignment of ports, include the port automatic statement at the [edit services nat pool nat-pool-name] hierarchy level. To configure a specific range of port numbers, include the port range low minimum-value high maximum-value statement at the [edit services nat pool nat-pool-name] hierarchy level.
  

  NOTE: When you include a NAT configuration that changes IP addresses, it might affect forwarding-path features elsewhere in your router configuration, such as source class usage (SCU), destination class usage (DCU), filter-based forwarding, or other features that target specific IP addresses or prefixes. NAT configuration might also affect routing protocols operation, because the protocol peering, neighbor, and interface addresses can be altered when routing protocols packets transit the AS PIC.