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Configuring NAT Pools for the Packet Gateway

To configure a network address translation (NAT) pool that is exclusive to the packet gateway feature, include the pgcp statement at the [edit services nat pool pool-name] hierarchy level.



[edit services nat pool pool-name]

pgcp {
hint hint-string;

remotely-controlled;

ports-per-session ports;

transport;
}

By default, the packet gateway chooses the NAT pool using the value of the interface field in the virtual interface. You can configure the packet gateway to choose the NAT pool using the hint value in the Direction field of a nonstandard termination ID. To configure a hint that the packet gateway matches with the hint in the Direction field, include the hint statement and specify a specific hint value or a list of hint values.

You can configure separate NAT pools that can be controlled by either the PG or the PGC. By default, the PG controls the addresses and ports in a pool. To configure the addresses and ports in a NAT pool to be explicitly controlled by the PGC, include the remotely-controlled statement. The PGC reserves the addresses and ports when it requests specific local NAT bindings for remote addresses.

To configure the number of ports allocated to voice and video flows on the MultiServices PIC, include the ports-per-session statement. By default, the number of available ports is 2. This value is useful when one port is allocated for Real-Time Transport Protocol (RTP), and the accompanying Real-Time Control Protocol (RTCP) flow uses the other port. To support the extra ports required for combined voice and video flows, you can specify 4 ports.

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