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Configuring a NAT Pool Selected Based on Transport Protocol

To configure a NAT pool selected based on the transport protocol:

  1. Create a NAT pool, and specify a name for the pool.
    [edit services]user@host# edit nat pool bgf-pool
  2. Configure an address range for the pool.
    [edit services nat pool bgf-pool]user@host# set address-range low 10.10.20.100 high 10.10.30.100
  3. Specify that the NAT pool is used exclusively by the BGF.
    [edit services nat pool bgf-pool]user@host# set pgcp
  4. Specify one or more transport protocols that must match the transport protocol in the media descriptor of add or modify requests from the gateway controller.
    [edit services nat pool bgf-pool]user@host# set pgcp transport [rtp-avp udp]
  5. Specify that the port is automatically assigned.
    [edit services nat pool bgf-pool]user@host# set port automatic
  6. Configure the number of ports allocated to voice and video flows on the MultiServices PIC or MS-DPC. 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. By default, two ports are available. To support the extra ports required for combined voice and video flows, you can specify four ports.
    [edit services nat pool bgf-pool]user@host# set pgcp ports-per-session 4

Published: 2010-04-13

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