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Configure Port Block Allocation Size

 

You can configure secured port block allocation, which allocates blocks of ports to a NAT subscriber. With port block allocation, we generate one syslog log per set of ports allocated for a subscriber. Use this procedure to configure the port block allocation size.

Before you begin:

  1. Configure the IPv4 addresses.
  2. Configure the starting and ending port value.
  3. Configure the port block allocation size.

    If you configure the port block allocation size lesser than 8 on SRX5400, SRX5600, and SRX5800, the system displays the warning message warning: To save system memory, the block size is recommended to be no less than 8.

    Starting in Junos OS Release 20.3R1, you can configure the port block allocation size on SRX300, SRX320, SRX340, SRX345, SRX380, SRX550HM, SRX1500, SRX4100, SRX4200, and SRX4600. To save system memory, the recommended port block allocation size is 64. If you configure the port block allocation size lesser than 64, the system displays the warning message warning: To save system memory, the block size is recommended to be no less than 64.

  4. Configure the interim log interval time.
  5. Configure the last port block timeout value.
  6. Commit the configuration
  7. Verify the output value for configured block-size.