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Hierarchy Level


Specify the ACK number of the packet. This number identifies the next sequence number; the ACK flag must be set to activate this field.


  • match (equal | greater-than | less-than | not-equal)—Match an operand.

  • value acknowledgement-number—Match the ACK number of the packet.

  • Range: 0 through 4,294,967,295

Required Privilege Level

security—To view this statement in the configuration.

security-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 9.3.