preserve-range (Source NAT Next Gen Services)
Statement introduced in Junos OS Release 19.3R2 on MX Series routers (MX240, MX480 and MX960) running Next Gen Services with the MX-SPC3 services card.
For source NAT with port translation, except for deterministic NAT, assign a port within the same range as the incoming port—either 0 through 1023 or 1024 through 65,535. This feature is not available if you configure port block allocation.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.