The command show security nat source persistent-nat-table all provides a comprehensive view of all entries in the persistent NAT table, enabling administrators to monitor and manage resource exhaustion. Refer to Juniper NAT Monitoring Guide for more.
In Junos OS, when persistent NAT is configured, a binding table is created to keep track of NAT sessions and ensure that specific hosts are allowed to initiate sessions back to internal hosts. To check if the persistent NAT binding table is full or exhausted, the correct command must display the entire table.
Correct Command (D):
The command show security nat source persistent-nat-table all will display the entire persistent NAT binding table. This allows you to check whether the table is exhausted or if there is space available for new persistent NAT sessions.
Incorrect Options:
Option A: The command show security nat source persistent-nat-table summary provides a summary view but does not give detailed insights into whether the table is exhausted.
Option B and Option C: These commands deal with general NAT source summaries or pools, which are not related specifically to persistent NAT bindings.
Juniper References:
Juniper Persistent NAT Documentation: Describes the persistent NAT binding table and the commands used to monitor its status.
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