Statement introduced in Junos OS Release 19.4R1.
Use the extended-sequence-number option to enable ESN support. ESN allows IPsec to use 64-bit sequence numbers for the sequence number. If ESN is not enabled, 32-bit sequence number will be used by default. Ensure ESN is not enabled when anti-replay is disabled.
Required Privilege Level
security—To view this statement in the configuration.
security-control—To add this statement to the configuration.