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request access-security router-advertisement-guard-block



Initiate the blocking state on an interface or range of interfaces for stateful IPv6 Router Advertisement (RA) guard. Stateful RA guard learns about legitimate senders of RA messages and stores this information in order to validate senders of subsequent RA messages. For example, an interface that is in the learning state and receives RA messages that are not sent from valid IPv6 routers will dynamically transition to the blocking state. While the interface is in blocking state, all RA messages received on that interface are dropped.

You can override the dynamic state transitions by requesting the blocking state on an interface. If you issue the request for the blocking state on an interface, the interface will remain in forwarding state until either the learning or forwarding state is requested on that interface.


interface interface-name

Initiate the blocking state on the specified interface.

Required Privilege Level

interface—To view this statement in the configuration.

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

Output Fields

This command produces no output.

Release Information

Command introduced in Junos OS Release 15.1X53-D55.