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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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Junos CLI Reference
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stateless

date_range 20-Nov-23
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Syntax

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(stateful | stateless);

Hierarchy Level

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[edit forwarding-options access-security router-advertisement-guard interface  (interface-name | interface-range-name)]
[edit forwarding-options access-security router-advertisement-guard vlans  vlan-name]

Description

Configure stateless IPv6 Router Advertisement (RA) guard. In an IPv6 deployment, RA guard protects against rogue RA messages generated either maliciously or unintentionally by unauthorized or improperly configured routers connecting to the network segment. An RA guard policy is used to validate incoming RA messages on the basis of whether they match the conditions defined in a policy.

You can configure RA guard to be stateless or stateful. If stateless RA guard is enabled, the switch examines incoming RA messages and filters each message on the basis of whether it matches the conditions configured in the policy. After the switch has validated the content of the RA message, it forwards the RA message to its destination; otherwise, the RA message is dropped. For example, an interface can be statically configured to forward RA messages only from predefined sources.

You can enable stateless RA guard on an interface or on a VLAN.

Default

RA guard is stateless by default.

Required Privilege Level

interface—To view this statement in the configuration.

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

Release Information

Statement introduced in Junos OS Release 15.1X53-D55.

Related Documentation

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