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Configuring Overloading of Stub Networks

Starting in Junos OS Release 18.3R1, new configuration options external-prefixes and internal-prefixes are available at the [edit protocols isis overload] hierarchy level to control overload of internal prefixes, external prefixes or both internal and external prefixes as per network requirement. The user can choose not to receive any traffic for internal and external prefixes advertised by the overloaded IS-IS routers unless the router is the only node in the network which hosts the prefix. In previous Junos OS releases, overloaded IS-IS routers continued to receive traffic for prefixes even if the user did not want to receive traffic for directly connected prefixes.