By default, micro-isolation CAR is enabled for IS-IS, implementing micro-isolation protection for IS-IS packets based on interfaces and destination MAC addresses to protect session establishment. When IS-IS packets encounter a traffic burst, a large number of packets of non-IS-IS neighbors may preempt interface bandwidth resources. In the case of an attack, a large number of invalid packets sent to other MAC addresses may preempt the bandwidth. Therefore, you are advised not to disable this function.
The system view is displayed.
Micro-isolation CAR parameters are configured for IS-IS.
In normal cases, you are advised to use the default values of these parameters. pir-value must be greater than or equal to cir-value, and pbs-value must be greater than or equal to cbs-value.
Micro-isolation CAR is disabled for IS-IS.
By default, micro-isolation CAR is enabled for IS-IS. To disable this function, run the micro-isolation protocol-car isis disable command. If this function is disabled, micro-isolation protection is no longer implemented for IS-IS packets based on interfaces and destination MAC addresses. In normal cases, you are advised to keep micro-isolation CAR enabled for IS-IS.
The configuration is committed.