The ipv6 nd miss anti-attack rate-limit command configures the rate at which neighbor discovery (ND) Miss messages are sent, that is, the number of ND Miss messages allowed to be processed per second.
The undo ipv6 nd miss anti-attack rate-limit command restores the default configuration.
By default, 550 ND Miss messages are sent per second.
Usage Scenario
When a device sends an IPv6 packet, if the MAC address corresponding to the destination IPv6 address of the IPv6 packet does not exist, an ND Miss message is generated. This consumes device resources and affects the processing of other services. To resolve this problem, run the ipv6 nd miss anti-attack rate-limit command to configure the rate at which ND Miss messages are sent. With this configuration, the device processes only the allowed number of ND Miss messages within a specified period to ensure normal service running.
Configuration Impact
After the rate at which ND Miss messages are sent is limited, a device collects statistics about the number of received ND Miss messages. If the number of ND Miss messages received within a specified period exceeds the upper limit, the device discards the excess ND Miss messages.