The ipv6 nd ns send rate-limit command configures the rate limit of sending NS messages for address resolution or parsing.
The undo ipv6 nd ns send rate-limit command restores the default configuration.
By default, a maximum of 550 NS messages for address resolution or probing can be sent per second.
Usage Scenario
If the peer device is limited by the capability of receiving NS messages or the local device is limited by the capability of processing NA response messages, run the ipv6 nd ns send rate-limit command to configure the rate limit of sending NS messages for address resolution or parsing. This prevents a failure to learn ND entries or incorrect deletion of ND entries due to discarding of NA packets.
Configuration Impact
if the rate limit of sending NS messages is a small value, the address resolution of a large number of neighbor entries becomes slow.
Precautions
Using the default rate limit value is recommended. Exercise caution while using this command to configure the rate limit of sending NS messages for address resolution or parsing.