Configuring rate limit for ICMP error messages
About the token bucket algorithm
To avoid sending excessive ICMP error messages within a short period that might cause network congestion, you can limit the rate at which ICMP error messages are sent. A token bucket algorithm is used with one token representing one ICMP error message.
A token is placed in the bucket at intervals until the maximum number of tokens that the bucket can hold is reached.
A token is removed from the bucket when an ICMP error message is sent. When the bucket is empty, ICMP error messages are not sent until a new token is placed in the bucket.
Procedure
Enter system view.
system-view
Set the bucket size and the interval for tokens to arrive in the bucket for ICMP error messages.
ip icmp error-interval interval [ bucketsize ]
By default, the bucket allows a maximum of 10 tokens. A token is placed in the bucket at an interval of 100 milliseconds.
To disable the ICMP rate limit, set the interval to 0 milliseconds.