Reference Guide

IPv6 Commands 693
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ipv6 icmp error-interval
Use the ipv6 icmp error-interval command in Global Configuration mode to
configure the interval and bucket size for IPv6 ICMP error messages. To
return the interval to its default setting, use the no form of this command.
Syntax
ipv6 icmp error-interval milliseconds [ bucketsize ]
no ipv6 icmp error-interval
Parameters
• milliseconds —Time interval between tokens being placed in the bucket.
Each token represents a single ICMP error message. The acceptable range
is from 0 to 2147483647. A value of 0 disables ICMP rate limiting.
•
bucketsize —Maximum number of tokens stored in the bucket. The
acceptable range is from 1 to 200.
Default Configuration
The default interval is 100ms and the default bucketsize is 10 i.e. 100 ICMP
error messages per second.
Command Mode
Global Configuration mode
User Guidelines
Use this command to limit the rate at which IPv6 ICMP error messages are
sent. A token bucket algorithm is used with one token representing one IPv6
ICMP error message. Tokens are placed in the virtual bucket at a specified
interval until the maximum number of tokens allowed in the bucket is
reached.
The
milliseconds argument specifies the time interval between tokens
arriving in the bucket. The optional
bucketsize argument is used to define the
maximum number of tokens allowed in the bucket. Tokens are removed from
the bucket when IPv6 ICMP error messages are sent, which means that if the
bucketsize is set to 20, a rapid succession of 20 IPv6 ICMP error messages can