Cisco 300 Series User Manual

IPv6 Commands
OL-32830-01 Command Line Interface Reference Guide 614
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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 be sent. When
the bucket is empty of tokens, IPv6 ICMP error messages are not sent until a new
token is placed in the bucket.
Average Packets Per Second = (1000/
milliseconds ) * bucketsize .
To disable ICMP rate limiting, set the
milliseconds argument to zero.
Example
The following example shows an interval of 50 milliseconds and a bucket size of
20 tokens being configured for IPv6 ICMP error messages:
switchxxxxxx(config)# ipv6 icmp error-interval 50 20

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48