Ipv6 nd dad attempts – Dell PowerEdge VRTX User Manual

Page 686

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IPv6 Commands

FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\CLI Folders\Dell Plasma-ARC

2+3\new_system_mifs_ARC2_latest\IPv6_Router.fm

D E L L C O N F ID E N T IA L – P R E L IM I N A RY 4 / 3 /1 4 - FO R P R O O F O N LY

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:

console(config)# ipv6 icmp error-interval 50 20

ipv6 nd dad attempts

Use the ipv6 nd dad attempts command in Interface Configuration mode to

configure the number of consecutive neighbor solicitation messages that are

sent on an interface while duplicate address detection is performed on the

Unicast IPv6 addresses of the interface.
To return the number of messages to the default value, use the no form of

this command.

Syntax

ipv6 nd dad attempts

value

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