Administrator Guide

Version Description
8.3.19.0 Introduced on the S4820T.
8.3.7.0 Introduced on the S4810.
8.4.2.1 Introduced on the C-Series and S-Series.
8.4.1.0 Introduced on the E-Series.
Usage
Information
You can separately configure both IPv4 and IPv6 domain name servers.
In a dual stack setup, the system sends both A (request for IPv4 — RFC 1035) and AAAA (request for
IPv6 — RFC 3596) record requests to a DNS server even if only the ip name-server command is
configured.
ipv6 nd dad attempts
To perform duplicate address detection (DAD) on an interface, configure the number of neighbor solicitation messages that are
sent.
Syntax
ipv6 nd dad attempts {number of attempts}
To restore the default value, use the no ipv6 nd dad attempts command.
Parameters
number of
attempts
Enter the number of attempts to be made to detect a duplicate address. The range
is from 0 to 15. Setting the value to 0 disables DAD on the interface.
Default 3 attempts
Command Modes INTERFACE (management interface only)
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant DellEMC
Networking OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S3148.
9.8(2.0) Introduced on the S3100 series.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
ipv6 nd disable-reachable-timer
Keep the learnt neighbor discovery entries stateless so that the entries do not time out.
Syntax
ipv6 nd disable-reachable-timer
To restore to default, use the no ipv6 nd disable-reachable-timer command.
Default Disabled
Command Modes INTERFACE
IPv6 Basics 789