Users Guide

Usage
Information
● An OS10 switch sends a neighbor solicitation message to determine if an autoconfigured IPv6 unicast
link-local address is unique before assigning it to an interface. If the process of duplicate address
discovery (DAD) detects a duplicate address in the network, the link-local address does not configure.
Other IPv6 addresses are still active on the interface.
● By default, DAD does not disable IPv6 if a duplicate link-local address is detected in the network. To
disable IPv6 on an interface when a duplicate link-local address is detected, use the ipv6 nd dad
disable-ipv6-on-failure command.
Example: Disable
DAD
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ipv6 nd dad disable
Example: Enable
DAD on link-local
address
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# ipv6 nd dad disable-ipv6-on-dad-failure
Supported
Releases
10.4.0E(R1) or later
ipv6 nd hop-limit
Sets the hop limit advertised in RA messages and included in IPv6 data packets sent by the router.
Syntax
ipv6 nd hop-limit hops
Parameters
● hop-limit hops — Enter the maximum number of hops allowed for RA messages, from 0 to 255.
Defaults 64 hops
Command Mode INTERFACE
Usage
Information
The configured hop limit is advertised in RA messages and included in IPv6 data packets sent by the
router. 0 indicates that no hop limit is specified by the router.
Example
OS10(config)# interface ethernet 1/2/3
OS10(conf-if-eth1/2/3)# ipv6 nd hop-limit 100
Supported
Releases
10.4.0E(R1) or later
ipv6 nd managed-config-flag
Sends RA messages that tell hosts to use stateful address autoconfiguration, such as DHCPv6, to obtain IPv6 addresses.
Syntax
ipv6 nd managed-config-flag
Parameters None
Defaults Not configured
Command Mode INTERFACE
Usage
Information
The no version of this command disables the managed-config-flag option in RA messages.
Example
OS10(config)# interface ethernet 1/2/3
OS10(conf-if-eth1/2/3)# ipv6 nd managed-config-flag
Supported
Releases
10.4.0E(R1) or later
Layer 3 725