Configuration Guide Configuring IPv6
3.4.2 Configuring IPv6 NDP
Configuration Effect
Configure NDP-related attributes, for example, enable IPv6 redirection and DAD.
Notes
RA suppression is enabled on interfaces by default. To configure a device to send RA packets, run the no ipv6 nd
suppress-ra command in interface configuration mode.
Configuration Steps
Enabling IPv6 Redirection on an Interface
(Optional) IPv6 redirection is enabled by default.
To disable IPv6 redirection on an interface, run the no ipv6 redirects command.
Configuring the Number of Consecutive NS Packets Sent During DAD
Optional.
To prevent enabling DAD for IPv6 addresses on an interface or modify the number of consecutive NS packets sent
during DAD, run the ipv6 nd dad attempts command.
Configuring the Reachable Time of a Neighbor
Optional.
To modify the reachable time of a neighbor, run the ipv6 nd reachable-time command.
Configuring the Address Prefix to Be Advertised in an RA Packet
By default, the prefix in an RA packet on an interface is the prefix configured in the ipv6 address command on the
interface.
(Optional) Run the ipv6 nd prefix command to add or delete prefixes and prefix parameters that can be advertised.
Enabling/Disabling RA Suppression on an Interface
Optional.
If a device needs to send RA packets, run the no ipv6 nd suppress-ra command.
Configuring the Maximum Number of Unresolved ND Entries
Optional.
If a large number of unresolved ND entries are generated due to scanning attacks, run the ipv6 nd unresolved
command to restrict the number of unresolved neighbors.
Configuring the Maximum Number of ND Options
Optional.
If a device needs to process more options, run the ipv6 nd max-opt command.
Configuring the Maximum Number of ND Entries Learned on an Interface
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