ipv6 nd ra managed-config-flag

Description

Controls the M flag setting in RAs the router transmits on the current interface. Enable the M flag to indicate that hosts can obtain IP address through DHCPv6. The M flag is disabled by default.

The no form of this command turns off (disables) the M flag.

Command context

config-if

Authority

Administrators or local user group members with execution rights for this command.

Usage

• Enabling the M flag directs hosts to acquire their IPv6 addressing for the current interface from a DHCPv6 server.

• When the M-bit is enabled, receiving hosts ignore the O flag setting, which is configured using the command ipv6 nd ra other-config-flag.

• When the M-bit is disabled (the default), receiving hosts expect to receive their IPv6 addresses from RA.

  M flag	O flag	Description
  0	0	Indicates that no information is available via DHCPv6.
  0	1	Indicates that other configuration information is available via DHCPv6. Examples of such information are DNS-related information or information on other servers within the network.
  1	0	Indicates that addresses are available via Dynamic Host Configuration Protocol (DHCPv6).
  1	1	If the M flag is set, the O flag is redundant and can be ignored because DHCPv6 will return all available configuration information.

Examples

switch(config)# interface 1/1/1
switch(config-if)# ipv6 nd ra managed-config-flag