beautypg.com

Ipv6 nd other- config-flag, Ipv6 nd other-config-flag – LevelOne GTL-2691 User Manual

Page 1430

background image

C

HAPTER

48

| IP Interface Commands

IPv6 Interface

– 1430 –

The

ipv6 nd other-config-flag

command is used to tell hosts that they

should use stateful autoconfiguration to get other non-address

parameters (such as DNS server addresses) from DHCPv6 servers.

The absence of the “managed-address configuration” flag tells hosts to

use only stateless address autoconfiguration (based on IPv6 prefixes

found in router advertisements).

The “managed address configuration” flag is only a suggestion to

attached hosts. They may still use stateful and/or stateless address

autoconfiguration. If hosts must be forced to use DHCPv6 for security

reasons, ensure that no route prefixes are sent in router

advertisements.

E

XAMPLE

The following tells hosts to use stateful autoconfiguration to obtain

addresses:

Console(config)#interface vlan 1

Console(config)#ipv6 nd managed-config-flag

Console(config)#

ipv6 nd other-

config-flag

This command configures IPv6 router advertisements to indicate to

attached hosts that they can obtain stateful autoconfiguration information

other than addresses. Use the no form to clear this flag from router

advertisements.

S

YNTAX

[no] ipv6 nd other-config-flag

D

EFAULT

S

ETTING

Disabled

C

OMMAND

M

ODE

Interface Configuration (VLAN)

C

OMMAND

U

SAGE

The “other-stateful-configuration” flag tells hosts that they should use

stateful autoconfiguration to obtain information other than addresses

from a DHCPv6 server.

Some hosts interpret the “other stateful configuration” flag to indicate

that they should use stateless address autoconfiguration to get IPv6

address (based on the IPv6 prefixes found in router advertisements)

and stateful autoconfiguration to get other non-address parameters

from DHCPv6 servers. In this case, the absence of both the “managed

address configuration” flag and the “other stateful configuration” flag is

interpreted to mean that they should use only stateless

autoconfiguration to obtain addresses.