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187 lines
6.8 KiB
Plaintext
187 lines
6.8 KiB
Plaintext
@node IPv6 Support
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@chapter IPv6 Support
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Quagga fully supports IPv6 routing. As described so far, Quagga supports
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RIPng, OSPFv3, and BGP-4+. You can give IPv6 addresses to an interface
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and configure static IPv6 routing information. Quagga IPv6 also provides
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automatic address configuration via a feature called @code{address
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auto configuration}. To do it, the router must send router advertisement
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messages to the all nodes that exist on the network.
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Previous versions of Quagga could be built without IPv6 support. This is
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no longer possible.
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@menu
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* Router Advertisement::
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@end menu
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@node Router Advertisement
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@section Router Advertisement
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@deffn {Interface Command} {no ipv6 nd suppress-ra} {}
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Send router advertisment messages.
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@end deffn
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@deffn {Interface Command} {ipv6 nd suppress-ra} {}
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Don't send router advertisment messages.
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@end deffn
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@deffn {Interface Command} {ipv6 nd prefix @var{ipv6prefix} [@var{valid-lifetime}] [@var{preferred-lifetime}] [off-link] [no-autoconfig] [router-address]} {}
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Configuring the IPv6 prefix to include in router advertisements. Several prefix
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specific optional parameters and flags may follow:
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@itemize @bullet
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@item
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@var{valid-lifetime} - the length of time in seconds during what the prefix is
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valid for the purpose of on-link determination. Value @var{infinite} represents
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infinity (i.e. a value of all one bits (@code{0xffffffff})).
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Range: @code{<0-4294967295>} Default: @code{2592000}
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@item
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@var{preferred-lifetime} - the length of time in seconds during what addresses
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generated from the prefix remain preferred. Value @var{infinite} represents
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infinity.
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Range: @code{<0-4294967295>} Default: @code{604800}
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@item
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@var{off-link} - indicates that advertisement makes no statement about on-link or
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off-link properties of the prefix.
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Default: not set, i.e. this prefix can be used for on-link determination.
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@item
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@var{no-autoconfig} - indicates to hosts on the local link that the specified prefix
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cannot be used for IPv6 autoconfiguration.
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Default: not set, i.e. prefix can be used for autoconfiguration.
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@item
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@var{router-address} - indicates to hosts on the local link that the specified
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prefix
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contains a complete IP address by setting R flag.
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Default: not set, i.e. hosts do not assume a complete IP address is placed.
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@end itemize
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@end deffn
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@deffn {Interface Command} {ipv6 nd ra-interval <1-1800>} {}
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@deffnx {Interface Command} {no ipv6 nd ra-interval [<1-1800>]} {}
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The maximum time allowed between sending unsolicited multicast router
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advertisements from the interface, in seconds.
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Default: @code{600}
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@end deffn
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@deffn {Interface Command} {ipv6 nd ra-interval msec <70-1800000>} {}
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@deffnx {Interface Command} {no ipv6 nd ra-interval [msec <70-1800000>]} {}
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The maximum time allowed between sending unsolicited multicast router
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advertisements from the interface, in milliseconds.
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Default: @code{600000}
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@end deffn
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@deffn {Interface Command} {ipv6 nd ra-lifetime <0-9000>} {}
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@deffnx {Interface Command} {no ipv6 nd ra-lifetime [<0-9000>]} {}
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The value to be placed in the Router Lifetime field of router advertisements
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sent from the interface, in seconds. Indicates the usefulness of the router
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as a default router on this interface. Setting the value to zero indicates
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that the router should not be considered a default router on this interface.
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Must be either zero or between value specified with @var{ipv6 nd ra-interval}
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(or default) and 9000 seconds.
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Default: @code{1800}
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@end deffn
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@deffn {Interface Command} {ipv6 nd reachable-time <1-3600000>} {}
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@deffnx {Interface Command} {no ipv6 nd reachable-time [<1-3600000>]} {}
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The value to be placed in the Reachable Time field in the Router Advertisement
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messages sent by the router, in milliseconds. The configured time enables the
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router to detect unavailable neighbors. The value zero means unspecified (by
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this router).
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Default: @code{0}
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@end deffn
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@deffn {Interface Command} {ipv6 nd managed-config-flag} {}
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@deffnx {Interface Command} {no ipv6 nd managed-config-flag} {}
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Set/unset flag in IPv6 router advertisements which indicates to hosts that they
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should use managed (stateful) protocol for addresses autoconfiguration in
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addition to any addresses autoconfigured using stateless address
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autoconfiguration.
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Default: not set
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@end deffn
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@deffn {Interface Command} {ipv6 nd other-config-flag} {}
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@deffnx {Interface Command} {no ipv6 nd other-config-flag} {}
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Set/unset flag in IPv6 router advertisements which indicates to hosts that
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they should use administered (stateful) protocol to obtain autoconfiguration
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information other than addresses.
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Default: not set
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@end deffn
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@deffn {Interface Command} {ipv6 nd home-agent-config-flag} {}
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@deffnx {Interface Command} {no ipv6 nd home-agent-config-flag} {}
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Set/unset flag in IPv6 router advertisements which indicates to hosts that
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the router acts as a Home Agent and includes a Home Agent Option.
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Default: not set
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@end deffn
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@deffn {Interface Command} {ipv6 nd home-agent-preference <0-65535>} {}
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@deffnx {Interface Command} {no ipv6 nd home-agent-preference [<0-65535>]} {}
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The value to be placed in Home Agent Option, when Home Agent config flag is set,
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which indicates to hosts Home Agent preference. The default value of 0 stands
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for the lowest preference possible.
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Default: 0
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@end deffn
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@deffn {Interface Command} {ipv6 nd home-agent-lifetime <0-65520>} {}
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@deffnx {Interface Command} {no ipv6 nd home-agent-lifetime [<0-65520>]} {}
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The value to be placed in Home Agent Option, when Home Agent config flag is set,
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which indicates to hosts Home Agent Lifetime. The default value of 0 means to
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place the current Router Lifetime value.
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Default: 0
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@end deffn
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@deffn {Interface Command} {ipv6 nd adv-interval-option} {}
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@deffnx {Interface Command} {no ipv6 nd adv-interval-option} {}
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Include an Advertisement Interval option which indicates to hosts the maximum time,
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in milliseconds, between successive unsolicited Router Advertisements.
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Default: not set
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@end deffn
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@deffn {Interface Command} {ipv6 nd router-preference (high|medium|low)} {}
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@deffnx {Interface Command} {no ipv6 nd router-preference [(high|medium|low)]} {}
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Set default router preference in IPv6 router advertisements per RFC4191.
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Default: medium
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@end deffn
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@deffn {Interface Command} {ipv6 nd mtu <1-65535>} {}
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@deffnx {Interface Command} {no ipv6 nd mtu [<1-65535>]} {}
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Include an MTU (type 5) option in each RA packet to assist the attached hosts
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in proper interface configuration. The announced value is not verified to be
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consistent with router interface MTU.
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Default: don't advertise any MTU option
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@end deffn
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@example
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@group
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interface eth0
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no ipv6 nd suppress-ra
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ipv6 nd prefix 2001:0DB8:5009::/64
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@end group
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@end example
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For more information see @cite{RFC2462 (IPv6 Stateless Address Autoconfiguration)}
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, @cite{RFC4861 (Neighbor Discovery for IP Version 6 (IPv6))}
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, @cite{RFC6275 (Mobility Support in IPv6)}
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and @cite{RFC4191 (Default Router Preferences and More-Specific Routes)}.
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