| @node IPv6 Support |
| @chapter IPv6 Support |
| |
| Quagga fully supports IPv6 routing. As described so far, Quagga supports |
| RIPng, OSPFv3 and BGP-4+. You can give IPv6 addresses to an interface |
| and configure static IPv6 routing information. Quagga IPv6 also provides |
| automatic address configuration via a feature called @code{address |
| auto configuration}. To do it, the router must send router advertisement |
| messages to the all nodes that exist on the network. |
| |
| @menu |
| * Router Advertisement:: |
| @end menu |
| |
| @node Router Advertisement |
| @section Router Advertisement |
| |
| @deffn {Interface Command} {no ipv6 nd suppress-ra} {} |
| Send router advertisment messages. |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd suppress-ra} {} |
| Don't send router advertisment messages. |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd prefix @var{ipv6prefix} [@var{valid-lifetime}] [@var{preferred-lifetime}] [off-link] [no-autoconfig] [router-address]} {} |
| Configuring the IPv6 prefix to include in router advertisements. Several prefix |
| specific optional parameters and flags may follow: |
| @itemize @bullet |
| @item |
| @var{valid-lifetime} - the length of time in seconds during what the prefix is |
| valid for the purpose of on-link determination. Value @var{infinite} represents |
| infinity (i.e. a value of all one bits (@code{0xffffffff})). |
| |
| Range: @code{<0-4294967295>} Default: @code{2592000} |
| |
| @item |
| @var{preferred-lifetime} - the length of time in seconds during what addresses |
| generated from the prefix remain preferred. Value @var{infinite} represents |
| infinity. |
| |
| Range: @code{<0-4294967295>} Default: @code{604800} |
| |
| @item |
| @var{off-link} - indicates that advertisement makes no statement about on-link or |
| off-link properties of the prefix. |
| |
| Default: not set, i.e. this prefix can be used for on-link determination. |
| |
| @item |
| @var{no-autoconfig} - indicates to hosts on the local link that the specified prefix |
| cannot be used for IPv6 autoconfiguration. |
| |
| Default: not set, i.e. prefix can be used for autoconfiguration. |
| |
| @item |
| @var{router-address} - indicates to hosts on the local link that the specified |
| prefix |
| contains a complete IP address by setting R flag. |
| |
| Default: not set, i.e. hosts do not assume a complete IP address is placed. |
| @end itemize |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd ra-interval <1-1800>} {} |
| @deffnx {Interface Command} {no ipv6 nd ra-interval [<1-1800>]} {} |
| The maximum time allowed between sending unsolicited multicast router |
| advertisements from the interface, in seconds. |
| |
| Default: @code{600} |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd ra-interval msec <70-1800000>} {} |
| @deffnx {Interface Command} {no ipv6 nd ra-interval [msec <70-1800000>]} {} |
| The maximum time allowed between sending unsolicited multicast router |
| advertisements from the interface, in milliseconds. |
| |
| Default: @code{600000} |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd ra-lifetime <0-9000>} {} |
| @deffnx {Interface Command} {no ipv6 nd ra-lifetime [<0-9000>]} {} |
| The value to be placed in the Router Lifetime field of router advertisements |
| sent from the interface, in seconds. Indicates the usefulness of the router |
| as a default router on this interface. Setting the value to zero indicates |
| that the router should not be considered a default router on this interface. |
| Must be either zero or between value specified with @var{ipv6 nd ra-interval} |
| (or default) and 9000 seconds. |
| |
| Default: @code{1800} |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd reachable-time <1-3600000>} {} |
| @deffnx {Interface Command} {no ipv6 nd reachable-time [<1-3600000>]} {} |
| The value to be placed in the Reachable Time field in the Router Advertisement |
| messages sent by the router, in milliseconds. The configured time enables the |
| router to detect unavailable neighbors. The value zero means unspecified (by |
| this router). |
| |
| Default: @code{0} |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd managed-config-flag} {} |
| @deffnx {Interface Command} {no ipv6 nd managed-config-flag} {} |
| Set/unset flag in IPv6 router advertisements which indicates to hosts that they |
| should use managed (stateful) protocol for addresses autoconfiguration in |
| addition to any addresses autoconfigured using stateless address |
| autoconfiguration. |
| |
| Default: not set |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd other-config-flag} {} |
| @deffnx {Interface Command} {no ipv6 nd other-config-flag} {} |
| Set/unset flag in IPv6 router advertisements which indicates to hosts that |
| they should use administered (stateful) protocol to obtain autoconfiguration |
| information other than addresses. |
| |
| Default: not set |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd home-agent-config-flag} {} |
| @deffnx {Interface Command} {no ipv6 nd home-agent-config-flag} {} |
| Set/unset flag in IPv6 router advertisements which indicates to hosts that |
| the router acts as a Home Agent and includes a Home Agent Option. |
| |
| Default: not set |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd home-agent-preference <0-65535>} {} |
| @deffnx {Interface Command} {no ipv6 nd home-agent-preference [<0-65535>]} {} |
| The value to be placed in Home Agent Option, when Home Agent config flag is set, |
| which indicates to hosts Home Agent preference. The default value of 0 stands |
| for the lowest preference possible. |
| |
| Default: 0 |
| @end deffn |
| |
| +@deffn {Interface Command} {ipv6 nd home-agent-lifetime <0-65520>} {} |
| +@deffnx {Interface Command} {no ipv6 nd home-agent-lifetime [<0-65520>]} {} |
| The value to be placed in Home Agent Option, when Home Agent config flag is set, |
| which indicates to hosts Home Agent Lifetime. The default value of 0 means to |
| place the current Router Lifetime value. |
| |
| Default: 0 |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd adv-interval-option} {} |
| @deffnx {Interface Command} {no ipv6 nd adv-interval-option} {} |
| Include an Advertisement Interval option which indicates to hosts the maximum time, |
| in milliseconds, between successive unsolicited Router Advertisements. |
| |
| Default: not set |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd router-preference (high|medium|low)} {} |
| @deffnx {Interface Command} {no ipv6 nd router-preference [(high|medium|low)]} {} |
| Set default router preference in IPv6 router advertisements per RFC4191. |
| |
| Default: medium |
| @end deffn |
| |
| @deffn {Interface Command} {ipv6 nd mtu <1-65535>} {} |
| @deffnx {Interface Command} {no ipv6 nd mtu [<1-65535>]} {} |
| Include an MTU (type 5) option in each RA packet to assist the attached hosts |
| in proper interface configuration. The announced value is not verified to be |
| consistent with router interface MTU. |
| |
| Default: don't advertise any MTU option |
| @end deffn |
| |
| @example |
| @group |
| interface eth0 |
| no ipv6 nd suppress-ra |
| ipv6 nd prefix 2001:0DB8:5009::/64 |
| @end group |
| @end example |
| |
| For more information see @cite{RFC2462 (IPv6 Stateless Address Autoconfiguration)} |
| , @cite{RFC4861 (Neighbor Discovery for IP Version 6 (IPv6))} |
| , @cite{RFC6275 (Mobility Support in IPv6)} |
| and @cite{RFC4191 (Default Router Preferences and More-Specific Routes)}. |