.. _clicmd_src_vnet_ip6-nd: =============================================================== Ip6-nd cli reference =============================================================== ip6 nd ------------------------------------------------------------------------- .. code-block:: console ip6 nd ... This command is used to configure the neighbor discovery parameters on a given interface. Use the ``show ip6 interface`` command to display some of the current neighbor discovery parameters on a given interface. This command has three formats: **Format 1 - Router Advertisement Options:** (Only one can be entered in a single command) .. code-block:: console ip6 nd [no] [ra-managed-config-flag] | [ra-other-config-flag] | [ra-suppress] | [ra-suppress-link-layer] | [ra-send-unicast] | [ra-lifetime ] | [ra-initial ] | [ra-interval []] | [ra-cease] Where: ``[no] ra-managed-config-flag`` - Advertises in ICMPv6 router-advertisement messages to use stateful address auto-configuration to obtain address information (sets the M-bit). Default is the M-bit is not set and the ``no`` option returns it to this default state. ``[no] ra-other-config-flag`` - Indicates in ICMPv6 router-advertisement messages that hosts use stateful auto configuration to obtain nonaddress related information (sets the O-bit). Default is the O-bit is not set and the ``no`` option returns it to this default state. ``[no] ra-suppress`` - Disables sending ICMPv6 router-advertisement messages. The ``no`` option implies to enable sending ICMPv6 router-advertisement messages. ``[no] ra-suppress-link-layer`` - Indicates not to include the optional source link-layer address in the ICMPv6 router-advertisement messages. Default is to include the optional source link-layer address and the ``no`` option returns it to this default state. ``[no] ra-send-unicast`` - Use the source address of the router-solicitation message if available. The default is to use multicast address of all nodes, and the ``no`` option returns it to this default state. ``[no] ra-lifetime `` - Advertises the lifetime of a default router in ICMPv6 router-advertisement messages. The range is from 0 to 9000 seconds. ```` must be greater than ````. The default value is 600 seconds and the ``no`` option returns it to this default value. ``[no] ra-initial `` - Number of initial ICMPv6 router-advertisement messages sent and the interval between each message. Range for count is 1 - 3 and default is 3. Range for interval is 1 to 16 seconds, and default is 16 seconds. The ``no`` option returns both to their default value. ``[no] ra-interval []`` - Configures the interval between sending ICMPv6 router-advertisement messages. The range for max-interval is from 4 to 200 seconds. min-interval can not be more than 75% of max-interval. If not set, min-interval will be set to 75% of max-interval. The range for min-interval is from 3 to 150 seconds. The ``no`` option returns both to their default value. ``[no] ra-cease`` - Cease sending ICMPv6 router-advertisement messages. The ``no`` options implies to start (or restart) sending ICMPv6 router-advertisement messages. **Format 2 - Prefix Options:** .. code-block:: console ip6 nd [no] prefix / [ | infinite] [no-advertise] [off-link] [no-autoconfig] [no-onlink] Where: ``no`` - All additional flags are ignored and the prefix is deleted. `` `` - ```` is the length of time in seconds during what the prefix is valid for the purpose of on-link determination. Range is 7203 to 2592000 seconds and default is 2592000 seconds (30 days). ```` is the preferred-lifetime and is the length of time in seconds during what addresses generated from the prefix remain preferred. Range is 0 to 604800 seconds and default is 604800 seconds (7 days). ``infinite`` - Both ```` and ```` are infinite, no timeout. ``no-advertise`` - Do not send full router address in prefix advertisement. Default is to advertise (i.e. - This flag is off by default). ``off-link`` - Prefix is off-link, clear L-bit in packet. Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and this prefix can be used for on-link determination). ``no-onlink`` also controls the L-bit. ``no-autoconfig`` - Do not use prefix for autoconfiguration, clear A-bit in packet. Default is autoconfig (i.e. - This flag is off and A-bit in packet is set by default. ``no-onlink`` - Do not use prefix for onlink determination, clear L-bit in packet. Default is on-link (i.e. - This flag is off and L-bit in packet is set by default and this prefix can be used for on-link determination). ``off-link`` also controls the L-bit. **Format 3: - Default of Prefix:** .. code-block:: console ip6 nd [no] prefix / default When a new prefix is added (or existing one is being overwritten) ``default`` uses default values for the prefix. If ``no`` is used, the ``default`` is ignored and the prefix is deleted. Example of how set a router advertisement option: .. code-block:: console ip6 nd GigabitEthernet2/0/0 ra-interval 100 20 Example of how to add a prefix: .. code-block:: console ip6 nd GigabitEthernet2/0/0 prefix fe80::fe:28ff:fe9c:75b3/64 infinite no-advertise Example of how to delete a prefix: .. code-block:: console ip6 nd GigabitEthernet2/0/0 no prefix fe80::fe:28ff:fe9c:75b3/64 Declaration: ``ip6_nd_command`` `src/vnet/ip6-nd/ip6_ra.c line 2317 `_ Implementation: ``ip6_ra_cmd`` ip6 nd address autoconfig ------------------------------------------------------------------------- .. code-block:: console ip6 nd address autoconfig [default-route|disable] This command is used to enable ND address autoconfiguration on particular interface including setting up default routes. Example of how to enable ND address autoconfiguration: .. code-block:: console ip6 nd address autoconfig GigabitEthernet2/0/0 Example of how to enable ND address autoconfiguration with setting up default routes: .. code-block:: console ip6 nd address autoconfig GigabitEthernet2/0/0 default-route Example of how to disable ND address autoconfiguration: .. code-block:: console ip6 nd address autoconfig GigabitEthernet2/0/0 disable Declaration: ``ip6_nd_address_autoconfig_command`` `src/vnet/ip6-nd/rd_cp.c line 590 `_ Implementation: ``ip6_nd_address_autoconfig`` set interface ip6-nd proxy ------------------------------------------------------------------------- .. code-block:: console set interface ip6-nd proxy [enable|disable] Declaration: ``set_int_ip6_nd_proxy_enable_command`` `src/vnet/ip6-nd/ip6_nd_mirror_proxy.c line 84 `_ Implementation: ``set_int_ip6_nd_proxy_command_fn`` set ip6 nd proxy ------------------------------------------------------------------------- .. code-block:: console set ip6 nd proxy [del] Declaration: ``set_ip6_nd_proxy_command`` `src/vnet/ip6-nd/ip6_nd_proxy.c line 121 `_ Implementation: ``set_ip6_nd_proxy_cmd``