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diff --git a/docs/configuration/protocols/igmp.rst b/docs/configuration/protocols/igmp.rst deleted file mode 100644 index d3492632..00000000 --- a/docs/configuration/protocols/igmp.rst +++ /dev/null @@ -1,249 +0,0 @@ -:lastproofread: 2023-01-27 - -.. _multicast: - -######### -Multicast -######### - -VyOS facilitates IP Multicast by supporting **PIM Sparse Mode**, -**IGMP** and **IGMP-Proxy**. - -************ -PIM and IGMP -************ - -PIM (Protocol Independent Multicast) must be configured in every -interface of every participating router. Every router must also have the -location of the Rendevouz Point manually configured. Then, -unidirectional shared trees rooted at the Rendevouz Point will -automatically be built for multicast distribution. - -Traffic from multicast sources will go to the Rendezvous Point, and -receivers will pull it from a shared tree using IGMP (Internet Group -Management Protocol). - -Multicast receivers will talk IGMP to their local router, so, besides -having PIM configured in every router, IGMP must also be configured in -any router where there could be a multicast receiver locally connected. - -VyOS supports both IGMP version 2 and version 3 (which allows -source-specific multicast). - - -Example -======= - -In the following example we can see a basic multicast setup: - -.. image:: /_static/images/multicast-basic.png - :width: 90% - :align: center - :alt: Network Topology Diagram - - - -**Router 1** - -.. code-block:: none - - set interfaces ethernet eth2 address '172.16.0.2/24' - set interfaces ethernet eth1 address '100.64.0.1/24' - set protocols ospf area 0 network '172.16.0.0/24' - set protocols ospf area 0 network '100.64.0.0/24' - set protocols igmp interface eth1 - set protocols pim interface eth1 - set protocols pim interface eth2 - set protocols pim rp address 172.16.255.1 group '224.0.0.0/4' - -**Router 3** - -.. code-block:: none - - set interfaces dummy dum0 address '172.16.255.1/24' - set interfaces ethernet eth0 address '172.16.0.1/24' - set interfaces ethernet eth1 address '172.16.1.1/24' - set protocols ospf area 0 network '172.16.0.0/24' - set protocols ospf area 0 network '172.16.255.0/24' - set protocols ospf area 0 network '172.16.1.0/24' - set protocols pim interface dum0 - set protocols pim interface eth0 - set protocols pim interface eth1 - set protocols pim rp address 172.16.255.1 group '224.0.0.0/4' - -**Router 2** - -.. code-block:: none - - set interfaces ethernet eth1 address '10.0.0.1/24' - set interfaces ethernet eth2 address '172.16.1.2/24' - set protocols ospf area 0 network '10.0.0.0/24' - set protocols ospf area 0 network '172.16.1.0/24' - set protocols pim interface eth1 - set protocols pim interface eth2 - set protocols pim rp address 172.16.255.1 group '224.0.0.0/4' - - - - - -Basic commands -============== - -These are the commands for a basic setup. - -.. cfgcmd:: set protocols pim interface <interface-name> - - Use this command to enable PIM in the selected interface so that it - can communicate with PIM neighbors. - - -.. cfgcmd:: set protocols pim rp address <address> group - <multicast-address/mask-bits> - - Use this command to manually configure a Rendezvous Point for PIM so - that join messages can be sent there. Set the Rendevouz Point address - and the matching prefix of group ranges covered. These values must - be shared with every router participating in the PIM network. - - -.. cfgcmd:: set protocols igmp interface eth1 - - Use this command to configure an interface with IGMP so that PIM can - receive IGMP reports and query on the selected interface. By default - IGMP version 3 will be used. - - - -Tuning commands -=============== - -You can also tune multicast with the following commands. - -.. cfgcmd:: set protocols pim interface <interface> dr-priority <value> - - Use this PIM command in the selected interface to set the priority - (1-4294967295) you want to influence in the election of a node to - become the Designated Router for a LAN segment. The default priority - is 1, set a higher value to give the router more preference in the - DR election process. - - -.. cfgcmd:: set protocols pim int <interface> hello <seconds> - - Use this command to configure the PIM hello interval in seconds - (1-180) for the selected interface. - - -.. cfgcmd:: set protocols pim rp keep-alive-timer <seconds> - - Use this PIM command to modify the time out value (31-60000 - seconds) for an `(S,G) <https://tools.ietf.org/html/rfc7761#section-4.1>`_ - flow. 31 seconds is chosen for a lower bound as some hardware - platforms cannot see data flowing in better than 30 seconds chunks. - - -.. cfgcmd:: set protocols igmp interface <interface> join <multicast-address> - source <IP-address> - - Use this command to allow the selected interface to join a multicast - group defining the multicast address you want to join and the source - IP address too. - - -.. cfgcmd:: set protocols igmp interface <interface> query-interval <seconds> - - Use this command to configure in the selected interface the IGMP - host query interval (1-1800) in seconds that PIM will use. - - -.. cfgcmd:: set protocols igmp interface <interface> query-max-response-time - <deciseconds> - - Use this command to configure in the selected interface the IGMP - query response timeout value (10-250) in deciseconds. If a report is - not returned in the specified time, it will be assumed the `(S,G) or - (*,G) state <https://tools.ietf.org/html/rfc7761#section-4.1>`_ has - timed out. - - -.. cfgcmd:: set protocols igmp interface <interface> version <version-number> - - Use this command to define in the selected interface whether you - choose IGMP version 2 or 3. The default value is 3. - - - -********** -IGMP Proxy -********** - -:abbr:`IGMP (Internet Group Management Protocol)` proxy sends IGMP host messages -on behalf of a connected client. The configuration must define one, and only one -upstream interface, and one or more downstream interfaces. - -Configuration -============= - -.. cfgcmd:: set protocols igmp-proxy interface <interface> role - <upstream | downstream> - - * **upstream:** The upstream network interface is the outgoing interface - which is responsible for communicating to available multicast data sources. - There can only be one upstream interface. - - * **downstream:** Downstream network interfaces are the distribution - interfaces to the destination networks, where multicast clients can join - groups and receive multicast data. One or more downstream interfaces must - be configured. - -.. cfgcmd:: set protocols igmp-proxy interface <interface> alt-subnet <network> - - Defines alternate sources for multicasting and IGMP data. The network address - must be on the following format 'a.b.c.d/n'. By default, the router will - accept data from sources on the same network as configured on an interface. - If the multicast source lies on a remote network, one must define from where - traffic should be accepted. - - This is especially useful for the upstream interface, since the source for - multicast traffic is often from a remote location. - - This option can be supplied multiple times. - -.. cfgcmd:: set protocols igmp-proxy disable-quickleave - - Disables quickleave mode. In this mode the daemon will not send a Leave IGMP - message upstream as soon as it receives a Leave message for any downstream - interface. The daemon will not ask for Membership reports on the downstream - interfaces, and if a report is received the group is not joined again the - upstream. - - If it's vital that the daemon should act exactly like a real multicast client - on the upstream interface, this function should be enabled. - - Enabling this function increases the risk of bandwidth saturation. - -.. cfgcmd:: set protocols igmp-proxy disable - - Disable this service. - -.. _igmp:proxy_example: - -Example -------- - -Interface `eth1` LAN is behind NAT. In order to subscribe `10.0.0.0/23` subnet -multicast which is in `eth0` WAN we need to configure igmp-proxy. - -.. code-block:: none - - set protocols igmp-proxy interface eth0 role upstream - set protocols igmp-proxy interface eth0 alt-subnet 10.0.0.0/23 - set protocols igmp-proxy interface eth1 role downstream - -Operation -========= - -.. opcmd:: restart igmp-proxy - - Restart the IGMP proxy process. |