Network > Routing > Logical Routers > Multicast

The table describes the settings to configure IPv4 multicast for a logical router on an Advanced Routing Engine.

IPv4 Multicast Settings	Description
enable multicast protocol	Select to enable multicast protocol for the logical router.
Static
Name	Add an mroute by name (maximum of 31 characters). The name must start with an alphanumeric character, underscore (_), or hyphen (-), and contain zero or more alphanumeric characters, underscore (_) or hyphen(-). No dot (.) or space is allowed.
Destination	Enter the destination (IPv4 address/mask), which is the multicast source to which you are doing an RPF check.
Interface	Select the egress interface for a unicast route to the multicast source.
Next Hop	Enter the IPv4 address of the next hop toward the source.
Preference	Enter a preference for the mroute; range is 1 to 255.
PIM - General
Enable	Enable PIM.
RPF Lookup Mode	Select the Reverse-Path Forwarding (RPF) lookup mode, which determines where the logical router looks to find the outgoing interface to reach the source address contained in the multicast packet. If the outgoing interface stored in the RIB matches the interface on which the multicast packet arrived, the logical router accepts and forwards the packet; otherwise, it drops the packet. • mrib-then-urib—Look in the multicast RIB first, and then the unicast RIB. • mrib-only—Look in the multicast RIB only. • urib-only—Look in the unicast RIB only.
Interface General Timer	Select an Interface Timer Profile or create a new one.
Route Age Out Time (sec)	Specify the number of seconds that a multicast route remains in the mRIB after the session ends between a multicast group and a source; range is 210 to 7,200; default is 210.
Multicast SSM Range	To configure Source-Specific Multicast (SSM), select a prefix list that specifies the source addresses allowed to deliver multicast traffic to the receiver; default is None (no prefix list).
Group Address	To configure the Shortest-Path Tree (SPT) threshold for a multicast group or prefix, Add a group address (multicast group or prefix for which you are specifying the distribution tree) by selecting a prefix list or creating a new one.
Threshold	Specify the SPT threshold for the group or prefix: • 0 (switch on first data packet)—(default) The logical router switches from shared tree to SPT for the group/prefix when the logical router receives the first data packet for the group/prefix. • Enter the total number of kilobits per second that can arrive for the multicast group/prefix at any interface and over any time period, upon which the logical router switches to SPT distribution for that multicast group/prefix; range is 0 to 4,294,967,295. • never (do not switch to SPT)—The PIM router continues to use the shared tree to forward packets to the multicast group/prefix.
PIM - Group Permissions
Source Group List	To grant permission for multicast packets from certain sources and/or multicast packets to certain destination multicast groups to transit the logical router, select an access list. Default is None (no access list), meaning no specific source or multicast groups are subject to PIM group permissions.
PIM - Interfaces
Name	Enter a name for the interface (maximum of 31 characters). The name must start with an alphanumeric character, underscore (_), or hyphen (-), and contain zero or more alphanumeric characters, underscore (_) or hyphen(-). No dot (.) or space is allowed.
Description	Enter a description of the interface.
DR Priority	Specify the Designated Router priority of the interface to control which router forwards PIM Join message, PIM Register messages, and Prune messages to the Rendezvous Point (RP); range is 1 to 4,294,967,295; default is 1. Of the PIM devices on a LAN, if DR Priority is configured, the device with the highest priority value is elected the DR.
Send BSM	Select to allow propagation of Bootstrap Messages (enabled by default).
Timer Profile	The Timer Profile for the interface is inherited from the General PIM section unless you override that by selecting a Timer Profile for the interface; default is None.
Neighbor Filter	Use an access list to specify the prefixes of devices that are allowed to become or denied from becoming PIM neighbors of the logical router. Default is None (no access list).
PIM - Rendezvous Point
RP Type	Configure a Static RP and/or a Candidate RP; they are not mutually exclusive. • Static RP—Establishes a static mapping of an RP to multicast groups. You must explicitly configure the same RP on other PIM routers in the PIM domain. • Candidate RP • None
Interface	Select the RP interface where the RP receives and sends multicast packets. Valid interface types are Layer3 interfaces (which include Ethernet, loopback, VLAN, Aggregate Ethernet (AE), tunnel, and subinterfaces).
Address	Select an address/prefix length of the interface; IP addresses of the RP interface you selected populate the list.
Override learned RP for the same group	(Static RP only) Select to have this static RP serve as RP (instead of the RP elected for the groups in the Group List).
Group List	Select or create an access list to specify the multicast groups for which the static RP acts as the RP. Default is None (no access list).
Priority	(Candidate RP only) Specify the priority of the candidate RP; range is 0 to 255; default is 192. A lower priority value indicates a higher priority.
Advertisement Interval	(Candidate RP only) Specify the frequency (in seconds) at which the candidate RP sends advertisements to other routers; range is 1 to 26,214; default is 60.
IPv4 Address	Add an interface by selecting the IPv4 Address of the interface.
Group List	To control the groups that the candidate RP accepts, select or create a group list, which is an IPv4 access list. Default is None (no access list). If no access list is applied, the logical router starts advertising itself as the RP for all groups.
Override	Select if you want the remote RP you configured statically to serve as RP, instead of an RP that is dynamically learned (elected) for groups in the Group List. Default is disabled.
IGMP
enable IGMP	Enable IGMP.
Dynamic
Interface	Add an interface.
Version	Select IGMP version 2 or 3.
Robustness	Select a robustness value; range is 1 to 7; default is 2. Increase the value if the subnet on which this firewall is located is prone to losing packets. Note:  The (Robustness * QueryInterval) + MaxQueryResponseTime determines how long a Join message is valid on the logical router. If the logical router receives a Leave Group message, Robustness * LastMemberQueryInterval is the length of time that the logical router waits before deleting the Leave Group entry. For Join messages, a Robustness value of 1 is ignored. For Leave Group messages, the logical router uses the Robustness value as the Last Member Query Count also.
Group Filter	Select or create an access list to control which prefixes use dynamic IGMP. Default is None (no access list).
Max Groups	Enter the maximum number of groups that IGMP can process simultaneously for the interface; range is 1 to 65,525; default is unlimited, which means the highest value in the range.
Max Sources	Enter the maximum number of sources that IGMP can process simultaneously for the interface; range is 1 to 65,525; default is unlimited, which means the highest value in the range.
Query Profile	Select an IGMP Interface Query Profile that you created or create a new one to apply to the interface.
drop IGMP packets without Router Alert option	Select to require that incoming IGMPv2 or IGMPv3 packets have the IP Router Alert Option, RFC 2113, or they will be dropped. Default is disabled.
Static
Name	Add a static IGMP interface by name (maximum of 31 characters). The name must start with an alphanumeric character, underscore (_), or hyphen (-), and contain zero or more alphanumeric characters, underscore (_) or hyphen(-). No dot (.) or space is allowed.
Interface	Select the interface to be a static IGMP interface.
Group Address	Enter the multicast group address of the static IGMP members.
Source Address	Enter the source address from which the static IGMP members receive multicasts.
MSDP - General
Enable	Enable Multicast Source Discovery Protocol (MSDP) for the logical router.
Global Timer	Select a global MSDP Timer profile, or select the default profile, or create a new global MSDP Timer profile. If you select the default profile, Keep Alive Interval is set to 60, Message Timeout is set to 75, and Connection Retry Interval is set to 30. Default is None, which means the default values are applied.
Global Authentication	Select a Global Authentication profile or create a new one. Default is None.
Originator ID—Interface	Select the interface that the logical router uses as the RP interface in Source-Active (SA) messages. If you specify an IP address for the Originator ID, you must configure an Originator IP Interface. If no Interface is configured, the IP Address should be kept empty.
Originator ID—IP	Select or enter the IP address (with prefix length) that the logical router uses as the RP address in SA messages. If no Originator IP address is configured, the logical router uses the PIM RP address to encapsulate the SA message.
MSDP - Peers
Peer	Add a peer name (maximum of 63 characters). The name must start with an alphanumeric character, underscore (_), or hyphen (-) and can contain a combination of alphanumeric characters, underscore, or hyphen. No dot (.) or space is allowed.
Source Interface	Enter the Source interface used to establish the MSDP connection over TCP with its MSDP peer.
Source Interface—IP	Select the IP address of the source interface. Default is None.
Peer Address Type	Select the type of peer address: • IP—(default) and select an address object or enter an IP address. • FQDN—Enter the Fully Qualified Domain Name of the peer. The dropdown list displays all FQDN names configured as address objects.
Remote AS	Enter the BGP autonomous system number of the Remote AS where the MSDP peer is located.
Authentication	Do one of the following: • Select an authentication profile to apply to this peer, which overrides the Global Authentication Profile you applied to MSDP on the General page. • inherit (inherit from global authentication)—the global authentication profile (default). • None—to disable authentication to this peer, which overrides the Global Authentication Profile.
Max SA	Enter the maximum number of Source-Active (SA) entries the SA cache will accept from this MSDP peer. Range is 0 to 1,024; default is 0. After this maximum is reached, new SA messages from this peer are dropped.
Peer Inbound SA Filter	Select an access list or create a new access list to filter incoming SA messages (block unwanted groups) from this peer. Default is None. The access list can specify source addresses in an (S,G) pair to filter, or destination (group) addresses in an (S,G) pair to filter, or both.
Peer Outbound SA Filter	Select an access list or create a new access list to filter outgoing SA messages (block unwanted groups) being propagated to this peer. Default is None. The access list can specify source addresses in an (S,G) pair to filter, or destination (group) addresses in an (S,G) pair to filter, or both.

Parent topic 

Network > Routing > Logical Routers