Lucent Technologies 6000 - Manual (Page 428)

10-2 MAX 6000/3000 Network Configuration Guide
Setting Up IP Multicast Forwarding
Configuring multicast forwarding
Configuring multicast forwarding
To configure the MAX unit to act as a multicast forwarder, you must enable multicast
forwarding and identify the MBONE interface. You also need to configure the local or WAN
interfaces that support multicast clients. Depending on your network requirements, you might
also configure heartbeat monitoring, which provides monitoring for connectivity problems.
Parameters used to configure multicast forwarding are located in the Ethernet > Mod Config >
Multicast profile and in Ethernet > Connections > any Connection profile > IP Options
profiles. For detailed information about each parameter, see the MAX Reference.
Enabling multicast forwarding
To enable multicast forwarding, you must set the Ethernet > Mod Config > Multicast >
Forwarding parameter to Yes. When you change the parameter from No to Yes, the multicast
subsystem reads the values in the Ethernet profile and initiates the forwarding function.
If you modify any other multicast value in the Ethernet profile, you must set the Forwarding
parameter to No and then back to Yes again to force a read of the new value.
Identifying the MBONE interface
The MBONE interface is the one on which the MBONE router resides. If it resides across the
WAN, you must set the Ethernet > Mod Config > Multicast > Mbone Profile parameter to
specify the name of a Connection profile to connect to that router. If the MBONE router
resides on the same LAN as the MAX unit, you leave the Mbone Profile parameter set to null
and the MAX assumes that its Ethernet is the MBONE interface.
Multicast forwarder polling activities
When you configure the MAXas a multicast forwarder, it forwards polling messages generated
by the multicast router and keeps track of active memberships from its client interfaces. To
configure the timeout value for deactivating memberships, you can set the Ethernet > Mod
Config > Multicast > Membership Timeout parameter to a value from 60 to 65535 seconds.
The factory default is six minutes.
Configuring the MAX to support multicast clients
To configure the MAX to support multicast clients, you need to specify which interfaces
should support them, the rate at which the MAX accepts multicast packets from clients, and
how the MAX responds to IGMP leave group messages.
Specifying the interfaces that support multicast clients
Each local or WAN interface that supports multicast clients must have the Ethernet > Mod
Config > Multicast > Client parameter set to Yes (or you can set the Multicast Client parameter
in each client’s Connection profile to Yes). With this setting, the MAX begins handling IGMP
requests and responses on the interface. It does not begin forwarding multicast traffic until you
set the Ethernet > Mod Config > Multicast > Rate Limit parameter.