
Configuring IP Multicasting and Multimedia Services
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Configuring a Backup Multicast Router
IGMP Relay supports two types of backup configuration:
• Configurations that contain a primary and a backup multicast router
• Configurations that contain a primary and a backup IGMP Relay
In Figure 9-8
, for example, an IGMP Relay device has interfaces to two multicast
routers. A leased line connects the IGMP Relay device to the primary multicast
router. A dial-up line connects the IGMP Relay device to the backup multicast
router.
Figure 9-8. IGMP Relay with Primary and Backup Boundary Routers
For information on configuring a dial connection, see Configuring Dial Services.
Key
IP0069A
Leased Line
Dial connection
IGMP Relay
Primary IP
multicast router
Backup IP
multicast router
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