| 摘要 |
A method of multicast traffic redundancy protection includes detecting an original active router; switching a Virtual Route Redundancy Protocol (VRRP) state, by a Virtual Route Redundancy Protocol (VRRP) state switching module if the original active router is faulty; selecting a new active router, notifying, by the VRRP state switching module, a Protocol Independent Multicast (PIM) routing protocol module of the new active router after the VRRP state switching; and, selecting, by the PIM module, the new active router in the VRRP as a Designated Router (DR) in the PIM.
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