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US 2009/0268607 A1Published application
Method and device for multicast traffic redundancy protection
AssigneeHuawei Technologies Co., Ltd.
InventorsLiyang Wang, Jun Liu, Fenghua Zhao
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Abstract
A method and apparatus of multicast traffic redundancy protection is provided. After a fault occurs, the VRRP selects a new active router and notifies the PIM routing protocol, and the PIM uses the new active router as its DR.
Claims9
A method of multicast traffic redundancy protection, comprising:
- detecting an original active router;
- switching a state, by a Virtual Route Redundancy Protocol (VRRP) state switching module if the original active router is faulty, and selecting a new active router;
- and
- notifying a Protocol Independent Multicast (PIM) routing protocol module of the new active router after the state switching;
- and
- selecting, by the PIM module, the new active router as a Designated Router (DR).
3 more elements
A layer-3 network device, comprising:
- a fault detecting module, adapted to detect whether an original active router is faulty;
- a Virtual Route Redundancy Protocol (VRRP) state switching module, adapted to select a new active router and notify a Protocol Independent Multicast (PIM) routing protocol module of the new active router in the VRRP;
- and
- the PIM module, adapted to select the new active router as a Designated Router (DR) wherein:
- when detecting that the original active router is faulty, the fault detecting module instructs the VRRP state switching module to switch a state and select the new active router.
2 more elements
Dependencies are inferred from the claim text.