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US 2009/0268627 A1Published application
Method for ring management in an ethernet network comprising a plurality of redundancy managers
AssigneeNokia Siemens Networks Oy
InventorPedro Ricardo de Frias Rebelo Nunes
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Abstract
Test packets (TP1, TP2) are emitted from redundancy managers (RM1, RM2) containing a source address and a rank number (RN) in information fields. Another redundancy manager (RM1) replaces this rank number only if its own rank number is lower (higher priority) than the rank number in a received test packet. All redundancy managers (RM2) with a higher rank number switch to a passive mode and only the redundancy managers (RM1) with the lowest rank number remains active.
Claims9
A method for ring management in an Ethernet network comprising
- a plurality of redundancy managers in a ring, which can switch into an active or a passive mode, wherein
- a rank number is assigned to each of the plurality of redundancy managers, each of the pluarlity of redundancy managers transmits test packets with at least one of a corresponding source address and rank number,
- each of the other pluarlity of redundancy managers in the ring check the received test packets, add a corresponding rank numbers when required, and forward the test packets,
- nodes without a redundancy manager function in the ring forward the test packet unchanged, and each of the plurality of redundancy managers, that receives its own test packet transmitted over the ring, evaluates the test packet, and switches from an active mode into a passive mode or remains in the passive mode, when its own rank number is higher than the rank number of another one of the plurality of redundancy managers inserted in the test packet.
1 more element
Dependencies are inferred from the claim text.