Method for dynamic lossless adjustment of bandwidth of an embedded resilient packet ring network
First Claim
1. A method for adjusting bandwidth of an embedded Resilient Packet Ring (RPR) ring network dynamically and losslessly, the embedded RPR ring network being in a Synchronous Digital Hierarchy (SDH)/Synchronous Optical Network (SONET) comprising an SDH/SONET processing layer and an RPR processing layer, wherein a Link Capacity Adjustment Scheme (LCAS) system is added in the SDH/SONET processing layer, the method comprising the steps of:
- (A1) allocating a demanded bandwidth as bandwidth of a link between sites to be increased in the ring network on the SDH/SONET processing layer;
(B1) starting the LCAS system in the SDH/SONET processing layer, and losslessly increasing an actual bandwidth of the link, in which bandwidth is required to be increased to the demanded bandwidth; and
(C1) configuring the demanded bandwidth as bandwidth of the ring network on the RPR processing layer.
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Abstract
Disclosed is a method for dynamically and losslessly adjusting bandwidth of an embedded Resilient Packet Ring (RPR) ring network, in which dynamic and lossless bandwidth adjustment for an RPR ring network embedded in a Synchronous Digital Hierarchy (SDH)/Synchronous Optical Network (SONET) can be realized through adding a Link Capacity Adjustment Scheme (LCAS) system in the SDH/SONET processing layer. When it is required to increase ring network bandwidth, the bandwidth of the link section between sites on the SDH/SONET processing layer is first increased. Then the LCAS system in the SDH/SONET processing layer is started, and the actual bandwidth of the link on the SDH/SONET processing layer is increased losslessly with the LCAS system. Finally the bandwidth of the ring network on the RPR processing layer is increased. When it is required to decrease ring network bandwidth, the bandwidth of the ring network on the RPR processing layer is first decreased. Then the LCAS system in the SDH/SONET processing layer is started, and the actual bandwidth of the link on the SDH/SONET processing layer is decreased losslessly with the LCAS system. Finally the bandwidth of the link section between sites on the SDH/SONET processing layer is decreased. With the disclosed method, dynamic and lossless bandwidth adjustment for an embedded RPR ring network in SDH/SONET can be realized.
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Citations
14 Claims
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1. A method for adjusting bandwidth of an embedded Resilient Packet Ring (RPR) ring network dynamically and losslessly, the embedded RPR ring network being in a Synchronous Digital Hierarchy (SDH)/Synchronous Optical Network (SONET) comprising an SDH/SONET processing layer and an RPR processing layer, wherein a Link Capacity Adjustment Scheme (LCAS) system is added in the SDH/SONET processing layer, the method comprising the steps of:
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(A1) allocating a demanded bandwidth as bandwidth of a link between sites to be increased in the ring network on the SDH/SONET processing layer;
(B1) starting the LCAS system in the SDH/SONET processing layer, and losslessly increasing an actual bandwidth of the link, in which bandwidth is required to be increased to the demanded bandwidth; and
(C1) configuring the demanded bandwidth as bandwidth of the ring network on the RPR processing layer. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for adjusting bandwidth of an embedded RPR ring network dynamically and losslessly, the embedded RPR ring network being in an SDH/SONET comprising an SDH/SONET processing layer and an RPR processing layer, wherein a LCAS system is added in the SDH/SONET processing layer, the method comprising the steps of:
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(A2) allocating a demanded bandwidth as bandwidth of the ring network on the RPR processing layer;
(B2) starting the LCAS system in the SDH/SONET processing layer, and losslessly decreasing an actual bandwidth of a link of the ring network on the SDH/SONET processing layer, in which bandwidth is required to be decreased to the demanded bandwidth; and
(C2) configuring a demanded bandwidth as bandwidth of the link. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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Specification