Bandwidth adjustment method and system for optical channel data unit flexible based on generic framing procedure

摘要

The disclosure claims a bandwidth adjustment method and system for Optical channel Data Unit flexible (ODUflex) based on a Generic Framing Procedure (GFP), wherein, the method includes that: (501) a source end sends a bandwidth adjustment control frame which contains bandwidth adjustment parameters; (503) a plurality of intermediate nodes forward the bandwidth adjustment control frame to a sink end via an ODUflex link, during the forwarding process, the plurality of intermediate nodes determine that resource thereof can satisfy the bandwidth adjustment parameters, and then reserve the bandwidth adjustment resource; (505) after receiving the bandwidth adjustment control frame, the sink end feeds back an adjustment acknowledgment frame which contains adjustment acknowledgment information to the source end via the plurality of intermediate nodes; (507) the plurality of intermediate nodes use the reserved bandwidth adjustment resource to implement adjustment for the bandwidth of the ODUflex link according to the adjustment acknowledgement information of the adjustment acknowledgment frame. The disclosure realizes the bandwidth adjustment for the ODUflex without interrupting an existing service by increasing an Optical channel Payload Unit (OPU) overhead for the bandwidth adjustment in the ODUflex (GFP) frame.

主权项

1. A bandwidth adjustment method for Optical channel Data Unit flexible (ODUflex) based on the Generic Framing Procedure (GFP), comprising steps of:
a source end sending a bandwidth adjustment control frame which contains bandwidth adjustment parameters; a plurality of intermediate nodes forwarding the bandwidth adjustment control frame to a sink end via an ODUflex link, and during the forwarding process, if the plurality of intermediate nodes determine that resource of the plurality of intermediate nodes satisfy the bandwidth adjustment parameters, then a reserving bandwidth adjustment resource; after receiving the bandwidth adjustment control frame, the sink end feeding back to the source end an adjustment acknowledgment frame which contains adjustment acknowledgment information via the plurality of intermediate nodes; and the plurality of intermediate nodes using the reserved bandwidth adjustment resource to implement adjustment for bandwidth of the ODUflex link according to the adjustment acknowledgement information of the adjustment acknowledgment frame; wherein the bandwidth adjustment parameters comprise: a state indicator, a branch port number indicator, a number of branch Time Slot (TS) indicator, an intermediate mode state indicator and an adjustment state confirmation indicator.