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Method for providing flow control of ethernet frames transported over a transport SDH/SONET network

  • US 20030161269A1
  • Filed: 01/31/2003
  • Published: 08/28/2003
  • Est. Priority Date: 02/22/2002
  • Status: Abandoned Application
First Claim
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1. A method for providing flow control of Ethernet traffic that is transported through a pipe from a sending point to a receiving point over at least one SDH/SONET network, the at least one SDH/SONET network comprising network elements or nodes, fiber connections connecting the network elements and SDH/SONET virtual containers, the transport being managed through a new layer over SDH/SONET network physical layer, the new layer comprising Access Points, links of Access Point pairs and circuits, namely the possible routes for connecting a pair of Access Points, wherein the method comprises the steps of:

  • at the network elements hosting the sending and receiving points, respectively, providing termination blocks for storing queues of Ethernet frames, when the filling of termination block queue at the receiving node reaches a danger threshold, generating a Link Back-pressure Request and forwarding it to termination block at the transmitting node along the opposite direction;

    upon receipt of this request at the termination block suspending the transmission of other already stored Ethernet frames by until the disappearance of the Link Back-pressure Request.

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