Patent ID: 7173901

Claim:
System for flow control in a switching network packet, particularly in a packet switched network, having a switch core and including ingress termination boards linked to egress termination boards, by means of respective virtual ingress to egress flow control pipe and via respectively ingress or egress switching network ports, each switching network port corresponding to an interface between a termination board and the switch core and being linked to communication channels in this termination board, each communication channel corresponding to an external interface for a termination board, characterized in that to at least one respective virtual ingress to egress flow control pipe (VIEPaâ€³) between a determined switching network port (P 1 â€³ 1 ) of an ingress termination board (B 1 â€³) and a determined switching network port (P 1 â€³ 4 ) of an egress termination board (B 4 â€³), is at least associated one other virtual ingress to egress flow control pipe (VIEPbâ€³), said at least one first virtual ingress to egress flow control pipe handling all the traffic, between the two switching network ports, which is going towards communication channels for which there is no congestion detected at the level of the egress termination board, the said other at least one other virtual ingress to egress pipe handling all traffic, between the two switching network ports, which is going towards communication channels for which congestion is detected at the level of the egress termination board and as long as such a congestion is detected.