Router wire card and data processing method

Abstract

The application discloses a router wire card and a data processing method thereof. The data processing method comprises the steps that TDM (time division multiplexing) port rate T0 and ether port rate T1 are allocated in a processor of a router wire card mainboard; the processor structure sends an ether message to a TDM port from an ether port to determine the ratio a of T0 to T1, consumption data is added to the inside or outside of the ether message, and the length b of the consumption data meets the relation that the ratio of the length p of TDM payload data in the ether message to the length of the ether message added with the consumption data is equal or approximate to a; the processor sends the ether message added with the consumption data inside or outside to a programmable device arranged at the TDM port through the ether port and an ether bus; and the programmable device extracts the TDM payload data from the ether message, encapsulates to obtain a TDM message and sends the TDM message from the TDM port. According to the invention, the flow fluctuation from the ether port to the TDM port can be reduced with lower cost and processing expense.

Description

technical field [0001] The present application relates to the technical field of network communication, in particular to a router line card and a data processing method for the router line card. Background technique [0002] In routers with multi-core network processors as the forwarding core, it has become a common design scheme in the industry to use abundant Ethernet ports to connect various time division multiplexing (TDM, Time Division Multiplexing) interfaces. However, the rate of the Ethernet bus adopting this design is higher than the rate of the TDM bus, so the traffic fluctuation of the Ethernet port will be large and the bandwidth will not be stable. To solve this problem, it is necessary to control the speed of the data flow sent from the Ethernet port to the TDM port. This control method is called flow control for short. [0003] In the current existing technology, there are mainly three flow control schemes: [0004] Existing technology 1, out-of-band hard fl...

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Problems solved by technology

However, since this algorithm needs to use the timer resources of the processor, the process is very complicated, and the overhead of the processor needs to be greatly increased, and a good flow control effect cannot be guaranteed.

[0007] In short, there is no existing technology that can reduce the traffic fluctuation from the Ethernet port to the TDM port and improve the bandwidth stability between the Ethernet port and the TDM port with low cost and processing overhead

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