Optical module identification method and port extender

Abstract

The invention provides an optical module identification method in a Bootware stage in a longitudinal stacking system. An optical module is arranged in a PE (Port Extender), and connected with a CB (Control Bridge) via a physical link. The method comprises the steps that: a switchover instruction from a common Ethernet operation mode to a cascaded PE operation mode is received from the CB; an APP (Application) on the PE identifies and stores a type of the optical module; the PE is restarted; the type of the optical module is read via a power-on startup program on the PE; a forward unit is adapted according to the read type of the optical module; a PEX physical connection with the CB is established; then, an APP in a cascade operation mode of the PE and a corresponding version file are downloaded from the CB; the CB is restarted; and the switchover of the PE from the common Ethernet operation mode to the cascaded PE operation mode is accomplished.

Description

technical field [0001] The invention relates to the communication field, in particular to a method for identifying an optical module at the Bootware stage after a port expansion device in a vertical stacking system is switched from a normal Ethernet working mode to a cascaded Ethernet working mode and the port expansion device. Background technique [0002] A development trend of the current data center technology is to realize the port expansion of CB equipment (Control Bridge, control bridge equipment) by establishing a vertical stacking system, so as to achieve single and flat management and reduce network layers. In the process of building a vertical stacking system, in order to further realize intelligence, PE equipment (Port Extender, port expansion equipment) needs to be able to automatically switch from the normal Ethernet working mode to the cascaded Ethernet working mode after connecting to the CB equipment , that is, to realize the plug-and-play function of the PE...

AI Technical Summary

Problems solved by technology

At present, there is no general I2C read-write module interface in the power-on and start-up program of PE equipment.

If a unified I2C access unit is developed in the power-on startup program, not only is it very difficult, but it will greatly increase the complexity of the power-on startup program and reduce stability

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