Port expander pe downlink port control method and device

Abstract

The present application provides a method and a device for controlling a downlink port of a port expander PE. In the present invention, the first port identification table and the second port corresponding to the PE respectively indicate the downlink port that needs to be closed and the downlink port that needs to be kept up when the PE goes offline when the uplink port goes offline. When the uplink port goes off the line, the PE Based on the first port identification table, the downlink ports that need to be closed on the current PE are closed, and the downlink ports that continue to be up on the current PE are kept up based on the second port identification table. The port can prevent the services required by the local Layer 2 mutual access of the PE from being interrupted because the PE goes offline.

Description

Technical field [0001] This application relates to network communication technology, and in particular to a method and device for controlling a downstream port of a port extender (PE: Port Extender). Background technique [0002] In the Vertical Converged Framework (VCF: Vertical Converged Framework), devices are divided into PE and Controlling Bridge (CB: Controlling Bridge) according to their roles. [0003] The PE locally has an uplink port and a downlink port. The uplink port is the port connected to the CB on the PE, such as figure 1 Port1_1, Port1_2, Port2_1, Port2_2 on PE2 are shown on PE1; the downstream port is the port through which PE accesses the user side, such as figure 1 Port1_10 on PE1, Port1_11 on PE1, Port1_12 on PE1, Port2_10 on PE2, Port2_11 on PE2, and Port2_12 on PE2 are shown. [0004] The CB has at least a Cascade Port locally. The cascade port on the CB is specifically the port connected to the PE on the CB, such as figure 1 Port1_01 and Port1_02 on CB1, Por...

AI Technical Summary

Problems solved by technology

When the uplink ports of the PE go offline, the local downlink ports of the PE are all closed by default, which will cause the service required for the local Layer 2 mutual access of the PE to be interrupted because all the downlink ports of the PE are closed.

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