Network device and message forwarding method applied to the network device

Abstract

The invention discloses a network device and a message forwarding method applied to the network device. Through application of the device and the method, data messages received by a network interface chip of an interface board from the exterior of the network device can form first uplink data message stream which is sent to a first forwarding board through a first I/O bus, and second uplink data message stream which is sent to a second forwarding board through a second I/O bus. Therefore, when the first forwarding board and the second forwarding board can realize normal forwarding, the first uplink data message stream and the second uplink data message stream can be transmitted through the first I/O bus and the second I/O bus independently at the same time, and the first uplink data message stream and the second uplink data message stream are connected with the network interface chip alternatively.

Description

technical field [0001] The invention relates to a network device and a message forwarding method used in the network device. Background technique [0002] The network equipment includes forwarding boards and interface boards, and in order to improve the reliability of forwarding, the forwarding boards can be equipped with active and standby redundancy. [0003] When the active / standby switchover of the forwarding board is required, a physical switching operation may be performed on the I / O bus between the forwarding board and the interface board. That is, the physical connection of the I / O bus between the interface board and the forwarding board degraded to the standby state is disconnected, and a new physical connection of the I / O bus is established between the interface board and the forwarding board promoted to the active state. Moreover, the forwarding board that is promoted to the active state also needs to perform initial configuration on the newly established physica...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that due to the physical switching operation of the I / O bus, the flow of data packets in the network device will be interrupted

Moreover, the initial configuration of the I / O bus after the active / standby switchover will prolong the traffic interruption time

In particular, if the I / O bus adopts the PCI-E (Peripheral Component Interconnect Express, high-speed peripheral component interconnection standard) bus, the initial configuration of the I / O bus after the master-standby switchover will greatly prolong the traffic interruption time

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