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Reliable management communications path algorithm using in-band signaling and high priority context processing
Reliable management communications path algorithm using in-band signaling and high priority context processing
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机译:使用带内信令和高优先级上下文处理的可靠管理通信路径算法
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摘要
Disclosed herein is a highly reliable management communication path to the CPU of a network device using in-band signaling by periodically servicing the Ethernet MAC, such as during system tick and/or watchdog timer refresh interrupts. The servicing selectively processes frames that are uniquely destined to or originating from a managing device. There are several possible techniques to uniquely identify frames as management frames. For example, one technique to identify a management frame involves the addition of an Ethernet MAC address to be used only for management frames, another technique employs a dedicated VLAN to be used only for management frames, a third technique employs a dedicated Layer 2 frame type for management frames, and another technique involves configuring the Ethernet MAC to operate in promiscuous mode and only process frames sent and received as unicast frames using a fixed source or destination MAC address.
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