Operating principles of S series switches

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1. A switch generates a mapping between the source MAC address of a received data frame and the receiving interface, and adds the mapping to the MAC address table.
2. The switch searches for the destination MAC address of the frame in the MAC table to determine through which port to forward this frame.
3. If the destination MAC address is not found in the MAC address table, the switch forwards the frame to all its interfaces except the interface that receives the frame. The process is called flooding.
The broadcast and multicast frames are forwarded to all the interfaces.

Other related questions:
What is the operation principle of Kafka?
Producers publish data to Kafka topics, and Consumers subscribe to the topics and consume messages.

Working principle of BFD for IS-IS on S Series switches
Q: What is the working principle of BFD for IS-IS? A: Bidirectional Forwarding Detection (BFD) is a simple hello protocol and similar to the Hello protocol of IS-IS in many aspects. Two systems periodically send BFD detection packets on the session channel between them. If one system does not receive any BFD detection packet from its peer within a certain period of time, the system considers that the bidirectional channel to the neighboring system is faulty. IS-IS, in conjunction with BFD, can fast detect neighboring status. In this manner, IS-IS devices can fast converge routes.

What is the operation principle of Streaming?
A Streaming topology can be developed and compressed into a JAR file by using Storm APIs or referring to the CQL syntax manual. After the topology is submitted to the Streaming cluster, Nimbus automatically assigns it to the Supervisor node for processing. The topology logs can be viewed on the UI through the port provided by Logviewer.

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