What are functions of the router port on an S series switch?

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IGMP Report and Leave messages need to be forwarded to the router port to maintain protocol correctness. If no router port is configured on the device enabled with IGMP snooping, IGMP Report messages may fail to be forwarded to the upstream device, causing a multicast traffic interruption.

Other related questions:
Functions of RS485 and MON ports on the CMU of an S series switch
The RS485 and MON ports (using RJ45 connectors) on the CMU are reserved for function expansion in the future. For example, if the switch supports external PoE, the RS485 port connects to the external PoE power module. If the switch supports external environment monitoring, the MON port connects to the sensors (such as temperature sensors and smoke sensors) as an input port for environment monitoring. The preceding functions are used as examples to describe the port functions, and they are not supported by S switches currently.

Functions of the MODE button on S series switches
The MODE button on S series switches (except the S1700) has the following functions: - For versions earlier than V200R006C10, you can change the indicator to stack mode and show the stack ID. - For V200R006C10 and later versions, you can hold down the MODE button for 6 seconds to start the web initial login mode.

What is the function of the cluster priority on S series modular switches
For S series modular switches, the clustering priority of a member switch determines the role of the member switch in role election. A larger value indicates a higher priority and higher probability that the member switch is elected as the master switch. However, if a switch with a high priority starts slowly, it cannot be the master switch. If you want a switch to be the master switch, start the switch first. Election rules for an S series master switch: 1. The switch that starts and enters the single-chassis CSS state first becomes the master switch. 2. If the two switches complete startup at the same time, the switch with a higher priority becomes the master switch. 3. If the two switches complete startup at the same time and have the same priority, the switch with a smaller MAC address becomes the master switch. 4. If the two switches complete startup at the same time and have the same priority and MAC address, the switch with a smaller CSS ID becomes the master switch.

Functions of the CMU on S series switches
The CMU on an S series switch is used to centrally manage power and fan modules of the system. The CMU provides the following fan module management functions: - Fan module presence detection - Fan module registration management - Fan speed query - Fan speed control - Management and report of fan module alarms - Query of fan module electronic labels The CMU provides the following power module management functions: - Power module presence detection - Automatic shutdown of power module - Power module registration management - Voltage and current detection of power module - Management and report of power module alarms - Query of power module electronic labels

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