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which model are you talking about? Some switches can accept hotplug operation but some of them no...
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I want to install 24 port module in slot 6<br />
Is there any risk installing module with switch running.??
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I want to install 24 port module in slot 6
Is there any risk installing module with switch running.??

Install Module

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.