In network engineering, why is checking the link state important after installing a new switch?

Checking the link state after installing a new switch is crucial to confirm that the switch is connected properly. The link state provides information about the connectivity between the switch and other network devices. When a new switch is added to the network, it needs to establish physical connections with other devices, such as routers or other switches. If the link state shows that the connections are operational, it indicates that the cabling, ports, and configurations that allow device communication are functioning correctly.

Proper connection is fundamental since even a minor issue, such as a loose cable or incorrect port selection, can prevent the switch from participating in the network. Therefore, confirming that the switch is connected properly ensures that it can start to function within the network environment, facilitating data traffic as intended.

While ensuring the switch is powered on is an important step, it does not provide the complete picture of network connectivity. Verifying the switch configuration is also necessary, but it is a separate task that ensures the switch is set up to perform its intended functions, rather than confirming the physical connection. Monitoring network traffic is vital for maintenance and performance tuning but does not directly relate to the immediate task of ensuring connectivity after installation.