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For questions about network switches, the term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model.

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Switch port with multiple devices

If you want to add multiple devices to your network, I suggest to use Switch instead of HUB, switches have been invented to resolve many problems caused by HUB like "one single big collision domain, one … hub in your network if you can afford switch. …
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-1 votes

Does LLDP support traversing through multiple switches?

Media Endpoint Discovery that is an enhancement of LLDP, known as LLDP-MED, may help you doing that.
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Checking the binding of IP/MAC addresses for a device

ICMP is a protocol used to report problems or issues with IP packets (or datagrams) on a network. The most popular use of ICMP is to send ping packets to test the network connectivity of remote hosts. …
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HSRP Issue Both sides are active ( Layer 3 4300 X serires)

In this situation, you don't actually have load balancing, both routers are set with a priority of 100, you should set a higher priority like 110 to the one you would like to become the active router. …
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