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What is the use of SFP port in switch?
An SFP port connection enables the transfer of data between two devices via an SFP transceiver and appropriate cabling. In other words, the port and its corresponding SFP transceiver allow the two devices to communicate with each other over an extended distance.
What is the maximum number of root ports that each switch can have in STP topology?
Every Spanning Tree switch must have one and only one “Root Port” (excepting the Root Bridge). This is so that there will not be a switching loop in the network.
How many root ports does STP have?
one root port
Root port—A root port is selected on all non-root bridge switches on a per-switch basis. Root ports are the switch ports closest to the root bridge, based on the overall cost to the root bridge. There can be only one root port per non-root switch.
Which is the root switch in a spanning tree?
In a switched network, the root switch is the logical center of the spanning tree topology. A spanning tree protocol uses BPDUs to elect the root switch and root port for the switched network and the root port and designated port for each switched segment. Understanding How a Switch or Port Becomes the Root Switch or Root Port
What do you need to know about spanning tree?
It’s important to only configure this command on ports that connect to end devices though. Ports connecting to other switches need to exchange spanning tree information. As the name suggests, spanning tree resolves loops in your network by creating a logical tree structure between the switches.
How to bypass the wait period in spanning tree?
You configure the command “spanning-tree portfast” on all the ports connecting to end devices like workstations. They then automatically bypass the wait period and DHCP works properly. It’s important to only configure this command on ports that connect to end devices though.
What’s the default port speed for spanning tree?
Table 7-1 Default Port Cost Values Using the Short Method Port Speed Default Cost Value Default Range 10 Mbps 100 1 to 65535 100 Mbps 19 1 to 65535 1 Gbps 4 1 to 65535