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New switch partitions VLANs for access to the switch
Now, after separating the network into different VLANs, this means that we have created separate broadcast domains(one for each VLAN) and now hosts within the same VLAN can freely communicate between them (provided they bel. Now, after separating the network into different VLANs, this means that we have created separate broadcast domains(one for each VLAN) and now hosts within the same VLAN can freely communicate between them (provided they belong also in the same Layer 3 subnet). On the other hand, hosts that belong in different Layer 2 VLANs can't communicate between. Switch 1 Configuration: ! Create VLANs 2 and 4 in the switch database Switch1# configure terminal Switch1(config)# vlan 2 Switch1(config-vlan)# name Accounting Switch1(config-vlan)# end Switch1(config)# vlan 4 Switch1(config-vlan)# name Engineering Switch1(config-vlan)# end ! Assign Ports Fe0/1 and Fe0/2 in VLAN 2 Switch1(config)# interface fasteth. If you want to verify that the physical interfaces are assigned properly to each VLAN, then run the following show commands: SWITCH1#show vlan SWITCH2#show vlan. -
Fiber Optic Cable PLC
Modern fiber optic communication systems require PLC (Planar Lightwave Circuit) fiber splitter cables, which are an essential part of the system. These cables are used to split optical signals into various pathways, enabling the distribution of the signals to various devices. Fiber optics solves this fundamental problem because light signals are immune to electrical noise—no matter how many motors, VFDs, or welding machines operate nearby. Distance becomes irrelevant with fiber. -
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How to install the optical module top and bottom
For SFP modules, the latch is usually on the bottom; for QSFP modules, it may be on the side or top—familiarize yourself with your transceiver model's design. Golden rule: No click, no link. What happens: You hold the module by its bottom edge, and your fingers brush the gold-plated contact fingers—the part that inserts into the switch port. So how do you use SFP+ optical modules correctly? In addition to choosing the right model, you need to know how to install and remove the SFP+. SFP module installation and removal are straightforward processes. The wrong operation will reduce the service life of the modules. The method used to install a copper transceiver module is the same, except that the copper transceiver module connects to a network cable instead of optical fibers. -
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