Port Security of Access Layer Switches
Port Security is a layer 2 access control feature that allows network administrators to control which devices can connect to a specific switch port. It does this by restricting the MAC addresses allowed on that port and defining how the switch reacts to unauthorized devices. Let's consider the following example. Imagine an open office space with desks everywhere. What stops someone with access to the office from unplugging a device at an empty desk and plugging their rogue device into the wall jack, as shown in the diagram?Catalyst Integrated Security Features (CISF) includes private VLANs, port security, DHCP snooping, IPSource Guard, secure Address Resolution Protocol (ARP) detection, and dynamic ARP inspection. [pdf]FAQs about Port Security of Access Layer Switches
How to Configure Port Security
To configure port security we need to access the command prompt of switch. Click Switch and click CLI and press Enter Key.Port can be secure from i...
Switchport Port-Security Violation
We need to specify what action; it should take in security violation. Three possible modes are available:Protect: - This mode will only work with s...
Switchport Port Security Example
In our topology PC0 is connected with F0/1 port of switch. Enter following commands to secure F0/1 port.Following table explains above commands in...
Switchport Port Security Testing
In our topology we have one additional PC. Assume that, this is the cracker's PC. To gain unauthorized access in network he unplugged the Ethernet...
Function of Protective Sleeves for Aerial Optical Cables
Protection sleeves safeguard cables from mechanical damage, UV radiation, moisture, and temperature fluctuations, significantly extending the lifespan of outdoor fiber optic cables. Fusion splicing is a process where two optical fibers are aligned and then joined together by melting. A fiber optic cable protection sleeve is a specialized covering designed to safeguard optical fibers from physical damage, environmental hazards, and operational stress. These compact yet essential devices play a key role in protecting fusion splices, ensuring stable and durable network performance. Yet, outdoors, they face temperature swings, moisture, UV exposure, rodents, and human interference. Protecting them is essential for long-term reliability. [pdf]
Function of Parallel Distribution Boxes
Its primary purpose is to ensure safe and efficient power distribution while providing protection via fuses or circuit breakers against overloads and short circuits. Distribution boxes are built with durable materials, typically metal or high-grade plastic, designed to endure. Important Instructions Warning! All electrical installations must be carried out in accordance with the local electrical standards. All operations described in this manual only can be performed by quali ed electricians. The hub distributes electrical power from a single input source to various circuits throughout a building. Surge protective device (SPD): Protects equipment from voltage spikes and surges. [pdf]
Function of fiber optic cable tail fiber fastener
A tail fiber, also known as a fiber optic patch cord, consists of a connector on one end and a cut end of the fiber optic cable core on the other. By combining factory-installed connectors with spliced bare fiber, pigtails ensure that network installers can create fast, reliable, and cost-effective terminations. Get the wrong connector type, the wrong polish, or skip proper fusion splicing technique—and you're looking at elevated signal loss, increased back reflection, and a. A fiber optic pigtail is a type of fiber optic cable with only one end that has a factory-terminated connector and the other end exposed as bare fiber. This essential function of pigtail fiber is. In fiber optic communication systems, optical cables are used to transmit light signals over long distances. [pdf]