Day: June 5, 2019

Cisco switch ports with Ethernet cables, illustrating Auto-MDIX automatic cable detection for straight-through and crossover connections.
CCNA June 5, 2019

Auto-MDIX Cisco: Unlock Instant Network Setup and Slash Downtime in 2025

The workstation computer or laptop port in networking is called MDI (Media Dependent Interface). In contrast, the ports on network switches are labeled MDIX (Media Dependent Interface with Crossover). This distinction is crucial in ensuring seamless communication. RJ45 jacks, the connectors attached to copper twisted pair cables, are intricately crimped to facilitate communication. The transmit […]
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Cisco switch port configuration diagram showing duplex and speed settings for Ethernet ports.
CCNA June 5, 2019

Mastering Duplex and Speed Settings for Ethernet Switches in 2025

Duplex and Speed settings are the most basic settings for each switch port. By default, Cisco switches will auto-negotiate the speed and duplex settings. However, the switch port and connected devices, such as a computer or another switch, can mismatch the duplex and speed settings. Two types of duplex settings are used for communications on an […]
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Close-up of Ethernet switch ports with data packets flowing, illustrating memory buffering concepts
CCNA June 5, 2019

Mastering Ethernet Switch Memory Buffering: Techniques for 2025 Networks

Ethernet switches employ memory buffering to manage data traffic efficiently, ensuring frames (data units) are temporarily stored when destination ports face congestion. Effective buffering is crucial to prevent frame loss, which can degrade network performance, increase latency, and trigger retransmissions, ultimately impacting user experience and reliability. This article explores buffering methods, their evolution, and their […]
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Diagram illustrating the fundamentals of network switching and its components.
CCNA June 5, 2019

Switching Fundamentals – Everything to Know

An Ethernet switch is a Layer 2 device. Therefore, the switch uses MAC addresses for switching decisions. It is unaware of the protocol being carried in the data portion of the frame, such as an IPv4 packet. The Ethernet hub repeats bits out of all ports except the incoming port, but an Ethernet switch consults […]
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