Month: July 2019

A switch with various network cables tangled on a wooden surface for Subnetting, branded with the NetworkUstad logo
CCNA July 15, 2019

Subnetting Unveiled: Master the Art of Network Segmentation 2025

Subnetting allows a network administrator to create a smaller network known as sub-networks or subnets inside a large network by borrowing bits from the Host ID portion of the address. It implements and manages a practical IP addressing plan by partitioning a single physical network into more than one smaller logical sub-network (subnets), enhancing control […]
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Screenshot of Windows Command Prompt showing ping results for 127.0.0.1 and ::1 loopback addresses with IPv4 and IPv6 statistics.
CCNA July 14, 2019

Importance of Ping and Traceroute – Exclusive Guide 2025

Ping and traceroute are foundational tools for network troubleshooting, widely utilized in CCNA and CCNP certifications. These utilities leverage ICMP (Internet Control Message Protocol) to diagnose connectivity, latency, and routing issues, making them indispensable in both lab environments and real-world network management. For CCNA students, mastering ping helps verify host reachability, while CCNP students can […]
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Hand pointing to a "Search" button next to "ICMPv6 NS and RA Messages" text, representing a guide to Neighbor Solicitation and Router Advertisement in IPv6 networks.
CCNA July 13, 2019

ICMPv6 NS and RA Messages: Boost Your CCNA Skills With This Details Guide and Interactive Simulator!

The Internet Control Message Protocol (ICMP) is a critical component of the IP suite, used for error reporting, diagnostics, and network management. While ICMPv4 supports IPv4 networks, ICMPv6 is its enhanced counterpart for IPv6, introducing new features like the Neighbor Discovery Protocol (NDP). For CCNA and CCNP students, understanding ICMP is essential for configuring and […]
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Orange blocks spelling Internet Control Messaging Protocol (ICMP) on a gradient brown background.
CCNA July 12, 2019

Internet Control Messaging Protocol (ICMP)- The Ultimate Guide for Network Success with ICMPv4 Debug Simulator in 2025

The Internet Control Messaging Protocol (ICMP) is a critical network layer protocol within the TCP/IP suite, enabling error reporting and diagnostics for IPv4 and IPv6. An Internet Protocol (IP) is unreliable because it does not provide messages to be sent in the event of specific errors. The Internet Control Message Protocol (ICMP) services send messages […]
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Hand pointing to IPv6 diagram with OUI, Device ID, FFFE, and Interface ID elements on a screen.
CCNA July 12, 2019

EUI-64 Process and Randomly Generated IPv6- Easy to understand Guide

After a client receives a Stateless Address Autoconfiguration (SLAAC) message, often via a stateless Router Advertisement (RA), it must generate its Interface ID. Unlike stateful DHCPv6, SLAAC provides the prefix portion (typically /64) from the RA, while the client autonomously creates the 64-bit Interface ID. This ID can be derived from the MAC address using […]
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