Author: Asad Ijaz

NetworkUstad's lead networking architect with CCIE certification. Specializes in CCNA exam preparation and enterprise network design. Authored 2,800+ technical guides on Cisco systems, BGP routing, and network security protocols since 2018. Picture this: I'm not just someone who writes about tech; I'm a certified expert in the field. I proudly hold the titles of Cisco Certified Network Professional (CCNP) and Cisco Certified Network Associate (CCNA). So, when I talk about networking, I'm not just whistling in the dark; I know my stuff! My website is like a treasure trove of knowledge. You'll find a plethora of articles and tutorials covering a wide range of topics related to networking and cybersecurity. It's not just a website; it's a learning hub for anyone who's eager to dive into the world of bits, bytes, and secure connections. And here's a fun fact: I'm not a lone wolf in this journey. I'm a proud member and Editor of Team NetworkUstad. Together, we're on a mission to empower people with the knowledge they need to navigate the digital landscape safely and effectively. So, if you're ready to embark on a tech-savvy adventure, stick around with me, Asad Ijaz Khattak. We're going to unravel the mysteries of technology, one article at a time!"
Wireless technologies ecosystem showing smartphones, routers, and IoT devices interconnected via radio waves and cellular signals.
CCNA November 15, 2019

Wireless Technologies in 2025: What’s New, What’s Changed, and What’s Next

Wireless technologies refer to technology that makes it possible to communicate over a distance without using wires or any other conductors. We can use wireless technologies for both long and short distances. Wireless technologies networks are based on electromagnetic waves, such as radio frequencies (RF), infrared (IR), satellites, etc. Remember when Wi-Fi was a luxury […]
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CCNA November 14, 2019

What is Wireless? Exclusive Introduction

Wireless Communication is the fastest-growing and most vibrant technological area in the communication field. It can provide client mobility, the ability to connect from any location and at any time, and the ability to roam while staying connected. It is the technique of transmitting information from one point to another without using any connection like […]
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CCNA November 13, 2019

How to configure EtherChannel?

In this lesson, I am going to configure EtherChannel. EtherChannel in networking has a set of restrictions that state what you can do and what you cannot do. Before configure and establish the EtherChannel, it is important to know the restrictions. Here are some basic restrictions and guidelines on setting up EtherChannel: EtherChannel support– Ethernet […]
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CCNA November 8, 2019

How to Configure PAgP and LACP

EtherChannel is used to bundle physical links into a single logical link. We can bundle a maximum of 8 physical links into one logical link. When physical links are bundled into a single logical link, the STP only sees one and cannot block anything. Two types of protocols are used for EtherChannel: Port Aggregation Protocol […]
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CCNA November 6, 2019

EtherChannel Exclusive

We can implement EtherChannel by bundling multiple physical ports into one or more logical Ether Channel links. The interface speed and type for a single EthernetChannel must be same. The EtherChannel provides maximum 800 Mbps full-duplex speed in case of Fast EtherChannel and or 8 Gbps speed in case of Gigabit EtherChannel between one switch […]
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CCNA November 5, 2019

What is Link Aggregation?- Exclusive Introduction

Link aggregation is the capability to produce one logical link using several physical links between two devices. Network devices and management functions care for the link aggregation group (LAG) of multiple Ethernet connections as a single link. Link aggregation allows load sharing among the multiple physical links, rather than having STP block one or more […]
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CCNA November 3, 2019

How to configure Virtual Router Redundancy Protocol

Virtual Router Redundancy Protocol (VRRP) is very similar to HSRP and can create a virtual gateway but the difference that it is not the Cisco Proprietary Protocol. It is a standard protocol defined by the IETF in RFC 3768. If you learn and understood HSRP then it is very easy for you to understand the […]
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CCNA November 3, 2019

How to Configure the Gateway Load Balancing Protocol?

Gateway Load Balancing Protocol (GLBP) is the Cisco-proprietary FHRP. It also allows load sharing between a group of redundant routers. GLBP was specially designed to overcome the limitations of HSRP and VRRP. In HSRP and VRRP, only the active/master router can forward traffic while all the standby/backup routers are idle but Gateway Load Balancing Protocol […]
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CCNA November 2, 2019

How to configure HSRP?- Exclusive Explanation

HSRP is a Cisco-proprietary First Hop Redundancy Protocol (FHRP) planned to allow for transparent failover of a first-hop IPv4 device. It allows configuring two or more routers as standby routers and only a single router as an active router at a time which ensure high network availability by providing first-hop routing redundancy for IPv4 hosts […]
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A graphic representation emphasizing ‘Understanding FHRP’ with a 3D globe surrounded by networking icons, highlighting key concepts for CCNA students.
CCNA November 1, 2019

What is FHRP? – Exclusive Explanation

When the active router fails, the First Hop Redundancy Protocol (FHRP) changes the standby router to an active router. If the active router fails, the standby router stops seeing Hello messages from the forwarding router. Then, the standby router assumes the role of the forwarding router because it assumes both the IP and MAC addresses […]
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