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Asad Ijaz

Hey there, I'm Asad Ijaz Khattak, and I'm not your typical writer and blogger – I'm the voice behind the scenes at the renowned website, "" When it comes to the digital realm, I'm all about technology, networking, and cybersecurity. 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!"


  1. Controlling Broadcast Domains with VLANs » Networkustad
    August 13, 2019 @ 12:44 pm

    […] the broadcast frame was received. Because the whole network is configured in the same subnet and no VLANs are configured therefore all ports are working in the same broadcast […]


  2. Tagging Ethernet Frames for VLAN Identification » Networkustad
    August 13, 2019 @ 1:36 pm

    […] Tagged Frames on the Native VLAN […]


  3. VLAN ID Range Explained » Networkustad
    August 16, 2019 @ 12:03 pm

    […] Cisco Catalyst switches support different numbers of VLANs. The number of supported VLANs is enough to accommodate the requirements of nearly all […]


  4. VLAN Configuration – Cisco Switches » Networkustad
    August 16, 2019 @ 6:04 pm

    […] the previous article, we have discussed the normal and extended-range VLANs. Normal range VLAN configuration is stored in vlan.dat file, which located in flash memory on the […]


  5. VLAN Trunk » Networkustad
    August 17, 2019 @ 9:54 am

    […] that carry data from multiple local area networks (LANs); or virtual LANs (VLANs) across a single interconnect between switches or routers, called a trunk […]


  6. Configuring IEEE 802.1q Trunk » Networkustad
    August 17, 2019 @ 7:03 pm

    […] VLAN trunk link carries multiple VLAN traffic between multiple switches unless we restrict the traffic […]


  7. IP Addressing Issues with VLAN and SVI » Networkustad
    August 18, 2019 @ 5:18 am

    […] VLAN in the network required a unique IP subnet because two devices in the same VLAN with different […]


  8. VLAN Attacks » Networkustad
    August 18, 2019 @ 2:12 pm

    […] explained how trunks work. By default, trunk ports can use all VLANs and pass traffic for multiple VLANs across the same physical link between switches. The VLAN simplify network administration and […]


  9. What is Inter-VLAN Routing? » Networkustad
    August 24, 2019 @ 11:02 am

    […] know that VLANs segment network switch into different portions and assign a different subnet to each VLAN. Switches […]


  10. Legacy Inter-VLAN Routing » Networkustad
    August 24, 2019 @ 12:54 pm

    […] we learned that each VLAN is usually working on its subnet. The network switches mainly work at layer 2 of the OSI model, so […]


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