Tag Archives: networking

Cloudflare CDN Walkthrough – Benefits, Configuration, Traffic Flow, and Performance

Posted on April 1, 2022 by Humair

Checkout my latest video on Cloudflare CDN embedded below or directly on the Cloudflare YouTube channel here. The Cloudflare CDN is SaaS that helps address the challenges customers face around latency, performance, availability, redundancy, security, and costs. In this video … Continue reading →

VMworld 2019 Sessions – VMware Cloud on AWS Networking and Security

Posted on December 8, 2019 by Humair

VMworld 2019 was my fifth year presenting at both the US and Europe VMworlds. Presenting at VMworld has always been something I look forward to every year, and this year was no exception. Like usual, this year, my calendar for … Continue reading →

Posted in Amazon, AWS, AWS, Network Architecture, Network Security, Networking, Security, Tech Events, Technology, Virtualization and Cloud Computing, VMware, VMware, VMware, VMware Cloud on AWS, VMworld 2019 | Tagged ahmed, Author, Author Humair Ahmed, AWS, Book signing, Buy VMware Press book, cloud, cloud book, CNET1219BE, CNET1219BU, Free book, HBI1223BE, HBI1223BU, humair, Humair Ahmed, multi-site, multi-site book, Multisite, multisite book, networking, Networking and Security Design, networking security, NSX, NSX Networking and Security, NSX-T Networking and Security Deep Dive, security, vmware, VMware book signing, VMware Cloud, VMware Cloud on AWS, VMware Cloud on AWS Networking and Security, VMware Cloud on AWS NSX Networking and Security, VMware Cloud on AWS: Networking and Security Design, VMware Cloud on AWS: NSX-T Networking and Security Deep Dive, VMware NSX Multi-site Solutions and Cross-vCenter NSX Design, VMware NSX Multi-site Solutions and Cross-vCenter NSX Design: Day 1 Guide, VMware Press, VMworld, VMworld 2019, VMworld Europe, VMworld Europe 2019, VMworld US, VMworld US 2019 | Leave a comment

Second VMware Press Book Published – My Thoughts and Tips

Posted on August 18, 2019 by Humair

Yes, above is the very first official print I received for approval. This is my second VMware Press book, this time co-authored with Gilles Chekroun and Nico Vibert. Caught a few slight print errors last minute and sending back to … Continue reading →

Posted in Amazon, AWS, AWS, Business, Network Architecture, Network Security, Networking, Security, Tech Events, Technology, Technology, Virtualization and Cloud Computing, VMware, VMware, VMware, VMware Cloud on AWS, VMworld 2019 | Tagged ahmed, Author, Author Humair Ahmed, AWS, Book signing, Buy VMware Press book, cloud, cloud book, Free book, humair, Humair Ahmed, multi-site, multi-site book, Multisite, multisite book, networking, networking security, NSX, NSX Networking and Security, security, vmware, VMware book signing, VMware Cloud, VMware Cloud on AWS, VMware Cloud on AWS Networking and Security, VMware Cloud on AWS NSX Networking and Security, VMware NSX Multi-site Solutions and Cross-vCenter NSX Design, VMware NSX Multi-site Solutions and Cross-vCenter NSX Design: Day 1 Guide, VMware Press, VMworld, VMworld 2019 | Leave a comment

VMware Cloud on AWS: NSX Networking and Security eBook

Posted on August 1, 2019 by Humair

Check out my latest book co-authored with my colleagues Gilles Chekroun and Nico Vibert on VMware NSX networking and security in VMware Cloud on AWS. Thank you Tom Gillis, Senior Vice President/General Manager, Networking and Security Business Unit for writing … Continue reading →

Posted in AWS, AWS, Business, Network Architecture, Network Security, Networking, Security, Tech Events, Technology, Technology, VMware, VMware, VMworld 2019 | Tagged ahmed, Amazon Web Services, AWS, cloud, cloud networking, cloud security, ebook, humair, Humair Ahmed, hybrid cloud, networking, NSX, NSX Cloud, NSX ebook, NSX-T, NSX-T ebook, security, VMC, vmware, VMware Cloud, VMware Cloud on AWS, VMware Cloud on AWS ebook | 1 Comment

HumairAhmed.com – Weekly Blogs on Networking, Technology, and Silicon Valley

Posted on June 9, 2017 by Humair

I started blogging about everything Tech related back in 2008 when I moved to the Silicon Valley area (an interesting story I will write about later), because I loved technology and wanted to share my knowledge and experiences with others … Continue reading →

Posted in Blogging, Business, Humair's News Releases, Networking, Technology, Virtualization and Cloud Computing, VMware, VMware, Websites | Tagged blogging, Blogs, creativity, innovation, LinkedIn, multi-site, networking, Networking Field Day 15, NFD 15, NSX, Silicon Valley, tech, tech blog, Technology, technology blog, Twitter, vmware, VMware Network Virtualization blog, VMware NSX, VMware NSX for Multi-Site Environments with Humair | 2 Comments

XenServer, Hyper-V, and ESXi – Architecture, API, and Coding

Posted on December 24, 2012 by Humair

Below is a link to the slide deck for a presentation I gave to some friends/colleagues for a Berkeley Virtualization and Cloud Computing certification course I took in early 2012. For my final project I did a XenServer, Hyper-V, and … Continue reading →

Posted in Citrix, Java, Microsoft, Networking, Personal Presentations, PowerShell, Programming Languages, Python, Tech Events, Technology, Virtualization and Cloud Computing, VMware | Tagged ESXi, humair, Humair Ahmed, Java, networking, PowerShell, Python, Tkinter, VI API, virtualization, vmware, vSphere, Xen, XenServer, XML-RPC | Leave a comment

Multi-Area OSPF – Redundancy, Route Summarization, and LSA Filtering

Posted on July 9, 2012 by Humair

In this lab, all routers except for R4 and R5 are Cisco 3725 routers [IOS 12.4(15)T10]. Routers R4 and R5 are Cisco 7200 routers [IOS 12.4(24)T]. Below is the network diagram for this lab.

Posted in Cisco, Labs, Networking, Protocols, Technology | Tagged ABR, Area Border Router, Cisco, Cisco 3725, Cisco 3725 router, Cisco 7200, Cisco 7200 router, Multi-Area OSPF, networking, Open Shortest Path First, OSPF, OSPF ABR, OSPF Area Border Router, OSPF redundancy, OSPF summary route, redundancy, summary route | 1 Comment

Important IPv6 Addresses

Posted on May 1, 2012 by Humair

For easy reference, I’ve listed some important IPv6 address ranges below.

Posted in Networking, Protocols, Technology | Tagged important ipv4 addresses, important ipv6 addresses, ip, ip address, IPv4, ipv4 ip address, IPv6, ipv6 ip address, networking, special ipv4 addresses, special ipv6 ip addresses | Leave a comment

Possible Reasons for LAN Traffic Congestion

Posted on July 30, 2011 by Humair

If you are experiencing slowness on your LAN here are some possible reasons that you can investigate:

Posted in Networking | Tagged broadcast storms, failing router, failing switch, LAN slowness, LAN traffic congestion, low bandwidth, network issues, network loops, network slowness, networking, Reasons for LAN Traffic Congestion, slow, Traffic Congestion | Leave a comment

Functionality of Layer 2 Switches/Bridges

Posted on May 26, 2011 by Humair

Layer 2 switches and bridges switch frames on a network while layer 3 routers route packets between networks. I once heard a network engineer being asked if a network can be made faster if the network is optimized to use … Continue reading →

Posted in Networking, Technology | Tagged Address Learning, application specific integrated circuits, ASICs, bridges, bridging technologies, broadcasts, Cisco, collision domain, collision domains, datalink layer, filter table, Forward/Filter Decisions, frame, frame filtering, frames, layer 2 broadcasts, Layer 2 Switching, Loop Avoidance, MAC, MAC address, MAC address table, MAC database, Media Access Control, Media Access Control Address, multicasts, network, network layer, network loops, networking, packet, packets, routers, slow convergence, Spanning Tree Protocol, STP, switches, switching | 1 Comment