Network Infrastructure
Network hardware and physical appliances, such as routers, switches, gateways, hubs and bridges, serve as the vital foundation of network infrastructure. Common network protocols and more emergent network software also play major roles in any architecture. While networking has shifted to software-centric principles, see how traditional network infrastructure keeps pace.
Top Stories
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Guest Post
15 Sep 2023
Hybrid work drives changes to on-premises networks
Remote and hybrid work are forcing changes to on-premises networks, such as increased bandwidth, upgraded Wi-Fi connectivity and unified network access controls. Continue Reading
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Tip
14 Sep 2023
How enterprises can migrate from IPv4 to IPv6
Both IPv4 and IPv6 are suitable for enterprise networks, but organizations that want to switch over to the latest IP address format can follow a few methods to make the transition. Continue Reading
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Tip
30 Aug 2023
FWA use cases for next-generation connectivity
Fixed wireless access provides broadband connectivity for subscribers at fixed locations. FWA use cases include locations with geographical constraints, temporary setups and more. Continue Reading
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Tip
25 Aug 2023
How to modernize networks with sustainability in mind
A network modernization project is a good time to consider sustainability initiatives, such as using energy-efficient devices and renewable energy sources. Continue Reading
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News
22 Aug 2023
VMware remakes NSX for companies using multiple clouds
VMware designed NSX+ to simplify multi-cloud networking for customers. The update will eventually replace NSX and the more advanced NSX-T within VMware Cloud. Continue Reading
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News
07 Aug 2023
SDI swaps Cisco wired, wireless LAN for Nile NaaS
Supply chain software maker SDI claims it cut LAN costs by a third with Nile. But Gartner says NaaS is unlikely to become a dominant option for on-premises networking. Continue Reading
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Answer
28 Jul 2023
Networking vs. telecom: What's the difference?
Networking describes how devices interconnect to share resources with each other. Telecom, which includes networking, broadly refers to the exchange of data across long distances. Continue Reading
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Tip
14 Jul 2023
An introduction to smartNICs and their benefits
SmartNICs offload packet processing tasks from server CPUs, freeing up resources for application performance. They can run packet capture and load balancing, among other tasks. Continue Reading
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News
14 Jul 2023
IOTech Edge Connect frees data from factory floor devices
IOTech designed Edge Connect to collect data from operational technology and send it to IT systems that monitor and control devices in manufacturing and other industries. Continue Reading
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Tip
11 Jul 2023
SmartNICs and the need for evolving network infrastructure
SmartNICs can meet the increasing demand for high performance, low latency and secure data transfer. But the implementation of smartNICs requires reliable network infrastructure. Continue Reading
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News
30 Jun 2023
Prosimo offers free multi-cloud connectivity
The new MCN Foundation can find and connect to public clouds and provide visibility. The company's full-stack product powers the limited free version. Continue Reading
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News
29 Jun 2023
Cisco to add SamKnows broadband visibility to ThousandEyes
SamKnows data in ThousandEyes will let enterprises monitor the broadband connections of employees working from home. The information can help companies troubleshoot problems. Continue Reading
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Answer
29 Jun 2023
Traditional networks vs. IoT networks: What's the difference?
An enterprise network is a system of interconnected devices that share information, while IoT is a system of devices connected to the internet that provides key analytics. Continue Reading
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Quiz
28 Jun 2023
10 edge computing quiz questions
Edge computing isn't new, but it has grown in popularity due to 5G and the influx of IoT devices. This quiz covers edge computing basics, such as pros, cons and differentiators. Continue Reading
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News
22 Jun 2023
Cisco acquires Accedian for Network Assurance portfolio
Cisco expects Accedian to bolster its Network Assurance portfolio for service providers. The product line provides network troubleshooting, root-cause analysis, and remediation. Continue Reading
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Feature
14 Jun 2023
Evaluate top 5G fixed wireless access benefits
Fixed wireless access, when enabled by 5G, makes wireless network connectivity accessible to users at affordable rates. Learn the benefits FWA brings to operators and enterprises. Continue Reading
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Conference Coverage
14 Jun 2023
Cisco Live 2023 conference coverage and analysis
Use this guide to Cisco Live 2023 -- a five-day in-person and online conference -- to learn about networking trends, including news from keynote speeches and education sessions. Continue Reading
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Feature
09 Jun 2023
New Cisco tools aim to enable green networks, data centers
At Cisco Live 2023, Cisco unveiled new products and updates to its portfolio to help organizations create sustainable data center networks as they modernize their infrastructures. Continue Reading
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Guest Post
09 Jun 2023
The networking imperative for AI applications
Networking is vital to support the requirements of AI applications. Technologies such as smartNICs and RDMA can improve efficiency and scalability. Continue Reading
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News
06 Jun 2023
Cisco releases plans for Networking Cloud
Cisco's introduction of Networking Cloud lacked technical details and delivery dates for the high-level console for accessing all the company's network management platforms. Continue Reading
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Tip
31 May 2023
How to interact with network APIs using cURL, Postman tools
Network engineers can use cURL and Postman tools to work with network APIs. Use cases include getting interface information and manipulating device configuration data. Continue Reading
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Tip
31 May 2023
Modular network design benefits and approaches
Modular network design is a strategic way for enterprises to group network building blocks in order to streamline network maintenance, additions and troubleshooting. Continue Reading
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Feature
31 May 2023
An overview of 802.1X authentication methods and EAP
Enterprises use 802.1X authentication to manage their wireless LANs, and that process relies on the Extensible Authentication Protocol and its various types. Continue Reading
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Tip
18 May 2023
9 ways to make network modernization work
More cloud computing, container networking and network capacity are some of the ways businesses could modernize their networks. AI and automation can help, too. Continue Reading
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News
16 May 2023
SONiC NOS faces challenges fitting in with mainstream
Gartner estimates that fewer than 200 enterprises have SONiC in production, out of a potential data center market of 100,000. One startup describes the NOS as 'a mess' to deploy. Continue Reading
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Feature
16 May 2023
12 common network protocols and their functions explained
Networking makes the internet work, but neither can succeed without protocols. Common network protocols and their functions are key for communication and connection across the internet. Continue Reading
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Feature
10 May 2023
LA County Registrar's network extends voting accessibility
LA County Registrar's modernized network uses technologies such as 5G, SD-WAN and AI in voting centers across the county to make voting more accessible to constituents. Continue Reading
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Opinion
09 May 2023
Aruba Atmosphere '23 emphasizes agility matters
HPE Aruba Networking positioned its Atmosphere conference as looking at what comes next, but the subtext was all about agility as the company tightens its integration. Continue Reading
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Tip
08 May 2023
7 factors to consider in network redundancy design
Network pros should consider multiple factors when adding redundancy to network design, including network equipment, protocols, backup, processing and subnet connections. Continue Reading
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News
03 May 2023
Baptist Health leaves Cisco for Arista
Baptist Health in Jacksonville, Fla., expects Arista's single wired, wireless and data center network operating system to eliminate partial outages during infrastructure upgrades. Continue Reading
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Tip
28 Apr 2023
5 steps to achieve UC network modernization for hybrid work
The shift to hybrid work is putting new demands on the unified communications network infrastructure. Split tunneling and an enterprise CDN are two ways to meet those needs. Continue Reading
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Tip
24 Apr 2023
Smart contracts, blockchain and decentralized computing
Industries such as manufacturing and finance are turning to decentralized computing technologies, in the form of smart contracts and blockchains, to solve complex problems. Continue Reading
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Answer
24 Mar 2023
Beyond metrics, network SLAs should measure business ops
Enterprises need to ensure network service-level agreements provide a comprehensive view of network service performance to support business operations. Continue Reading
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Feature
23 Mar 2023
Explore private wireless network vendor options
Private wireless networks can be difficult to deploy. Networking vendors -- such as Celona, Cradlepoint and Extenet -- offer services that could simplify the process. Continue Reading
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Tip
21 Mar 2023
5 steps to migrate from MPLS to SD-WAN
To migrate from MPLS to SD-WAN, you need a plan. Use these five steps as a guideline to avoid MPLS contract disasters, unexpected costs and delayed installation. Continue Reading
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Tip
20 Mar 2023
Configure NIC teaming in Windows Server
NIC teaming maximizes network bandwidth and provides redundancy benefits. These steps guide users through NIC teaming configuration in Windows Server with GUI and PowerShell. Continue Reading
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Tip
10 Mar 2023
White box networking use cases and how to get started
Rising cloud costs have prompted organizations to consider white box switches to lower costs and simplify network management. Here's what to know about white box networking. Continue Reading
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Quiz
06 Mar 2023
9 practice questions on twisted-pair network cables
Take this practice quiz on twisted-pair cables, sampled from 'Networking Essentials: A CompTIA Network+ N10-008 Textbook,' to test your understanding for the certification exam. Continue Reading
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Feature
06 Mar 2023
An introduction to twisted-pair cable wiring
This excerpt from 'Networking Essentials: A CompTIA Network+ N10-008 Textbook' provides an overview of twisted-pair network cables and acts as a study tool for the exam. Continue Reading
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Feature
06 Mar 2023
Considerations for configuring twisted-pair cables
In this Q&A, author Jeffrey Beasley discusses what students who plan to take the CompTIA Network+ exam should know about twisted-pair cables, from configuration to troubleshooting. Continue Reading
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Tip
24 Feb 2023
A primer on hyperscale data centers
Hyperscale data centers can hold thousands of servers and process much more data than an enterprise facility. However, they can be difficult to build and maintain. Continue Reading
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News
21 Feb 2023
Technology trends behind Cisco, Arista earnings
Cisco and Arista's latest earnings reports show that companies are upgrading campus networks and distributing more applications across cloud and edge environments. Continue Reading
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News
14 Feb 2023
Extreme Networks extends network fabric to the edge
Extreme Networks extends its SD-WAN network fabric to the edge to unify wired, wireless and WAN networking for simpler network control and more application performance monitoring. Continue Reading
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Opinion
10 Feb 2023
How hybrid access as a service supports hybrid work
Hybrid access as a service from a startup helped a global company secure optimized connectivity over home broadband connections. Could HAaaS replace VPNs? Continue Reading
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Feature
30 Jan 2023
The features of multi-cloud networking architecture
Enterprises are looking for multi-cloud networking features that include programmability, security integration and end-to-end visibility in a consumption-based model. Continue Reading
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Tip
20 Jan 2023
How cloud-managed Wi-Fi simplifies policy and AP controls
Cloud-managed Wi-Fi provides IT groups with several benefits, including policy enforcement, network management and consistent AP configuration across multiple sites. Continue Reading
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Feature
18 Jan 2023
Enterprises consider NaaS adoption for business agility
As enterprises accelerate toward digitization of their complete IT stack, NaaS -- which can lower costs, increase QoS and improve business agility -- has become a viable option. Continue Reading
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Tip
11 Jan 2023
A guide to network APIs and their use cases
An API enables communication between two applications, while a network API provides communication between the network infrastructure -- and its protocols -- and applications. Continue Reading
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Opinion
06 Jan 2023
Five networking trends teams should focus on in 2023
Distributed IT and hybrid work create network complexity, which is driving adoption of AIOps, network and security convergence, multi-cloud, private 5G and digital twins in 2023. Continue Reading
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News
03 Jan 2023
Multi-cloud networking trends to watch in 2023
As multi-cloud networking becomes an industry standard, enterprises increasingly seek tools to wrangle data, services and security in a sprawling network that can span countries. Continue Reading
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Feature
22 Dec 2022
Are private wireless networks worth the investment?
Private wireless networks enable more control over networks, but they aren't right for every organization. Here's what to evaluate for a private wireless network deployment. Continue Reading
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News
20 Dec 2022
Arista's new switches support 800GbE for hyperscalers
Arista's new switches provide more options for enterprises and higher speeds for bandwidth-hungry hyperscalers. The latest hardware is generally available. Continue Reading
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Feature
20 Dec 2022
5 sustainability initiatives in the telecommunications industry
Telecom operators have committed to sustainability plans to reduce carbon emissions and energy use. But they also face challenges, like competing goals and behavioral changes. Continue Reading
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News
14 Dec 2022
T-Mobile expands fastest 5G coverage to 260 million
T-Mobile has expanded its mid-band 5G coverage across most of the nation, pulling further ahead of rivals Verizon and AT&T. Continue Reading
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Tip
13 Dec 2022
An overview of wireless WAN
Hybrid work, modernized cellular networks, and the convergence of 5G and software-defined networking are driving factors in the maturation of wireless WAN. Continue Reading
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News
09 Dec 2022
Juniper's CN2 supports Kubernetes networking on AWS
Juniper simplifies Kubernetes networking on Amazon's Elastic Kubernetes Service by adding virtual networks and multi-dimensional segmentation in the hybrid cloud. Continue Reading
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Tip
09 Dec 2022
Ensure network resilience in a network disaster recovery plan
A network disaster recovery plan doesn't always mean network resilience. Learn how factors like funding, identifying potential risks and constant updates make a difference. Continue Reading
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News
28 Nov 2022
Ciena acquires Benu and Tibit for PON, edge
Ciena acquires Benu for advanced subscriber management and Tibit for pluggable PON technology that connects to existing hardware. Acquisitions bring engineers during shortage. Continue Reading
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News
18 Nov 2022
Cisco lays off staff, cuts office space in $600M restructuring
Cisco's shake-up will affect about 4,000 workers as the company doubles down on security, enterprise networking and its platform strategy. Continue Reading
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Answer
18 Nov 2022
How to set up backup internet connections for home offices
Reliable connectivity and secure access are must-haves for employees working from home. Here are ideas to consider when designing backup internet connections for home offices. Continue Reading
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Tip
16 Nov 2022
3 types of wireless site surveys and how to conduct them
Network teams can avoid signal coverage issues by performing different wireless site surveys as they evaluate new spaces, set up sites and operate the network. Continue Reading
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Opinion
15 Nov 2022
The multi-cloud networking mandate
With most organizations using more than two public clouds, new multi-cloud networking strategies are essential to enable cross-cloud traffic and visibility across multiple clouds. Continue Reading
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Answer
10 Nov 2022
What is the difference between WLAN and Wi-Fi?
Although the terms WLAN and Wi-Fi are used interchangeably, the two wireless technologies differ. Wireless LAN uses radio technology to connect nodes, while Wi-Fi is a type of WLAN. Continue Reading
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Answer
09 Nov 2022
IPv4 vs. IPv6: What's the difference?
IPv4 and IPv6 are two forms of IP addresses, but they differ in length and style. Compare the two, and find out why organizations might implement one over the other. Continue Reading
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Tip
07 Nov 2022
Include VXLANs in data centers for quicker network speeds
VXLANs add network isolation and enable organizations to scale data center networks more efficiently. Consider VXLANs to expand a data center network and improve performance. Continue Reading
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Answer
07 Nov 2022
Wireless access point vs. router: What's the difference?
The choice of a wireless access point vs. a router for wireless network connectivity depends on the physical size of the network, needs of the organization and the number of users. Continue Reading
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Tip
04 Nov 2022
Troubleshoot wireless network connection problems in 10 steps
When troubleshooting wireless network issues, several scenarios can emerge. But valuable end-user insights can help network administrators root out problems. Continue Reading
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Tip
28 Oct 2022
What's the difference between 802.11ac vs. 802.11ax?
The difference between 802.11ac and 802.11ax is significant. The two wireless standards differ notably in features such as AP capacity, spatial streams and data rates. Continue Reading
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Tip
25 Oct 2022
The 4 different types of wireless networks
The four types of wireless networks -- wireless LAN, wireless MAN, wireless PAN and wireless WAN -- differ when it comes to size, range and connectivity requirements. Continue Reading
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Tip
24 Oct 2022
How to set up a VPN for enterprise use
VPNs are nearly ubiquitous, but does your organization know how to deploy one? Learn about use cases, requirements, deployment options and best practices for VPN deployment. Continue Reading
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Tip
17 Oct 2022
How to perform VLAN troubleshooting
Common VLAN issues include physical connectivity problems, duplex mismatches, forwarding loops, unicast flooding and Layer 3 configuration errors. These troubleshooting steps can help. Continue Reading
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Tip
11 Oct 2022
DPUs vs. SmartNICs: What storage admins need to know
To determine whether a SmartNIC or DPU is right for their organization, admins must understand the capabilities of different kinds of NICs and DPUs. Continue Reading
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Tip
03 Oct 2022
4 tips for network capacity planning and provisioning
To avoid network overprovisioning, teams should review baselines and roadmaps, assess limitations and consider business strategy changes when focusing on network capacity planning. Continue Reading
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Feature
12 Sep 2022
How AI and ML in Open RAN alleviates network complexity
Incorporating AI and ML into Open RAN networks could help MNOs simplify operations and deliver 5G enhanced capabilities of high bandwidth, low latency and quality of service. Continue Reading
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Tip
01 Sep 2022
DNS server troubleshooting for Linux and Windows
Steps in DNS server troubleshooting include checking the DNS status, looking at zone configurations and evaluating logs. Follow these best practices for Windows and Linux servers. Continue Reading
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Tutorial
01 Sep 2022
How to create and add an SPF record for email authentication
Learn how to create Sender Policy Framework records to list authenticated mail servers for an email domain to fight spam, phishing, email forgery and other malicious email. Continue Reading
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News
31 Aug 2022
VMware CEO reveals big changes amid multi-cloud shift
VMware plans to change products, strategic direction and marketing to keep up with customers rushing to deploy multi-cloud architectures. Continue Reading
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Tip
19 Aug 2022
How does SD-access work?
SD-access is a combination of two elements: SDN and the access edge. The result is a network with a centralized management system and improved security policies. Continue Reading
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News
18 Aug 2022
Cisco earnings improve with easing supply shortage
Cisco expects component shortages to continue through fiscal 2023, holding revenue growth to between 4% and 6%. Component prices could ease after the current quarter. Continue Reading
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Tip
17 Aug 2022
VXLAN vs. VLAN: What's the difference?
VLANs offer security and traffic management benefits but have limitations in routing and scale. VXLANs address those challenges by creating a Layer 3 network overlay. Continue Reading
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Tip
16 Aug 2022
Understanding the FTP PORT command
FTP uses control and data channels, each using a separate TCP port. Port 21 is for the control channel, and port 20 is for the data channel. Learn how these two channels are used. Continue Reading
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Tutorial
10 Aug 2022
Learn to perform a DNS backup and restore
DNS outages cause connectivity issues that prevent basic tasks from executing properly. Understand how to perform a restore for a DNS zone, which is not always intuitive. Continue Reading
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Tip
02 Aug 2022
Troubleshoot name resolution on Windows, Linux and macOS
Network administrators can troubleshoot name resolution using a variety of methods, including ping, nslookup and PowerShell cmdlets. Here are some troubleshooting best practices. Continue Reading
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Feature
28 Jul 2022
How vendors support sustainable networking initiatives
Organizations are focusing on sustainability in all business divisions, including network operations. These tools could help organizations make their enterprise networks green. Continue Reading
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News
12 Jul 2022
Counterfeit scheme trafficked in $1 billion in Cisco gear
A Florida man has been charged with running a counterfeit operation that duped hospitals, schools, government agencies and the military. Continue Reading
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News
11 Jul 2022
Chinese vendor H3C introduces first Wi-Fi 7 router
The H3C Magic BE18000, powered by a Qualcomm chipset, offers several significant Wi-Fi 7 features, including multilink operation and 320 MHz of channel bandwidth. Continue Reading
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Tip
08 Jul 2022
BGP vs. EIGRP: What's the difference?
BGP is an exterior gateway protocol optimized for routing between large networks. EIGRP is an interior gateway protocol that is well suited for routing within smaller networks. Continue Reading
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Tip
06 Jul 2022
A guide to distributed network architectures
Distributed network architectures have become popular because of their adaptability, reliability and scalability. But every new technology also has its challenges. Continue Reading
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News
06 Jul 2022
Evernote, Home Depot outsource network management
Offloading daily network management to networking vendors allowed Home Depot and Evernote to direct in-house IT staff to business-critical projects. Continue Reading
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Tip
05 Jul 2022
The role of name resolution in networking
Name resolution is essential in converting hostnames and IP addresses for network communications. Here's how the process resolves hostnames, queries servers and finds IP addresses. Continue Reading
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Tip
28 Jun 2022
How to convert binary to decimal
It's helpful for network admins to know how to convert binary to decimal, and vice versa, for IPv4 addressing, subnet masks, default gateways and network IDs. Continue Reading
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Opinion
27 Jun 2022
5 factors that form the future of Wi-Fi
For businesses, mounting ownership costs, unrealistic performance expectations, client device chaos and competing technologies all play a role in the future of Wi-Fi. Continue Reading
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Tip
03 Jun 2022
5 network virtualization challenges and how to solve them
The challenges of network virtualization include an overhaul of network architecture, thorough staff training and breaking down knowledge silos among IT departments. Continue Reading
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Tip
01 Jun 2022
How zero trust unifies network virtualization
The combination of zero trust and network virtualization creates opportunities to strengthen security policies, increase cross-domain collaboration and improve overall visibility. Continue Reading
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Tip
31 May 2022
What software-defined LAN means for campus virtualization
LAN virtualization has long encompassed VLANs to segment network traffic. But software-defined LAN is emerging with zero-trust strategies to provide more comprehensive security. Continue Reading
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Tip
24 May 2022
How enterprise networks use WAN virtualization
SD-WAN is the most common form of WAN virtualization. But virtual WAN strategies are evolving to include software-defined perimeter and cloud concepts. Continue Reading
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Answer
20 May 2022
Ethernet vs. Carrier Ethernet: How do they differ?
Connectivity over longer distances and higher data rates are some of the major differences that separate Carrier Ethernet from traditional wired Ethernet. Continue Reading
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Tip
12 May 2022
The role of network virtualization and SDN in data centers
SDN, zero trust and infrastructure as code are popular forms of network virtualization within the data center, moving away from manual VLANs toward policy-driven virtualization. Continue Reading
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Tip
11 May 2022
Carrier network virtualization leads to enterprise services
Starting with MPLS VPNs and SD-WAN, new carrier network virtualization options, like 5G network slicing, are becoming virtual enterprise network services, and more will follow. Continue Reading
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News
09 May 2022
Cisco warns of hardware failure in DIMM memory components
A manufacturing defect affecting some DIMMs made in late 2020 could cause persistent memory errors and server failure. Cisco recommends customers replace impacted DIMMs. Continue Reading
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Tip
09 May 2022
How network virtualization works
Network virtualization uses abstraction to isolate applications and resources from the physical infrastructure. Benefits include faster provisioning, agility and operational efficiency. Continue Reading
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Tip
05 May 2022
6 types of network topologies
Network topology is essential to network configuration, as it determines the arrangement of a network and defines how nodes connect. Here are six common types of network topologies. Continue Reading