Network Engineering

JANUARY 22, 2025

But how do you connect leaf switches that are beyond the number of ports spine switch has? What if there are more leaf than the ports in spine switch? Use of BGP for Routing in Large-Scale Data Centers Is this the same architecture the hyperscaler cloud provides use? I am not able to understand this.

Port 52

Port Data Centers Network Networking 52

The Network DNA

JULY 16, 2024

A switch forwards the broadcast out all the ports in same VLAN (except the port where broadcast was received). CCNA RnS #17: Switching Process CCNA RnS #16: Campus vs Data Center Network CCNA RnS #15: Memory Types - The Network DNA CCNA RnS #14 - CLI Introduction! - CCNA RnS Article #18: Secure Switch Management Plane!

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Protocol Ethernet IP Address LAN 98

Kentik

JUNE 27, 2023

Kentik customers move workloads to (and from) multiple clouds, integrate existing hybrid applications with new cloud services, migrate to Virtual WAN to secure private network traffic, and make on-premises data and applications redundant to multiple clouds – or cloud data and applications redundant to the data center.

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Cloud Firewall Topology Data Centers 105

Juniper

DECEMBER 19, 2024

Our campus and branch , data center , WAN routing , and security products have all proven time and again their ability to boost IT productivity and assure exceptional user and operator experiences for leading hospitals, hotels, schools, stores, campuses, factories and service providers.

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Network Networking Wide Area Network Data Centers 83

The Network DNA

JUNE 24, 2024

This table is populated automatically when a switch receives a frame on a port. As a frame is received on a port, its source MAC address is noted. The switch receives the frame from PC-1 that contains the MAC address 80::01 on port 1. Port 1 is configured as a member of VLAN-11. Then PC-1 wants to communicate with PC-2.

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Ethernet Port LAN Protocol 52

CloudFaire

JANUARY 2, 2025

Both options direct to an IP address advertised from every Cloudflare data center around the world, minimizing the latency for broadcasters (both big and small) to our ingest points. Those broadcasters assume their connection can be fully identified by connecting to a specific port, which was a challenge for our multitenant service.

Protocol 80

Protocol Media Port IP Address 80

Kentik

NOVEMBER 7, 2021

were all hosted in the corporate data center. The NetOps team can’t Telnet to routers and look at routing tables, and they can’t change routes or span a port to collect packets. And if the problem isn’t in your home, it’s somewhere between your home and a server located in a data center — who knows where?

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Routers Internet Application Server 104

Kentik

JANUARY 29, 2020

These technologies export data which describes conversations occurring across the specific network device. This includes port, IP source, destination, port numbers, and other markings such as quality of service (QoS).

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Port Network Networking Data Centers 16

The Network DNA

JUNE 17, 2024

Now actual data transfer happens. Lets say HTTP uses port 80 to identify the application at PC-2, PC-1 chooses Port 80 as the destination port and selects a random port 36000 as the source port. PC-1 and PC-2 both have received and acknowledged a sequence of packets from one another. Continue Reading.

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TCP Ethernet Port LAN 52

Kentik

JANUARY 29, 2020

These technologies export data which describes conversations occurring across the specific network device. This includes port, IP source, destination, port numbers, and other markings such as quality of service (QoS).

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Port Network Networking Data Centers 78

CATO Networks

AUGUST 18, 2022

Additionally, policy rules can be further refined based on application context including application (custom applications too), application categories, service, port range, domain name, and more. Catos WAN Firewall provides granular control of traffic between all connected edges (Site, Data Center, Cloud Data Center, and SDP User).

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SASE Cloud Port Firewall 52

NW Kings

JANUARY 4, 2025

At Network Kings, you will learn networking concepts (routing, switching, IP addressing) and basic network security fundamentalssuch as how to block websites and manage port numbers. This knowledge will enable you to manage secure connections between branch offices and data centers effectively; however, many overlook this crucial aspect.

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Engineering Network Networking Data Centers 52

Juniper

JANUARY 23, 2025

Nossos produtos de campus e filial , data center , roteamento WAN e segurana demonstram repetidamente a sua capacidade de impulsionar a produtividade da TI e garantir experincias excepcionais para usurios e operadoras nos maiores hospitais, hotis, escolas, lojas, campus, fbricas e provedores de servios.

Network 52

Network Networking Data Centers WAN 52

How Funky

MAY 4, 2020

The tools and constructs (Software Defined Data Center or SDDC) that VMware customers are used to stay the same, so they can just leverage running them in AWS. You will still have data gravity problems, they just won't look the same as they do for public cloud services.

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Cloud Data Centers Port Application 52

Kentik

AUGUST 10, 2021

They will tell you it refers to the ability to collect, aggregate and analyze metrics, logs and traces to understand the health and performance of applications that are distributed across multiple clouds and data centers. When I have a network with 4,000 ports going down, I don’t care about them unless there is traffic running on them.

Network 85

Network Networking Cloud DevOps 85

Kentik

APRIL 18, 2023

For example, consider an alert for link utilization reaching 100% on a pair of active/standby data center WAN ports. With a quick call to the data center team, an L1 SOC engineer would learn that the team just kicked off a replication task across the WAN but didn’t notify anyone.

Data Centers 59

Data Centers WAN Server Engineering 59

NW Kings

DECEMBER 16, 2024

This reliability is crucial for applications that cannot tolerate data loss, such as online banking or medical records systems. It uses port numbers to differentiate between various applications running on a host, enabling effective multiplexing. Source Port : The port number identifies the application sending the data.

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Protocol TCP Port Network 40

Juniper

JANUARY 7, 2025

L’innovazione incessante di Juniper nell’AI e nell’ automazione ha portato le nostre soluzioni wireless, WAN e Data center a un livello unico che supera la concorrenza ed apprezzato dai nostri clienti. Lo capiamo e condividiamo il tuo punto di vista. E tutto quasi a costo zero per te.

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Wireless Internet Network Networking 52

Kentik

MARCH 19, 2020

This configuration is known as a “split-tunnel” configuration and is set up by rules to exclude specific ports, protocols, or networks. This data is useful for Kentik’s automated capacity planning workflows and building topological maps (layer 2 and layer 3 connectivity). More advanced VPNs can do this by application type.

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VPN Network Networking Gateway 69

CATO Networks

JULY 25, 2023

In legacy architectures, most users were in the office,using on-premises applications, remote user traffic was backhauled through the data center, where security policies were enforced through point solutions. Cato provides full visibility and control over all the incoming and outgoing traffic from cloud data centers.

SASE 52

SASE WAN Data Centers Cloud 52

Kentik

MARCH 13, 2018

To start, we’ll look at a relatively simple example showing traffic measured in bits per second (bps), broken down by source IPs, destination IPs and services (protocol / port). Troubleshooting data center congestion. A Sankey diagram can provide instant visibility when troubleshooting data center congestion issues.

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Data Centers Port Energy Network 40

CATO Networks

SEPTEMBER 11, 2023

Organizations can face challenges moving all their security to the Cloud, particularly when dealing with internal traffic segmentation (East-West traffic protection), legacy data center applications that cant be moved to the cloud, and regulatory issues (especially in Finance and Government sectors). allow IOT devices (e.g.

LAN 52

LAN Cloud Firewall WAN 52

Kentik

JANUARY 13, 2021

That’s also true for flow data, which summarized packets. Both packets and flows provide information about the source and destination IPs, ports, and protocols. When getting flow data, you’re not as in the weeds as during a packet capture, but it’s good enough for most operational troubleshooting.

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Network Networking TCP Protocol 114

Scott's Weblog

JANUARY 10, 2025

I’m excited for the opportunity to continue to bring readers articles and links of interest across data center- and cloud-related technologies (along with some original content along the way). Welcome to Technology Short Take #185, the first of 2025! I might have to give this a try soon.

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Media Email Port Education 49

Kentik

DECEMBER 15, 2020

In order to see and reason about the network, it’s critical to gather telemetry: From all networks (cloud, data center, WAN, SD-WAN, internet, mobile, branch, and edge). I’ll talk more about each of these areas this month in subsequent blog posts. Telemetry Requirements to Support Network Observability.

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Network Networking DevOps Application 94

Kentik

SEPTEMBER 26, 2016

To quote: “Today’s typical NPMD vendors have their solutions geared toward traditional data center and branch office architecture, with the centralized hosting of applications.”. But you can’t do any of it without the instrumentation of cloud-friendly monitoring and the scalability of big data.

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Network Networking Data Centers Server 40

Kentik

APRIL 3, 2023

This is common in service provider networks and for data center core devices. Kappa: Kentik’s process-aware telemetry agent Kappa is Kentik’s host-based telemetry agent, designed to address visibility gaps in east/west flows across production data centers.

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TCP Application Virtual machine Network 110

How Funky

JULY 16, 2024

In a shared fabric environment, it can be difficult to structure and provision all the access ports with the right queuing and policies. But Intel still wants infrastructure engineers to know what their products are capable of, so when you are building out the next server, you are picking the right SmartNIC for your specific needs.

Ethernet 52

Ethernet Server Network Interface Engineering 52

Kentik

OCTOBER 23, 2018

If you are an enterprise customer who buys Internet/MPLS circuits, with “My Kentik”, you can now view your WAN traffic utilization and understand which departments, WAN sites, and data centers are driving network utilization. You can also use this data to make a more cost-optimized plan for network changes and expansion.

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Network Networking Data Centers IaaS 45

CATO Networks

AUGUST 23, 2022

Once connected, the Cato SSE 360 pillar of Cato SASE Cloud enforces granular corporate access policies on all applications — on-premises and in the cloud and across all ports and protocols, protecting users against threats, and preventing sensitive data loss.

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SASE WAN Cloud Network 52

Kentik

JUNE 28, 2023

We do this by using deeply enriched network data from across your entire data center, cloud, and container footprint to prevent, detect, and respond to cyber threats. Kentik customers can even do enrichment based on their own data sources so that they have the most relevant context.

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Port Airlines Network Networking 52

Kentik

NOVEMBER 7, 2018

You may still use monitoring appliances in your private/on-prem data centers, but how will you see the other side of the world (your footprints in public clouds)? Here are three key challenges frequently mentioned: Challenge #1 - Traditional appliance-based monitoring tools don’t work. from workloads to Google services.

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Cloud Network Interface Network Networking 53

Engineering at Meta

MAY 22, 2024

Since the execution engine is the layer where most computational resources are spent, often we have found ourselves re-implementing execution optimizations already available in a different system, or porting features across engines.

Engineering 104

Engineering Port Data Centers Protocol 104

Kentik

DECEMBER 8, 2016

In networking terms, a “flow” defines a uni-directional set of packets sharing common attributes such as source and destination IP, source and destination ports, IP protocol, and type of service. Flow Data Variations. Source & dest port. Not Just for NetFlow, Kentik Detect’s Analytics Cover All Major Flow Protocols.

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Protocol Port Routers Network 40

Engineering at Meta

DECEMBER 10, 2024

If we transferred them too late, even more work would be required on the new, unified infrastructure to port old features. If we transferred the engineers too early, approximately 50 product engineers would not be able to hit their goals, while also causing churn in the core infrastructure.

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Server Engineering Data Centers Network 74

Kentik

MARCH 27, 2023

link] A cable landing station, or CLS, is chosen because the location typically has less marine traffic than much busier port cities. A CLS could be a small, nondescript building in a small coastal town or part of a much larger data center. Clearly, global data usage is expected only to increase over the next few years.

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Internet Telecommunications Airlines Government 105

CATO Networks

MAY 20, 2020

Castle and moat alone doesnt cut it anymore In the early 2000s, most mission critical data within a WAN flowed between corporate data centers and offices. NGFWs can drill down beyond IP addresses, TCP/UDP ports, and network protocols to enforce policies based on packet content. But what does that look like in practice?

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Network Security Network Networking UDP port 52