On the ‘Net: The Internet Protocol Journal
The latest IPJ has been published—the first in a while. Ole is just putting the publication back on a sound footing; hopefully we’ll start seeing new editions of this excellent resource on a regular basis. Two good articles this month—
Comprehensive Internet E-Mail Security
William Stallings
At its most fundamental level, the Internet mail architecture consists of a user world in the form of Message User Agents (MUA), and the transfer world, in the form of the Message Handling Service (MHS), which is composed of Message Transfer Agents (MTA). The MHS accepts a message from one user and delivers it to one or more other users, creating a virtual MUA-to-MUA exchange environment. This architecture involves three types of interoperability.
Cloudy-Eyed: Complexity and Reality with Software-Defined Networks
Russ White and Shawn Zandi
Software-Defined Networks (SDN) are promoted as a way to eliminate the complexity of distributed control planes, increase network responsiveness to specific applications and business requirements, and reduce operational and equipment cost. If this description sounds like the classic “too good to be true” situation, that’s because it might just be.
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On the ‘Net: The Shifting Job of the Network Engineer
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Nokia Puts Machine Learning Into Its Software Business
Self-learning computers could help reduce truck rolls.
Worth Reading: Beware of Linking Ads
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Get to Know the Docker Datacenter Networking Updates
The latest release of Docker Datacenter (DDC) on Docker Engine 1.12 brings many new networking features that were designed with service discovery and high availability in mind. As organizations continue their journey towards modernizing legacy apps and microservices architectures, these new features were created to address modern day infrastructure demands. DDC builds on and extends the built-in orchestration capabilities including declarative services, scheduling, networking and security features of Engine 1.12. In addition to these new features, we published a new Reference Architecture to help guide you in designing and implementing this for your unique application requirements.
Among the new features in DDC are:
- DNS for service discovery
- Automatic internal service load balancing
- Cluster-wide transport-layer (L4) load balancing
- Cluster-wide application-layer (L7) load balancing using the new HTTP Routing Mesh (HRM) experimental feature
When creating a microservice architecture where services are often decoupled and communicated using APIs, there is an intrinsic need for many of these services to know how to communicate with each other. If a new service is created, how will it know where to find the other services it needs to communicate with? As a service needs to be scaled, what mechanism can be used for Continue reading
PQ Show 100: Engineers At The Bar Round 2
Todays Priority Queue is a candid conversation among engineers about the tech industry, recorded live in bar. They talk about the state of networking as a discipline, prospects for open networking and disaggregation, visibility, and more. The post PQ Show 100: Engineers At The Bar Round 2 appeared first on Packet Pushers.Inside NV Training Challenges
Industry growth is being hampered by a lack of IT professionals who have the skills required to deploy network virtualization (NV) and software-defined networking (SDN) in the enterprise.
Cumulus Linux Network Command Line Utility
Here at Cumulus Networks, we believe that network engineers are the real heart of an organization. They’re the ones managing switches, running the data center, and generally keeping an organization moving efficiently and securely.
We also believe web-scale networking and the associated benefits should be accessible to everyone and the best way to make that happen is to leverage the power of disaggregation and native Linux. Although web-scale networking is very flexible, agile and offers many benefits, there can be a learning curve as Linux uses separate, independently developed applications which each have their own syntax to configure the switch.
So how do we bridge these two beliefs? Allow us to introduce Cumulus Linux Network Command Line Utility (NCLU). Scheduled for our early December 3.2 release, NCLU empowers and quickens the learning curve so all network engineers can benefit from web-scale networking while integrating with and still supporting the traditional Linux methods. In short, NCLU makes Cumulus Linux easily accessible to everyone.
What is Cumulus Linux Network Command Line Utility?
NCLU is a command line utility for Cumulus Linux that rides in the Linux user space as seen below. It provides consistent access to networking commands directly via bash, Continue reading
Q&A with Kelly Ahuja, the New CEO at Versa Networks
The former Cisco exec likes the security aspect of Versa's SD-WAN.
Q&A with Kelly Ahuja, the New CEO at Versa Networks (Part 2)
Return to Page 1 Hardware vendors like Cisco and Nokia are tweaking their existing hardware and software to do SD-WAN. What do you think of that approach? Ahuja: It’s a hot market and everyone’s going to do everything they can to go after it. There are customers who want those vendors to do something in... Read more →
Network Analysis: TCP Window Size
Tony Fortunato demonstrates how to track TCP window size to troubleshoot network performance issues.