Juniper Certifications now good for 3 years!
It is finally official, Juniper has extended their certification expiration from two years to three years. Originally Juniper certifications where active for 2 years, and then you had 1 year after that to renew. If you did not re-certify prior to the 2–year anniversary, you went into an inactive status for a year with your […]
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Get Digital Content with the SDN Workshop
Last week I ran two SDN workshops, and in both of them the participants were busy taking notes as I explained the intricacies of concepts like SDN, NFV and network automation, and tools like OpenFlow or BGP.
However, how often did you revisit notes taken at a presentation and kept wondering “what exactly was he trying to say?” … or felt like the training you attended was like drinking from a fire hose and you missed most of the good stuff?
You won’t have that problem during the Miami SDN/NFV/SDDC retreat.
Read more ...Containers Make Ciena’s Blue Planet More User-Friendly
Customers get the freedom to make programming changes to their network orchestration software.
CCNA – Operation of IP Data Networks 1.2
The next topic for CCNA is:
1.2 Select the components required to meet a given network specification
I wish the blueprint would have been a bit clearer on what they mean with this topic but it’s reasonable to think that it’s about picking routers and switches depending on the networking requirements.
Picking a router or switch will depend on what kind of circuit is bought from the ISP, if the service is managed, the number of users on the network, the number of subnets needed and if there are requirements for NAT and/or firewalling among many decision points. Since this is the CCNA RS we will pretend that devices such as the Cisco ASA does not exist which can be used for small offices to do both firewalling and routing.
I’ll give different examples and we’ll look at which devices make sense and why to pick one device over another.
MPLS VPN circuit 10 users One subnet (data) No need to NAT No need for firewall
The MPLS VPN circuit is a managed service, meaning that the ISP will have a Customer Premises Equipment (CPE) at the customer. In other words, the ISP will put a router at the Continue reading
Which NoSQL database is right for you?
This vendor-written tech primer has been edited by Network World to eliminate product promotion, but readers should note it will likely favor the submitter’s approach.
Many organizations are turning to NoSQL for its ability to support Big Data’s volume, variety and velocity, but how do you know which one to chose?
A NoSQL database can be a good fit for many projects, but to keep down development and maintenance costs you need to evaluate each project’s requirements to make sure specialized criteria are addressed. Keep in mind that it is not just a question of being able to develop the application specified, it also means being able to easily manage and support applications with the potential for dramatic growth in scope and size in production for many years. One of my customers doubled the size of their business 12 times in less than 4 years.
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My Thoughts on Dell, EMC, and Networking
The IT world is buzzing about the news that Dell is acquiring EMC for $67 billion. Storage analysts are talking about the demise of the 800-lb gorilla of storage. Virtualization people are trying to figure out what will happen to VMware and what exactly a tracking stock is. But very little is going on in the networking space. And I think that’s going to be a place where some interesting things are going to happen.
It’s Not The Network
The appeal of the Dell/EMC deal has very little to do with networking. EMC has never had any form of enterprise networking, even if they were rumored to have been looking at Juniper a few years ago. The real networking pieces come from VMware and NSX. NSX is a pure software networking implementation for overlay networking implemented in virtualized networks.
Dell’s networking team was practically nonexistent until the Force10 acquisition. Since then there has been a lot of work in building a product to support Dell’s data center networking aspirations. Good work has been done on the hardware front. The software on the switches has had some R&D done internally, but the biggest gains have been in partnerships. Dell works closely Continue reading
More concurrency: Improved locking in PostgreSQL
If you want to build a large scale website, scaling out the webserver is not enough. It is also necessary to cleverly manage the database side. a key to high scalability is locking.
In PostgreSQL we got a couple of new cool features to reduce locking and to speed up things due to improved concurrency.
General recommendations: Before attacking locking, however, it makes sense to check what is really going on on your PostgreSQL database server. To do so I recommend to take a look at pg_stat_statements and to carefully track down bottlenecks. Here is how it works:
Cybereason Locks Up a $59 Million Round
Cybersecurity firm partners with SoftBank for joint offering in Japan