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Archived Networking Articles
29 Apr 2014
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Solaris 11.2 Networking Overview: Application-Driven SDN and Beyond [36170]
Blog by Nicolas Droux

Nicolas writes, "we are excited to announce Solaris 11.2 (Solaris 11.2 Beta available here). This release introduces significant improvements to the Solaris networking stack, substantially expanding its built-in network virtualization and SLA features to provide a distributed virtual network infrastructure for your private cloud, and enabling application-driven SLAs. Together, these features are the foundation of the built-in Application-driven Software-Defined Networking (SDN) capabilities of Solaris 11.2.

As the Chief Architect for Solaris Core Networking, I am pleased to introduce this significant set of exciting new features and their benefits..."
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31 Mar 2014
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About link aggregation, water and buckets [35631]
By Joerg Moellenkamp

Despite popular belief ethernet networks aren't lossless, on the long way between the TCP/IP stack from one side to the TCP/IP-stack of the other side there is a lot that can happen to the data. Datacenter Bridging is a mechanism to put some kind of losslessness on the network needed for shoehorning storage protocols on it (FCoE). That said most of the time ethernet networks appear as lossless, even to that extent that protocols are used for important traffic that were used once for traffic considered as "nah, not that critical, when the packet doesn't arrive" ... UDP for example...
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13 Feb 2014
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Oracle Solaris 11 Integrated Load Balancer [34878]
By Isaac Rozenfeld

Isaac writes, "The Oracle Solaris 11 Networking technologies portfolio provides an in-kernel L3/L4 load balancer, with support for multiple load-balancing algorithms. It has built-in health-check capabilities and is configured and managed using the ilbadm(1M) command. We also provide support for Virtual Router Redundancy Protocol (VRRP), which offers high-availability of routers through redundancy and fail-over -- which can be used with the Integrated Load Balancer (ILB) to provide additional redundancy for it. VRRP is configurable with the vrrpadm(1M) command..."
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13 Jan 2014
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Life Sciences Platform on the NetBeans Platform [34477]
GenBeans is a tool for DNA sequence analysis

Geertjan writes, "GenBeans is a tool for DNA sequence analysis created in San Diego, California, for molecular biologists. Research scientists working with DNA molecules face the dilemma of manipulating DNA sequences, often represented as simple text strings, and integrating vast amounts of sequence-dependent features at the same time. For genome-wide analysis, both are rather unchangeable static entities that can be easily represented together.

On the other hand, sequence editing is complicated by an ever-changing set of features, some wanted, some desirable, some not. Design errors may translate in months of work. A fascinating aspect, from that point of view, of NetBeans IDE is its language support with its automatic annotation as you type and rich set of meta-information because DNA sequence is comparable to a language where features and motifs are the words, it is interesting to approach DNA sequence editing & analysis in the same way NetBeans IDE handles programming languages..."
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30 Dec 2013
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How to Control the Zone's Network Bandwidth on Solaris 11 [34210]
Blog by Lingeswaran R

Lingeswaran blogs, "Oracle has made a lot of changes in Solaris 11's network architecture compare to Solaris 10. Solaris 11's network virtualization and network resource control to the OS is absolutely brilliant. The biggest problem with Oracle Solaris 10 is that we have forced to use shared IP type for local zones , since exclusive IP type required a dedicated NIC's for each zone. In shared IP model, you can't be able to separate the network traffic of local zones.For an example if there is an issue with one local zone ,then you have to run snoop command from global zone to capture the network traffic. But in Solaris 11, you can able to run snoop command from local zone itself.

So you no need to capture the unnecessary traffic of global and other local zones..."
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21 Dec 2013
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Measuring Network Bandwidth Using iperf [34103]
Quick check of performance of a network; compare the achieved bandwidth with expectation

Giri Mandalika writes that, "iperf is a simple, open source tool to measure the network bandwidth. It can test TCP or UDP throughput. Tools like iperf are useful to check the performance of a network real quick, by comparing the achieved bandwidth with the expectation. The example in this blog post is from a Solaris system, but the instructions and testing methodology are applicable on all supported platforms including Linux.

Download the source code from iperf's home page, and build the iperf binary. Those running Solaris 10 or later, can download the pre-built binary (file size: 245K) from this location to give it a quick try (right click and "Save Link As .." or similar option)..."
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