TUN/TAP Interface
Concept
From the Linux kernel
documentation:
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VXLAN Hands on Lab
Using OVS VTEP Emulator
Overview
In previous post, we introduced the concept of VXLAN and
analyzed the traffic flow in a VXLAN network. It may help understand VXLAN by
looking at the real VXLAN traffic. So now it’s time to make our hands dirty!
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Start an Open Source Project
Personal Experience
Overview
There are many excellent articles on how to start an open source project. For
example: Starting an Open Source
Project gives many valuable
suggestions, which I won’t repeat. I will only share my personal opinions and
experiences based on the project I recently started on
Github.
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Linux Bridge - Part 2
Overview
In previous post, I described the
configuration of a linux bridge and showed an experiment in which wireshark was
used to analyze the traffic. In this article, I will discuss what happens
when a bridge is created and how a Linux bridge works.
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Linux Bridge - Part 1
Overview In previous post, I described the concept of VXLAN and said it is heavily used in SDN (Software Defined Network). Although SDN is a relatively new concept, the support for virtual networking is not - Linux bridge has made it possible long before. It could be helpful to learn...
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VXLAN
Virtual eXtensible Local Area Network
Overview In one sentence, VXLAN (RFC 7348) is a protocol for overlaying virtualized layer 2 networks over Layer 3 networks. In this post, I will first introduce some network basics for better understanding the concept of VXLAN. Then I will talk about what is VXLAN, why using VXLAN and the...
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AOP and AspectJ Part 2
AspectJ In Practice
In previous post, we discussed the concept of AOP
and explained the terminologies used in AspectJ. Now we can use some examples to
show how AspectJ can be used in a project.
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AOP and AspectJ Part 1
Concept and Terminology
Aspect Oriented Programming (AOP)
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Java Annotation
Basics As the name implies, annotation is used to provide additional information for the elements (classes, methods, etc) you want to annotate. It is similar to meta data which shows properties of an element. The most common annotation should be @Override, which indicates that you intend to override a method...
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Troubleshooting Java Application Issues
Basic Approaches
Check logs and see if any error messages/exceptions there.
Check system status - CPU, memory, disk, network, etc. See if any abnormal patterns exist.
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