I recently had a chance to speak with a supervisor, who is called such by his colleagues, from Huawei. He mentioned that Huawei was trying doing outsourcing IT management service for SP customers. This approaching reminds me that Cisco is also thriving to bring management service into China. I don’t think this is a coincidence that two biggest companies in the same industry are doing the same. The only difference is that Huawei is expecting to have a proliferation out of China mainland, while Cisco is trying to bring this concept into China.
Why we need network simulation As a network engineer, I have to spend a lot of time in the lab or test environment on testing concepts, configuration, troubleshooting and so on. This is also true for people whose work environment is related to a network such as developers, DBAs. The problem here is that the lab sometimes so perfect that it cannot emulate the real world flaws like latency, packet loss, re-order or bandwidth limitation.
Ever since SDN has been revealed and considered as the future in the industry by the public. There are abundant discussions about OpenFlow, ACI, NSX, etc. The main focus right now is the software part including southern API, northern API and more. The discussion about those new features which SDN could bring us has instigated the aspires of this Old-thought-with-new-implementation for network fellows who have been suffered for a long time for the poor management & controllability of network entities.
什么是冒充者综合症(Impostor Syndrome) 冒充者综合症(Impostor Syndrome) 也被称为自我能力否定倾向，具有这种倾向的人往往在一些领域有所成就，但对
I’ve discussed what is IGMP snooping and its forwarding rules for different packets in my last post. I just want to give some typical scenarios in IGMP snooping for your better understanding. Scenario 1: Switch forwarding multicast traffic to a multicast router and hosts In the topology shown above, the switch acting as a pure L2 device interconnects multicast router, which directly connects to the Source A for multicast group 239.
Jason Cohen 在近期的文章中提出一些经常被误解为竞争优势的项目。我总结了一下，也加上了自己的看法： 我们有功能X。除非对手不能模仿，或者被模仿后，客户和
I had been planned to be a game/software developer since 10, but I’ve jumped into another industry — network — right after my graduation from college. After dedication of my most of time, I finally have passed three tracks of it – R&S, SP, Sec. Within these years, a lot of people in this industry or not have talked and discussion about CCIE with me. I’d like to share my personal ideas of CCIE about WHAT, WHY and HOW.
ABR is short for Adaptive Bitrate Streaming, which is a technique used in streaming multimedia over networks. While in the past most video streaming technologies utilized streaming protocols such RTP with RTSP, today’s adaptive streaming technologies are almost exclusively based on HTTP and designed to work efficiently over large distributed HTTP networks such as the Internet. It works by detecting a user’s bandwidth in real time and adjusting the quality