What else can we ask if we don’t ask about these protocols? Should we ask about OSPF or BGP? Those are protocols used by network engineers. Should we ask about Kerberos or CIFS/SMB? Those are protocols used by Windows system administrators. Should we ask about Access Tokens, SSO, CSRF, or SQL Injection? Those are concepts … Read more
20th Article:Multi-VRF CE / VRF-Lite In the previous section, we learned about more PE-CE routing protocols. In this section, we will start learning about Multi-VRF CE / VRF-Lite. Let’s dive in. Multi-VRF CE / VRF-Lite Overview When the interface connecting the CE is placed in the VRF table on the PE, all CE data coming … Read more
First, for those who want to systematically learn about Python network automation and operations, I recommend the columns by @YiXin and @ZhuJiaSheng. Recently, “Xian Lai Wu Shi” reviewed the cross-domain solution of MPLS, simulating the Option A scheme. During the simulation, it was found that the ASBRs using OSPF protocol could not learn routes due … Read more
SDNCan SDN network architecture replace TCP/IP architecture?1. SDN and NFV differ from traditional routing table selection rules, as they choose forwarding paths through OpenFlow flow tables. Does this mean that routing protocols like OSPF and EIGRP are no longer needed? Can we say that it has replaced the network layer?2. Overlay provides layer 2 flat … Read more
No matter how one’s mindset changes, technology remains the most powerful weapon in the hands of network engineers! Today’s technical points are explained from small details, which can help beginners solve basic literacy issues and allow experienced network engineers to “review and learn anew”. Let’s take a look together~ 01 LAN (Local Area Network) Typically … Read more
GPIO (General Purpose Input/Output) is a pin on a microcontroller or microprocessor that can be programmed as an input or output for communication with external devices. In Linux systems, developers can easily read and set the state of GPIO through user space interfaces provided by the kernel, enabling control and monitoring of external devices. This … Read more