Programming VIP

I believe you must have read my last article (in short, only IO APIC can accept interrupts from PCI). Yes, as long as you write the interrupt driver this time, you can officially start the development of PCI! The performance of APIC is worse than that of 8259A interrupt processor. Without comparing the actual performance, let's talk about the ...

bridge is a virtual switch on linux, which has the function of switch. After the network card receives the packet, go to__ netif_ receive_ skb_ After the core, peel off the vlan and find the vlan sub interface (if any). If SKB - > dev is a bridge member port, it will go to the receiving and processing function of the bridge member port. st ...

ovs, whose full name is openvswitch, is a high-quality, multi-layer virtual switch with some advantages over bridge: 1) Facilitate network management and monitoring. The introduction of OVS can facilitate administrators to monitor the network status and data traffic in the whole cloud environment. For example, they can analyze which VM, OS and ...

Republish, redistribute and redistribute: When there are two routing protocols or different processes of the same in a network; Protocols, processes, databases and information are independent and not shared; Redistributing technology can share routing entries between two protocols or two processes to achieve the accessibility of the whole netw ...

requirement 1. Planning topology 2. Reasonably configure IP address 3. Plan VLAN information as shown in the figure. PC1/PC2/PC3 belongs to VLAN123 and AR1 belongs to VLAN111 4. MSTP, eth-trunk and VRRP need to be configured reasonably to achieve the best network availability 5. Configure the dynamic routing protocol to make the whole network ...

Project introduction Project github: github link This project is based on C + + language, Mr. Chen Shuo's muduo network library, mysql database and json CPP. The server listens to two ports, one for processing http requests and the other for processing json data sent. This project cooperates with a qt+opencv license plate recognition front ...

I usually read blogs or learn knowledge. What I learned is scattered. There is no independent concept of knowledge module, and it is easy to forget after learning. So I set up my own Note warehouse (a note warehouse I maintain for a long time. If I'm interested, I can click a star ~ your star is a great driving force for my writing). Class ...

Problem description The dmesg information of a certain system has the following contents printed frequently, which flushes out other relevant information and needs to be limited. UDP: bad checksum. From 10.66.245.93:61525 to 255.255.255.255:137 ulen 58 Related code File name in kernel source tree: net/ipv4/udp.c Relevant source code: ...

DIP: the IP address of the scheduler RIP: the IP address of the real server in the background VIP: virtual IP used for service provision Compared with NAT mode, DR mode of LVS is more complex and difficult to implement, because it is closer to hardware based load balancing. Although the performance is still lower than that of hardware based ...

    1. Alios things Wi Fi Networking Background Accessing Wi Fi network is the first step of networking most IoT devices. Access to Wi Fi generally requires two stages: distribution and networking. 1.1 introduction to Netmgr The Netmgr module introduced in this paper abstracts the distribution network and networking capabilities driven ...