load balancing router with wifi

result is also not conducive to the promotion of software. So how do you cross this bottleneck and increase the concurrency of MySQL? There are many methods, such as distributed database, read/write separation, high available load balancing, increasing cache server and so on. The previous article has introduced a read-write separation scheme, and next I will explain MySQL high-availability

) #interface loopback 1R1 (config-if) #ip address 172.16.1.1 255.255.255.0R1 (config) #interface loopback 2R1 (config-if) #ip address 172.16.2.1 255.255.255.0R1 (config) #interface Loopback 3R1 (config-if) #ip address 172.16.3.1 255.255.255.0R1 (config) #interface Loopback 4R1 (config-if) #ip address 172.16.4.1 255.255.255.0R1 (config) #interface e1/0R1 (config-if) #ip address 192.168.2.1 255.255.255.0R1 (config-if) #no shutdownR1 (config) #router rip

the router, send an ARP request, This ARP request includes its own IP address and MAC address, and Linux by default is using the IP Source IP address as the source IP address in the ARP, rather than using the sending device above, so in the LVS such a framework, all the sending packets are the same VIP address, Then the ARP request will include the VIP address and the device Mac, and the router receives th

the user's request, according to the previous set of scheduling algorithm results to determine the request load to a real server, if the result of the scheduling algorithm at this time, the request load to real server 1, at this time director The Server modifies the target MAC address in the data frame to the MAC address of real Server1, and then sends the data frame out, 4, when Real Server1 receives a p

Before we took two articles, we explained in detail the nginx principle, installation and feature components. See Load Balancing Layer Design (2)--nginx installation (http://blog.csdn.net/yinwenjie/article/details/46620711) and architecture design: Load Balancing layer Design (3)-- Nginx Advanced "(http://blog.csdn.net

LVS Overview1.lvs:linux Virtual ServerQuad Exchange (routing): forwards it to a server in the backend host cluster based on the destination IP and destination port of the request message (based on the scheduling algorithm);Not able to implement load balancing on the application tierLVS (also known as Ipvs) is based on the firewall NetFilter implementation in the kernel2.lvs Cluster Terminology:

/root/haproxy.sh (第一个调度器，192.168.1.10)crontab -e */1 * * * * /root/haproxy.sh (第一个调度器，192.168.1.10)Gateway Acting as a router role 1. Configure IPvim /etc/sysconfig/network-scrips/ifcfg-eth0DEVICE=eth0TYPE=EthernetONBOOT=yesNM_CONTROLLED=noBOOTPROTO=staticIPADDR=192.168.1.1NETMASK=255.255.255.0cp /etc/sysconfig/network-scrips/ifcfg-eth0 /etc/sysconfig/network-scrips/ifcfg-eth1vim /etc/sysconfig/network-scrips/ifcfg-eth1DEVICE=eth0TYPE

172.30.25.2/30; }} lo0 {Unit 1 {family ine t {address 10.0.0.1/32; }}} protocols {rip {Group rip1 {export Direct-to-rip; Enable RIP neighbor em1.13 on the neighbor em1.12;//interface; }}} policy-options {policy-statement Direct-to-rip { Term 1 {from Protocol [direct RIP];//direct only notify RIP neighbors of direct-attached routes to the local router, RIP can advertis

script to set up a firewall, you need to add the following rules Iptables-a output-o eth0-d 224.0.0.18-j accept iptables-a output-o eth0-s 224.0.0.18-j Accept Iptables-a input-i eth0-d 224.0.0.18-j Accept Iptables-a input-i eth0-s 224.0.0.18-j Accept 5. Summary Keepalived the dual-machine hot standby via virtual routing, which has some advantages over other schemes. Because it is a fixed master-slave hot standby, this scheme is more suitable for two interoperability s

650) this. width = 650; "style =" border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px "title =" image "border =" 0 "alt =" image "src =" http://www.bkjia.com/uploads/allimg/131227/031R16441-0.png "" 835 "height =" 219 "/> How does one achieve load balancing on multiple links? Two methods: 1. Build an EBGP neighbor using the loopback port and use EBGP multi-hop 2. EBGP multipath T

HSRPcisco and VRRP are the most common gateway redundancy technologies. Similar to VRRP, HSRP is composed of multiple routers. A vro is a virtual gateway, and a vro is active. It is replaced by a device to implement transparent switching to users. However, we hope to achieve redundancy at the same time. Load Balancing to make full use of the capabilities of the device, GLBP (cisco) provides both redundancy

Nginx's load balancing strategy can be divided into two categories: built-in policies and extension strategies. Built-in policies include weighted polling and IP hashes, which, by default, are compiled into the Nginx kernel, simply by specifying the parameters in the Nginx configuration. There are many extension strategies, such as fair, universal hash, consistent hash, etc., by default not compiled into th

Configure VRRP for Load BalancingApplication EnvironmentServer Load balancer creates multiple backup groups to share network traffic. A vro can belong to multiple backup groups. The operation is as follows:Vroa A acts as the Master of Backup group 1 and Backup of Backup group 2.Vrob B acts as the Master of Backup group 2 and Backup of Backup group 1.Some hosts in the network use backup group 1 as the gatewa

Link load balancing can actually do this. Enterprises generally lease multiple ISP links to avoid network availability risks caused by single ISP link failure and solve network access problems caused by insufficient network bandwidth. How to properly use multiple ISP links does not cause resource waste, but also improves the quality of network services. This article will focus on analyzing several methods

the horizontal expansion. * In hot spare time, the database server only one is working, the other is in the state of idle backup, resulting in a waste of investment. * Non-real-time switching. The emergence of database router software icx provides a better clustering solution for the database system based on MS SQL Server. It can really implement the SQL Server number According to the library server dynamic l