sdn ot

"Summary"Iperf is a network performance testing tool, it can be easily used for SDN network bandwidth and network quality testing,Iperf Support protocol, timing, Configuration adjustment of buffers and other parameters, reporting tcp/udp Maximum bandwidth, delay jitter, packet loss and other statistics. 1 Iperf Installation Iperf Installation method has a variety, you can download the source code compiled installation, you can also directly use the c

this port number is in which IP, which port, which container is executed. As the user does not need to modify any code (such as compatible with what ZOOKEEPER/ETCD God horse), do not care. Even this port is followed by multiple remote IPs that make up a client-based high availability. The agent can even do something wrong to change a backend and try again.With this artifact, the capacity to expand, release changes, failure to replace is easy. Containers are freely added and deleted. Once the ne

software. However, data storage has already broken through the restrictions of specific content, access to data resources other than the file system." SAP can improve the performance of its trex search system through the search engine technology included in NetWeaver, and thus create search indexes for organized and unorganized data. Microsoft recently released a new search tool to manage users' searches based on company data in multiple locations. The tool's code name is "oneview". Microsoft's

questions about software-defined storage are dispelled.Overview In the current data center, the I/O path from the application to the storage device is particularly long, including many layers or stages. For details, click here, in addition, the interfaces between these layers are still not transparent (like tunnel), which makes enforce an end-to-end policy (for example, for different tenant, different storage bandwidth is required, for example, hot data and cold data, such as customers of diffe

In a production environment, we will encounter disks with partitions larger than 2T (e.g. add a 3TB storage), because the MBR partition table only supports 2T disks, so a disk larger than 2T must use the GPT partition tableWhile Fdisk does not support GPT partitioning, we can use parted to operate on GPT disks. Parted function is very powerful, both command line can also be used for interactive, at the prompt input parted will enter the interactive mode, if there are more than one disk, we need

# Include # Include # Include Using namespace STD;Template Class Node{Public:T data;Node Node (t d = T (), node {}};Template Class cirhs1_list{Public:Node Cirhs1_list ();~ Cirhs1_list (){Clear ();}Cirhs1_list (T const value [], int N );Bool isempty () const;Void clear ();Cirhs1_list Cirhs1_list (cirhs1_list Template Friend ostream operator };Template Cirhs1_list {Node For (INT I = 0; I {Temp-> next = new node Temp = temp-> next;}}Template Cirhs1_list {}Template Bool cirhs1_list {Return 0 = head

voltage sensor is shown in table 1.table 1 on-chip sensor results corresponding relationship Sensor Ad conversion Result Conversion Note Temperature sensor T = (ADC Code * 503.975)/4096–273.15 Voltage Sensors V = (ADC code/4096) 2.4.2 Auto Power off protectionThe XADC has an automatic shutdown protection function, which must be used to:① register enable: the low four bits of the

A shallow copy of the method is:lst=[1,2,3](1) Direct assignment: LST_CP = LST(2) For loop traversal generation: lst_cp= [i-I in LST](3) The copy.copy is still a shallow copy under the Copy module.Deep copy of the way(1) with the Copy module>>> Import Copy>>> LST_CP = copy.deepcopy (LST)Test of the above method:Note: Because the string type is immutable, a new address space placement data is created when the string element is modified(1) Direct assignment(2) For loop>>> lst=[1,2,3]>>> lst_cp=[i

]*/public class Objecttest {Public synchronized void MethodA () {try {System.out.println ("This is MethodA ..." + thread.currentthread (). GetName () + ":" + New Date ());Thread.Sleep (1000);} catch (Interruptedexception e) {E.printstacktrace ();}}public void MethodB () {System.out.println ("This is MethodB ..." + thread.currentthread (). GetName () + ":" + New Date ());}Public synchronized void Methodc () {try {System.out.println ("This is methodc ..." + thread.currentthread (). GetName () + ":

, the following line is the output, that is, we can observe the value, now, we have the above line of Markov transfer in the process of the state is called a hidden state, the following observed value is called the observation state, the set of observed state is represented as O={o1,o2 , O3,... OM}. Accordingly, Hidden Markov also has a more than Markov assumption that the output is only relevant to the current state, and can be expressed in the following formula: P (O1,o2,...,

//Get position pt.getpos = function (obj, isnonstatic) { var left = 0, top = 0; nb Sp;while (obj) { left + = Obj.offsetleft; top + = obj.offsettop; NBSP;N Bsp;obj = obj.offsetparent; if (isnonstatic this.isnonstaticpos (obj)) { break; NBSP;NBSP;NBSP} } return {left:left, top:top}; } //mouse positioning pt.fallowmouse = function (e, obj, dir) { e = e | | window.event; NBSP;N Bsp;if (obj) | | |!e) {//non-static positioned left top positioning is not valid, or is not an event object

Tags: in oracle-day02Second, connection query(a) Multi-table connection query(1) Requirements: The query shows the owner number, owner name, owner type name, such as:Query statement: select o.id 业主编号,o.name 业主名称,ot.name 业主类型 from T_OWNERS o,T_OWNERTYPE ot where o.ownertypeid=ot.id (2) Requirements: The query shows the owner number, owner name, address and owner type, such as Analysis: This query requires a three-table association query. The owners tab

between the goals that OpenFlow hopes to achieve and the existing and planned ASIC goals. Now ONF is working on the establishment of the chip advisory board. McKeown said: "We will learn from them the possibility of chip technology, from there, we can extend the possibility of the next generation of OpenFlow." OpenFlow has begun to use content-addressable memory (content-addressable memories) as an intermediate medium for routers and switches ASIC. However, the functions of this method are limi

parse data packets layer by layer at the protocol stack level. The so-called router is a layer-3 device, and the switch is a layer-2 device, firewalls are classified into two-layer firewalls and three-layer firewalls... the PF_RING device can directly DMA data packets from the NIC chip to the memory on your machine. That's all. Then, you can process data packets through an application instead of the kernel protocol stack, as for how your application processes data packets, I will list the follo

computing, network and storage restrictions, significantly increasing QoS and user experience.Objective of SDS The goal of SDS is the same as that of the software-defined network. SDN goals can be divided into two dimensions: horizontal optimization capability; vertical Optimization, is software integration that controls the plane and data plane. From the perspective of high-level applications (compared with low-level LUN and RAID), Application Deplo

Figure 1: Low latency software defined networking control loop The articles SDN and delay and delay and stability describe the critical importance of low measurement delay in CONSTRUCTI Ng stable and effective controls. This article would examine the difference in measurement latency between SFlow and Netflow/ipfix and their relative Suitabi Lity for driving control decisions. Figure 2: sFlow and NetFlow agent architectures Figure 2 illustrates shows

One, openflow to solve what problem?1. First, a brief introduction to what is SDN, the traditional network is the computing route of each node itself, SDN is centralized control of the route. In a data center network, there is only one controller, the following can be connected to multiple switches. After the controller has calculated the route, the flow table is sent to the switch, and the switch is forwar

cloud providers cannot support the router hardware installed by users. In addition, there are potential sequential failover and overflow problems, because load balancing is not a normal property of VPN. The good news is that there are emerging solutions on the market that can help optimize the efficiency of VPN in the cloud environment. Use SDN to connect to cloud Resources An emerging method for connecting to cloud resources is to use software defin

environment and software release notes === Sn-controller: Cpu:2 cores Ram:4gb Disk:32gb Operating system:centos7 x86_64 1611 (Linux 3.10.0-514) Infrastructure Server IP1:10.0.3.100/24 (Public Network) IP2:172.16.3.100/24 (SDN Network) === Opendaylight:boron Download Address Reference Virtual Tenant Network (VTN) "Opendaylight Application Guide" (Hong Tang, etc.) functional Experience Opendaylight's VTN is an application on the

of intersection and intersection of surface element and plane is as follows:BOOL Isfaceinersected (trimesh* mesh,GLM::IVEC3 F,GLM::VEC3 N,Float d) {int flags = ((GLM::d ot (mesh->v[f[0]], n) > D) + (GLM::d ot (mesh->v[f[1]], n) > D) + (GLM::d ot (mesh->v[f[2]], n) > D));return flags = =1 | | Flags = =2;}std::arrayGLM::VEC3,2> getfaceintersection (trimesh* mesh,G