ObjectiveLearning Network knowledge of the students have heard or used the network device Simulator, network equipment simulator known to have Huawei's ENSP, Third HCl and Cisco PACKET TRACER, Cisco's simulator with a simple operation interface, Easy to install and use and a variety of easy to work can win a lot of network engineers and students praise. Because I am short-sighted, I will be the most basic level of operation, the shortcomings are also
Tags: tle simulates a trunk mode ace 51cto fast spanning tree quick typeLoops are present in the network, and all loops are formed due to confusion caused by ambiguous destination paths. The loop has a great impact on the network. Spanning Tree protocol is a good solution to this problem.The idea of spanning a tree protocol topology is that, regardless of the physical connection between switches, the switch can automatically discover a network with no loop topology, and the network of the logica
Summary: Below I have made the following technical summary for the spring cloud MicroServices Distributed Cloud Architecture: VIEW:H5, Vue.js Spring boot/spring Cloud:zuul, Ribbon, feign, Turbine, Hystrix, Oauthor2, Sleuth, API Gateway, Spring Cloud, Config Eureka, SSO, Spring Cloud, BUS, Turbine, Zipkin, Cache, Spring Cloud Admin, API Gateway, ELK Spring Cloud Security, Spring Cloud StreamHonghu Cloud is based on Springcloud, Spring cloud itself prov
Cisco CCNA Chapter 6 answers for the third semester, Cisco ccna for the third semester
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4. During the implementation of inter-VLAN routing, what are the important considerations when configuring the sub-interface of the router?
The physical interface must have an IP address.
The sub-int
, adding switches and end devices1, double-click switch into switch command line (CLI) mode, switch configuration mode by command2 in most cases for security reasons, you need to configure the switch privileged mode passwordValidation test3 Configuring the telnet login switchTo achieve remote login, first need to configure the login user and device management addressVerify the configuration by matching the IP address of the PC with the switch management address into the same network segment and
Technical standards for VLANs IEEE 802.1Q was formally promulgated by IEEE Commissioners in June 1999, and the earliest Vlna technology was proposed by Cisco (Cisco) companies in 1996. With the development of the past few years, VLAN technology has been widely used in large and small enterprise networks, becoming the most popular Ethernet LAN technology at present. This article is going to introduce one of
Tags: size src zone sha port text topology Cisc-oTwo networks in different regions if you want to communicate, you need to configure routing on the router to implement the packets across the networkRouters can connect to multiple networks, but the router itself does not know about other networks, and we need to manually configure static routes to let routers know about other network information or to configure dynamic routing to let routers learn about other networks themselves.This learning con
Tags: color-o switch test one-arm routing access via interface implementation representationTo achieve inter-VLAN communication, in addition to configuring the SVI interface on the switch, you can also implement VLAN data forwarding by configuring sub-interfaces under the physical interface of the router.Configuration ideas:1 The access switch configures the corresponding VLAN and sets the access PC port to access mode2 Setting the physical interface of the router to which the switch is connecte
Nat[network address translation] In the absence of IP address in the case of a great use, it can not be normal Sisu network of the intranet address into a legitimate external network address on the public network to send and receive data. At the same time address translation function can also be very good to hide and protect the host network.Nat has static NAT (internal address and external address one-to-one) and dynamic NAT (internal address pool and external address Pool A-do)This time we'll
Network address port Conversion NAPT is a very familiar way of transformation. NAPT is commonly used in access devices, which can hide small and medium-sized networks behind a legitimate IP address.Unlike dynamic address NAT, NAPT maps An internal connection to a separate IP address in the external network, adding a TCP port number selected by the NAT device to the address.This time, let's get to know napt.Configuration ideas1 Configure the router's interface IP address, note the network segment
RIP protocols can be configured in a more convenient way, but the limitations of RIP itself indicate that it is not suitable for medium to large networks. In contrast, OSPF is more complex to configure than RIP, but its functionality and performance are better than RIP.Configuration ideas1 Configure the physical interface address of the router Xia Lian switch and the physical interface address of the router to the other router and open the port2 Configure the address of the switch Xia Lian PC an
Through the previous experiment we learned that by configuring VLANs, the terminals under different VLANs could not communicate with each other, but if you wanted to communicate between different VLANs, you would need to configure inter-VLAN routingLayer three switches have the capability of the network layer and can be forwarded via the routing functionNetwork environment1 set the IP address and gateway of the terminal (192.168.1.1 and 192.168.2.1, respectively).2 VLAN is configured under Layer
In a distributed architecture, the role of the circuit breaker pattern is similar, when a service unit fails (similar to a short-circuit with electrical appliances), through the fault monitoring of the circuit breaker (similar to a fuse fuse), to the caller returned an error response, rather than a long wait. This does not cause the thread to fail to be released for a long time because of the invocation of the fault service, thus avoiding the spread of the fault in the distributed system.Netflix
rather than databases. But at first the idea was inspired by Shenli's article, "Micro-SOA: Principles of Service design and practices", which was thought of in conjunction with other ideas. The idea is only a utility model at present, the specific use of the effect also needs further verification, but only for the small and medium-sized development team, in the early implementation of the micro-service can completely replace the API gateway. is a comparison of the capabilities, implementation t
PlusPointservice.update (); Call Points service to add points to points accountAccountingservice.insert (); Call Accounting service to write accounting source documents to accounting systemMerchantnotifyservice.notify (); Call Merchant Notification Service to send payment result notification to merchant}is local transaction control possible?The above distributed transaction problems require a variety of distributed transaction solutions for processing.Order Processing: Local transactionsCapital
Spring Cloud is adapted to cloud services and is also suitable for enterprise informatization SOA construction. Spring boot is also a tool for the development of RESTful micro services. But for the intranet service, the call between service and service, spring does not deliberately encapsulate, perhaps they think it is not necessary, because already have thrift, ice and other powerful framework.If you use the RESTful service provided by spring boot itself as a call between service and service, t
a distributed transaction solution for Java microservices ArchitectureThe Course catalogue is as follows:1. Course Introduction 20 minutes2. Demonstration of solution effect (combined with real application of payment system) 45 minutes3, Common Distributed transaction Solution introduction 47 minutes4, Message delivery consistency (guarantee of reliable message) 20 minutes5, Message delivery consistency of the exception process processing 16 minutes6.
Resources:Quickly create a restful style API project and API document Automation with Beego: http://www.cnblogs.com/huligong1234/p/4707282.htmlGo Language Building RESTful Web services: https://www.oschina.net/translate/hardcore-google-communicating-goSecure RESTful JSON API with JWT authentication in Golang (US): http://www.tuicool.com/articles/ZnMZF3Polaris: A restful web framework that is implemented with go: http://blog.csdn.net/siddontang/article/details/21088451Some summary of the way of R
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