Quidway S1700 series enterprise network switches
Product OverviewQuidway®S1700 series enterprise network switches (hereinafter referred to as S1700) are the next-generation green and energy-saving Ethernet access switches launched by Huawei. For various applications of enterprise customers, S1700 provides simple and convenient installation and maintenance methods and rich business features to help users build secure, reliable, and high-performance networks. S1700 can be widely used in small busi
optical module Mainly includes Optical electronic devices, functional circuits and optical interfaces, etc., is an important device in optical communication Now let fast fiber optics (feisu.com) I. Look at the demandIt's good to see. whether the requirements are met , such as clothes have many styles, light modules also have many kinds of, mainly divided into: GBIC, SFP, SFP +, XFP, SFF, CF
MPO/MTP high-density optical fiber pre-connection system is mainly used in three fields: application of high-density environment in data centers, application of optical fiber to building, application of optical fiber to optical splitter, 40G, 100g sfp, connection applications of SFP + and other optical transceiver devices. This article focuses on why MPO/MTP high-density optical fiber pre-connection system
interface. What can I do? Because a Cisco TFTP Server upgrade requires that the Cisco switch fail to be connected to a PC with a TFTP Server installed on the network.
After some look, finally found that the super engine 720 above a RJ-45 look like the interface, next to the words Link, play! The result is a try with the network cable, and the indicator light is not on. I thought that I had a hope and fell into the bottom, but I cannot give up.
This interface is the only hope. Otherwise, I woul
, play! The result is a try with the network cable, and the indicator light is not on. I thought that I had a hope and fell into the bottom, but I cannot give up.
This interface is the only hope. Otherwise, I would be discouraged from using xmodem to transmit 41 MB of IOS. Because I used xmodem to transmit a cisco Switch Failure IOS, it would take more than two megabytes. It took two hours. 41 MB? It can take up to 30 hours!
So I started surfing the Internet to find information ......, Finally f
Object: String-to-value ing; self-contained attributes; inherited attributesString, number, and Boolean value: they are not objects. When their attributes are referenced, JS will call new XXX () to convert them into objects. When the reference ends, the temporary object (wrapped object) will disappear. Attribute assignment is ignored. You can also display the packaging object. Typeof: object. No practical significanceOperate on objects through referenceVaR x = {Name: '
Multipath implements LUN device name persistence. I. Additional knowledge based on different transmission protocols, the network card can be divided into three types: an Ethernet card, an FC network card, and an iSCSI network card. (1) Ethernet Adapter: an Ethernet Adapter. The transmission protocol is an IP protocol. It is generally connected to an Ethernet switch through an optical fiber cable or twisted pair. Interfaces can be divided into optical ports and electrical ports. Optical interface
Today there are user Cisco 3850 Insert multimode Gigabit module after error log as follows:*oct 13:48:54:%platform_pm-6-module_errdisable:the inserted SFP MODULE with interface name GI1/0/18 was not suppor Ted*OCT 13:48:54:%pm-4-err_disable:gbic-invalid error detected on GI1/0/18, putting GI1/0/18 in err-disable state*oct 13:48:56:%LINK-3-UPDOWN:INTERFACEGIGABITETHERNET1/0/18, changed state-to-downCisco official website to view the document after proc
Today in the Webmaster station to see a netizen to write the photo album program, the function is quite simple, see he used the aspjpeg to generate thumbnails, not to recall using aspupload upload, so spent one hours to perfect his code.
The following code has a simple comment, if you do not understand, please look at AspJpeg and AspUpload documentation (E, hope to have psychological preparation), can not understand the ask me.
Here's the code:
Copy Code code as follows:
If sessio
H3C S5500-28c-ei
H3C: Manufacturer Brand
s represents the switch, if the SR represents the business router
The first 5 represents the gigabit switch, if 3 represents the gigabit uplink, the hundred trillion downlink. If 7 represents a high-end box switch. 9 represents the core box-type switch
The second 5 represents a three-tier exchange or a two layer, greater than or equal to 5 is a routing switch, and less than 5 is a two-tier switch
00 is to distinguish the same category of multiple ser
.), or with other network devices (storage devices, servers, workstations, etc.) to connect , thus forming a network of hardware devices.
So, the fiber-optic network card is the name in the end is the fiber port HBA card?
In fact, the fiber-optic network card that you often refer to is the HBA card in the Fibre Channel networks.
Because of the different transmission protocol, the network card can be divided into three kinds, one is Ethernet cards, the other is FC network card, the third is iS
SQL Server OS, thread scheduling adopts the cooperative mode instead of the preemption mode. This is because all the tasks in these databases are within the SandBox of SQL Server. SQL Server fully believes in its threads, so unless the thread voluntarily gives up the CPU, SQL Server OS will not forcibly deprive the CPU of the thread. In this way, although the Worker switchover is still performed through the Context Switch of Windows, this cooperation mode will greatly reduce the number of Conte
Php automatically jumps to the Home module using the thinkPhP framework.
Input in the browser
Http: // 127.0.0.1/NovoMagic/index. php/Dac/Test/d
The logon page is automatically displayed.
Http: // 127.0.0.1/NovoMagic/index. php/Home/Login/index.html
I did not write anything in/Dac/Test/d. Why does it jump to the logon page.
Use firebug to view network conditions as follows:
Why does it automat
corresponding object.
Note:
1. the subject is the activity entity in the system, that is, the actual user that is not unfamiliar with the management, and the page contains various processes that represent the user. The object is the passive entity in the system and is operated by the subject, including files, basic tables, indexes, and views.
2. mac indicates the confidentiality of the database. No matter how the data is copied, the mark and data are an inseparable whole. Only users who meet th
Chapter 1 concept of access control
Access control category
Network Access Control
Host/Operating System Access Control
Application access control
Application of encryption in Access Control System
Chapter 2 Mandatory Access Control and autonomous access control
Mandatory Access Control (MAC)
Independent access control (DAC)
Chapter 3 Access Control Model
BELL-LAPADULA confidentiality Model
Lattice Security Model
Biba integrity Model
Clark Wilson Inte
Analysis of selinux and Xinxing linuxselinux in Linux
Selinux is a program initiated by the US National Security Agency. It aims to reinforce the system to a level that can reach the military level. This also provides more powerful protection for Linux security.
The so-called DAC is autonomous access control, that is, in order to be able to share files with other users, each user can only change the permissions of other users of this file before using
MAC system provided in Linux kernel 2.6. For the currently available Linux security module, SELinux is the most comprehensive and fully tested. it was established based on 20 years of MAC research. SELinux combines multi-level security or an optional multi-class policy in a type forced server, and adopts the role-based access control concept. Most people who use SELinux-ready releases, such as Fedora, Red Hat Enterprise Linux (RHEL), Debian, or Gentoo. They enable SELinux in the kernel and prov
Each installation is not the same, and sometimes very troublesome, so write down. My installation process is this:0. Modify the Source\delphi7\make.bat, fill in the correct idedir1, find the Source\delphi7 directory, all the DPK files are here.2. Compile the DAC to run the package, i.e. DAC70.DPK.3. If it is D6 or D7, compile the DAC GUI related package, which is dacvcl70.dpk.4. Compile the
stm32f4xx Official page: http://www.st.com/internet/mcu/subclass/1521.jspIntroduction fpu-floating Point BenefitsDsp-benefitsPricePortfolioTutorial Application Notes, Manuals, etcSoftware ToolsEvaluation BoardStm32446e-eval-evaluation board with Stm32f446ze, it includes a st-link/v2 embedded Debug tool, a 3.2 "X-ray TFT LC D with resistive touchscreen, USB HS FS, USART, IrDA, CAN, Digital microphones, Audio Codec, ADC and Dac,sdram (4M x 16-bit) an
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