dwdm 100g

When the optical network technology such as DWDM and frequency division switch rapidly increases the network capacity, the bandwidth becomes abundant. However, how to make better use of bandwidth, how to the application of the Internet, content, and not just signal, data frame management, become the focus of service provider. Because in the case of sufficient bandwidth, the network layer will no longer be the main problem, improve the network service

Summary Optical switch is an important optical passive device, which can break and switch the light signal in optical network system. Optical switches are widely used in optical division/interpolation Multiplexing (OADM), Time Division Multiplexing (TDM), Wavelength Division multiplexing (WDM). Optical switch has become the focus of major communication companies and research units for its high speed, high stability and low crosstalk. Optical switch has a broad market prospects, is one of the mo

telecommunications network With the increasing popularity of gigabit to desktop, Gigabit Ethernet technology will be widely used in the convergence layer and backbone layer. But in the current network situation, the first application of Gigabit Ethernet will be the education industry and data center export, the backbone of the metropolitan area network. When building a metropolitan area network, if the convergence layer and even the backbone layer Unified Ethernet technology, will have equipm

resources. But hardware RAID mode requires a high upgrade cost for storage expansion, and software RAID upgrades cost less when storage expands, and the Ncube company's video server uses software RAID mode. Ii. input and Output interface type The main features of video server interface are: Multiple storage i/o+ multiple network I/O. Storage I/O is typically ultra SCSI, ULTRA2 SCSI, ULTRA3 SCSI, or fiber Channel, typically with one disk array per SCSI or FC channel, and storage I/O capabilit

the recovery function of SDH network. Mippo Ethernet: Enables Ethernet networks to be transmitted through multiple wavelengths or multiple light waves or a single optical fiber, thereby greatly increasing network capacity. CWDM: Compared with DWDM, CWDM is more suitable for building a metropolitan network, it transmits a small number of wavelengths in one fiber, while CWDM equipment is cheaper and consumes less power, some manufacturers have alread

bandwidth utilization of the loop, and the switching of business protection on one optical fiber has no effect on the business on the other. RPR is a new type of Mac protocol, which is specially constructed for ring topological structure, and has the characteristics of flexibility and reliability. It can adapt to any standard (e.g. SDH, Ethernet, DWDM, etc.) of the physical layer frame structure, can effectively transfer voice, data, images and othe

(Fan Zhongli Nanjing University of Posts and Telecommunications, Nanjing 210003) A standardized optical control plane is introduced in this paper. The optical control plane is decomposed into a few basic processes such as Neighbor Discovery, service discovery, Connection control and Topology/resource discovery. Different network organization and segmentation result in several different automatic configuration models: Soft persistent link model, user interface model and Peer-to-peer model. Final

Introduction The internet is rapidly becoming a choice for public data networks. This conclusion can be demonstrated by the rapid growth of user needs and new applications, the increase in mainstream applications, and the growth of important businesses. As customers begin to hope for the reliability and effectiveness of a public telephone exchange network (PSTN) service, Internet service providers (ISPs) are trying to maintain control to cope with high growth and increasing complexity. Traditi

Don't explain what Qsqlrelationaltablemodel is. Look at the following code: 3.1 Create model model = new Qsqlrelationaltablemodel (); Model->settable ("tyzb_xmmx"); Model->setfilter (filter); Model->setsort (Tyzb_xmmx::xh,qt::ascendingorder); 3.2 The Foreign key column displays the problem model->setrelation (tyzb_xmmx::d wdm_id,qsqlrelation ("DM_DWDM", "DWDM", "DWMC")); Model->setrelation (Tyzb_

1. Download http://dev.mysql.com/downloads/connector/python/because Python installs 3.4, you need to download the following mysql-connector-python:after successful download:2, install Mysql-connector-python, you will find the installation of silent, you feel what all the wood has occurred, in fact, a lot of things happened, I observed that the Python installation directory under the more write things:MySQL folder more things, but also more mysql_connecter_....-info3. So you can connect to MySQL

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downloaded)650) this.width=650; "src=" Https://s1.51cto.com/wyfs02/M01/A2/94/wKioL1misRXCSEwPAACUyX6fo5I782.png "style=" float : none; "title=" 23 Select Os.png "alt=" Wkiol1misrxcsewpaacuyx6fo5i782.png "/>Select Ubuntu-14.04-server-amd64.iso image to add to the virtual CD drive650) this.width=650; "src=" Https://s2.51cto.com/wyfs02/M00/A2/94/wKioL1mitWuQXun5AAB6lJTRxYs708.png "style=" float : none; "title=" 24 add hard disk. png "alt=" Wkiol1mitwuqxun5aab6ljtrxys708.png "/>Then add the hard dr

Environment: Red Hat 4.8.3-9Software dependencies: NoneUse reason: Request 100G virtual machine, but DF view found only 20GTo view existing partitions hanging in the situation:[[Emailprotected]~]$df-h File System capacity used available used% mount point/dev/mapper/ Centos-root14g994m13g7%/devtmpfs 7.8g 07.8G0%/devtmpfs 7.8g 07.8G0%/dev/shmtmpfs 7.8g 8.5M7.8G1%/runtmpfs 7.8g07.8g 0%/sys/fs/cgroup/dev/sda1 497m125m373m25%/bootDue to the

Preparation material: Ubuntu image,: Http://www.ubuntu.com/download/desktopISO image software: UltraISO, Baidu search download20-30g about the free hard disk space, there is no matter how to make these space, the simple is to delete the tail partition of the hard disk, note the data storage, and then re-partition, and then left 20 to 30G of space does not partition on the line, for example, my last partition has 100G, we put this

-m "comment description" filename# unlockSVN unlock filename5.7 Code Update conflictsIf an expiration is provided at the time of submission, the code conflict is explained by SVN update filename, then SVN resolved filename, and then the SVN commit-m "comment description" filename.5.8 Viewing logsSVN log filename5.9 Viewing file informationSVN info filename5.10 Repository MergingMerge library 1 into Library 2: first checkout the Library 2 code to the local directory (svn co url2), then go to this

tree for information about free space.Dynamic Inode AssignmentIn order to understand dynamic inode allocation, it is still necessary to use EXT2/3. The following table lists the limitations of the Ext2 file system:Table 1. Ext2 restrictions Limit Maximum number of files File system space Size v/8192For example, 100G size file system, can create a maximum number of files 131072 Figure 4 show

Requirements: The virtual machine needs to expand the hard disk capacity, through the Vcenter Edit resource settings, the original 50G expansion to 100G. But not immediately. The following actions are available:650) this.width=650; "src=" Http://s4.51cto.com/wyfs02/M00/83/B1/wKioL1d6mWuCIUL8AAA4Dt_3u9w879.png "title=" Qq20160705011341.png "alt=" Wkiol1d6mwuciul8aaa4dt_3u9w879.png "/>After the modified 100G,

First, install Ubuntu dual system in Windows7Tools/MaterialsWindows7 64-bitUbuntu 16.04 32-bitUltraISO the latest version (used to bake the image file onto a USB flash drive)Empty u disk (if you have files, please backup first)　　1. Allocate a piece of disk space (100G) for the installation of ubuntu16.04Win7 comes with the tools for allocating disks ([Computer]->[management]->[Disk Management]-> Select compressed disks->[Right-click]->[Compressed volu

, logical partition starting from 5How to view partitionsFdisk-lParted-lLinux Partitioning recommendationsMust have at least/partitionThe role of swap: virtual memory, the capacity of swap,1.5* memory after the physical memory is exhausted. When the memory is greater than 16G, the virtual memory will be 6-16.General partitions /boot, storage of the Linux kernel and boot program, 100m-200m, fixed size, primary partition (not required) Swap, 1-2 times the memory, can also be divided.

Ubuntu System Installation1. Do RAID5, and install ubuntu16.04 system, partition/100g,/boot 512mb,data remaining, all use XFS files.2. Set root can be directly remote system.The first step is to do RAID5, with Dell server as an example:The following screen appears when booting, press Ctrl+r as prompted,The following is a disk array configuration interface, operated by F2, and the first to create a new virtual disk.Doing RAID5 requires at least three h