1. View Linux detailed version informationFile/sbin/init2. Download the corresponding Nmon versionhttp://pkgs.repoforge.org/nmon/3. InstallationRPM-IVH nmon-14f-1.el5.rf.i386.rpm4. acquisition of data1)./nmon_x86_rhel52-s10-c60-f-M.The-S10 collects data every 10 seconds.-c60 collected 60 times, that is, the acquisition of 10 minutes of data.-F generates a data file name that contains the time when the file was created.The storage directory of the data files generated by-M.2) Capture data snapsh
The broadband access technology in Access network presents a new development trend. The traditional telephone network is bound to transition to the next generation Telecom network with data service as the center, broadband and IP as feature. The telecom business has gradually shifted from narrow-band service such as telephone to multimedia broadband service, which integrates voice, high-speed data and variable video. Faced with many access technology, how to choose the ideal solution, efficient
Notes on data communication and network-wide area network SONET/SDHThe high bandwidth of optical fiber is suitable for carrying large amounts of data at the same time in today's high data rates and low rates. For this reason, optical fiber and the need for data rate or high-bandwidth transmission technology to develop together, and then there is a need for standardization, so the US organization (ANSI) and the European organization (ITU-T) the corresponding standards are defined. Although the tw
MP1570A is a BER tester used by Nippon Corporation for SDH testing.Automated test scenarios and principles for 1.mp1570aarbitrary test pc--(telnet)--Test PC (TCL Interrupt)-->sig_teq_sdh.tcl--> (GPIB line)-->mp1570a chassisMP1570A's situation is unique, first of all its chassis internal software architecture uses the Visa virtual instrument software architecture. So its chassis does not have an IP address, the PC cannot be connected to the chassis via
1. Simple topology diagramLine import------line entrance (my room core switch)------My server terminal assigned IP101.251.65.33 101.251.65.34 || IP route 101.230.0.0 255.255.0.0 nextop 101.251.65.33Dedicated router2. Border Routing 3945 configurationDefine inside ports and zones (My Computer room intranet interface)Define the outside port and region (My computer room outside the network interface, is also the interface of the line access)Access-list 1 Permit 10.1.11.0 0.0.0.255 (allow intranet s
Publish an efficient JavaScript analysis and compression tool JavaScript AnalyserA script compression example is provided to show the JSA syntax compression and optimization functions.Copy codeThe Code is as follows:Try {// Xxxx ();}Catch (e ){Yyyy (
R1 cisco7200, R2 Huawei Ar28-11
After inspection, the subsidiary line router R2 connected with the port of the subsidiary intranet set the firewall rules firewall:
#
Interface ethernet0/0
Description Juyuwang
IP address 10.xxx.xxx.xxx 255.255.0.
If there is no business, the optical port will reverse or shield the alarm... The possible reason for r_los is: 1. the optical cable is disconnected. In this case, find the optical cable breakpoint and splice the cables. 2. the attenuation of the
Comparison of IP transmission technology in cable TV networks
Abstract: IP transmission technology in cable TV networks includes three forms: IP over ATM, IP over SDH, and IP over WDM, this article introduces and compares the three IP Address Transmission Technologies in detail.
Key words: IP technology, cable TV network, IP over ATM, IP over SDH, IP over WDM.
With the rapid development of the global
Wan Interface ConfigurationSeven, POS interface configuration and ManagementThe POS (Packet over SONET/SDH) interface can take advantage of SONET (synchronous Optical Network, synchronous fiber network) or SDH (synchronous Digital Hierarchy, Synchronous digital System) provides the high-speed transmission channel directly transmits the IP data service, is widely used in the metropolitan area network and the
With the rapid growth of Internet users and web numbers, the Internet's demand for bandwidth has increased dramatically. According to statistics, every 6-9 months, the main ISP's Internet backbone link bandwidth will increase by one times, link rate will increase from oc-3/stm-1 to oc-48/stm-16 or oc-192/stm-64 or even higher. It is predicted that the data will be the most important information flow on the future network, it will bring the most profitable business opportunities, and now the Inte
Absrtact: This paper describes the colorful situation of optical network world, expounds the core technology of each series of optical Network, discusses the adaptation of optical network products to IP service, and puts forward the fusion node and intelligent Optical Network technology.
Key words: Synchronous Digital Series SDH, digital cross connection equipment based on SDH s-dxc, dense wavelength divis
With the rapid development of the optical fiber technology, the optical fiber access network system is also improved. Compared with other technologies, the optical fiber access network has many advantages, so I studied the characteristics and performance of the optical fiber access network system. I would like to share with you here, hoping to help you. The optical access network (OAN) technology can be divided into two categories: Active Optical Network (AON) and Passive Optical Network (PON ).
1 MSTP Concept
MSTP (multi-service delivery platform based on SDH) refers to the simultaneous access, processing and transmission of TDM, ATM and Ethernet services based on SDH platform, which provides a multiple service node for unified network management. In addition to the functions of a standard SDH transfer node, the multiple service transfer nodes based on
create scopes is the function. A function is a scope. The object within the function that this is pointing to depends on the case, which is audiocontext for the code above. So if you want to invoke the method or property of visualizer in this callback function, you need to pass it through another variable, which is that, we assign the outer this (to our Viusalizer object) to the new local variable that, This can then be passed to the inner scope without conflict with the original this in the in
fiber access network (OAN) is divided into two types: Active Optical Network (AON) and Passive Optical Network (PON and PassiveOpticaOpticalNetwork.
Ii. Active Optical Fiber Access NetworkActive optical networks can be divided into SDH-based AON and PDH-based AON. CE (a local device of an active Optical Network) and RE (a remote device) are connected through an active optical transmission device. The transmission technology is a widely used
1. MSTP and Its Key Technologies
Currently, MSTP is a hot topic in the world. In fact, the earliest concept in foreign countries is MSPP, that is, multi-service allocation platform. The concept of "Platform" is more appropriate, that is, it relies on a certain technical platform to expand and derive new functions and applications. MSTP is based on the SDH technology platform to Expand functions of data and other new businesses. As we all know,
Label:Recently often see the word "parameter sniffing", read a few articles, so I try to do a test to deepen the impression! Go to the official website to download the database: AdventureWorks2012 Direct Test it! Find a few familiar tables to associate with, Use ProductID as a condition to find two IDs returns a value that has a large difference in the number of rows. productid=870 (4688 lines) productid=897 (2 lines)"Test One"---First empty the plan cache DBCC freeproccache--before execution op
:
1. long transmission distance, fast transmission speed, and low loss;
2. In the communication line, you can reduce the number of relay stations, improve the communication quality, and provide strong anti-interference capabilities.
3. high-speed Internet access or enterprise LAN interconnection can be achieved based on the needs of different user groups for different rates.
4. At the same time, because the optical fiber access method has a high bandwidth for uploading and downloading data, it i
Metropolitan Area Network is the extension and coverage of the data backbone network and long-distance telephone network in the area. It undertakes the complex tasks such as the group user, the commercial building, the intelligent district and so on the service access and the access, and so on, needs to realize the voice, the data, the image, the multimedia, the IP access and each kind of value-added service and the intelligence service through each kind of gateway, And with the operators of lon
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