the loop, 24 ports of data flow all from 2 SFP ports out;Main uses: LAN set up (hotel, company, internet cafes, etc.), building network and so on.650) this.width=650; "Src=" https://img.alicdn.com/imgextra/i3/681541042/tb2kwincxxxxxxcxpxxxxxxxxxx_!! 681541042.jpg "width=" 720 "height=" 541 "alt=" tb2kwincxxxxxxcxpxxxxxxxxxx_!! 681541042. "/>C) fool switch function, 24 ports can communicate with each other;Main purpose: Used for data sharing between P
At present, the GPON Access Technology in China has developed very rapidly. Many people may not know the characteristics and advantages of the GPON access technology and EPON. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. The arrival of the 3G era will greatly promote the demand for network bandwidth, while the second
I will not go into details about the advantages of EPON and GPON. The main points are as follows:
1. Saving money. This is an absolute principle.
2. high bandwidth, with a bandwidth of 1 to 25 GB
3. High Reliability. Optical splitter can be used in the middle, and no switch is required.
Why do I save money by using EPON?
PreviousArticleLet's talk about saving optical fiber for the moment. Let's talk ab
The recent testing process has encountered a case of system AES and FEC, here is a brief introduction to their principles and applications in the Gpon system.Aesfor the gpon system, the downlink data is sent by broadcast to all ONU, involving a malicious user to eavesdrop on all broadcast frames, so the system introduces the AES encryption algorithm. It is a packet encryption algorithm, that is, the plainte
As the industry-leading optical module device manufacturer, WTD has recently released the Triple-play GPON series.
GPON three-way device is completely based on the ITU-T G.984.2 Class B + standard design, to meet the-40-+ 85 deg C Industrial temperature requirements, the uplink rate is 1.25 Gbps, the downlink rate is 2.5 Gbps. The device has passed the reliability test.
At the same time, WTD for the three
We have introduced the SNMP protocol and the entire Technical System in the GPON technology. If you have any questions, you can refer to "SNMP protocol technology application example". Next we will discuss the software design in this regard. First, let's take a look at the SNMP protocol proxy.
OLT-side SNMP protocol proxy
To complete ONU control on the Management end, ONU must be managed on the OLT end. SNMP has good support for MIB and is simple, it
gigabit passive optical Network (GPON) can provide the path of the network evolution and the bandwidth needed to transfer the new business in the current market technology.
Advantages of PON structure
Compared with the traditional network structure, PON has the following advantages:
Since PON is called passive, it does not require the installation of traditional active devices between central bureaus and user stations. These active devices typical
GPON protocol StackFirst, the Gpon protocol stack is divided into two parts1. c/m plane----A, embedded OAM B, Ploam C, OMCI2, U (user) plane----A, high-level B, GTC layer C, physical layerSecond, c/m planeThe management control plane is divided into 3 parts:1, ploam Physical layer OAM, the main management delay requires low management, ONU registration, ranging, the establishment of OMCC, alarm information
Requirements Description:Since the use of telecom 200M fiber, the resolution card into a dog. Open the domain name around 3 seconds, the less common domain name is around 8s. Suspected telecommunications gateway has a problem, so want to let the router dial authentication , and then set the DNS resolution domain namemodified for the router Dial authentication, the domain name resolution is still unresolved, continue to follow! (Set Ali's DNS 223.5.5.5/223.6.6.6) still slow to parseSolution:Acces
business broadband network, the broadband access network is undergoing profound changes. On the one hand, xDSL technology gradually from adsladsl2adsl2+ to provide a higher bandwidth VDSL2 upgrades, which also requires vdsl2dslam closer to the user side. With the increase of the number of VDSL2 Zhi, the requirement of efficient aggregation of large quantities of dslam is put forward. On the other hand, fiber is rapidly replacing copper wire as an ideal access medium because of its natural defec
1, now learn to sell, learn to use the
2. Environment description
1 Core Switch S5700 (Huawei)
2) access to switch S3700 (Huawei)
3. Request
1 different VLANs can not be accessed from each other, each VLAN can only belong to one department
2 The Department 12 terminals are configured as follows
Terminal 1:192.168.162.2/24 Gateway is: 192.168.162.254
Terminal 2:192.168.162.3/24 Gateway is: 192.168.162.254
3
I'm going to go down to the two and three layers of the switch.
A two-tier switch is equivalent to dividing an interface into multiple interfaces, just to provide a lot of interfaces; (if the landlord is not a professional person can ignore the following content) theoretically it can be understood that the switch does not split the broadcast domain, but split the
Today, the tutor told me about the company's network topology, related to the switch, the basic concept of routers and principles, I am not very clear, so on the internet to learn the information to learn a bit, and then feel that this article is good, so it reproduced, but I reproduced not the original text, and did not attach the original link.
Here I posted a link to my reprinted article: http://blog.csdn.net/herostarone/article/details/8256235
Two
Two-layer switching technology is a mature development, two-layer switch is a data link layer device, can identify the Mac in the packet
Address information, forwarding based on MAC addresses, and recording these MAC addresses with corresponding ports in one of their own.
Address table. The specific work flow is as follows:
(1) When the switch receives a packet from a port, it first reads the source MAC a
1) layer-2 Exchange Technology
The layer-2 switching technology is relatively mature. The layer-2 switch is a data link layer device that can identify MAC locations in data packets.Address information, which is forwarded based on the MAC address, and the corresponding MAC addresses and ports are recorded in a local location.Address Table. The specific workflow is as follows:
1) when the switch receives a pa
Slide switch effect css3 slide switch] Pure CSS3 code sliding switch effect-css3 sliding effect-css3 Slide left and right, css3-css3
Today, I saw a blog post on the css3 event and sorted out relevant materials on the rise. Click the button to slide the switch.
Today, I saw a blog post on the css3 event and sorted out r
Music switch and image switch/do not flex switch operation file admin/dontimg.asp
Option Explicit
Dim room,user,dd,ai,chatdata,sendid,dispstr,dispstr2
User=request.form ("User")
Dd=request.form ("DD")
Ai=request.form ("AI")
Chatdata=application ("Chatdata")
Sendid=finduser (user)
Select Case DD
Case "0"
If ai= "on" Then
Dispstr=right ("0" time,8) ", System, 0,"
Today to share the mouse click button, the picture to switch + picture automatic switch + click on the left and right button picture to switch the combination of the three effects of the code.
The final effect is as follows:
HTML code section:
CSS Code section:
*{margin:0px;padding:0px} Li{list-style:none} A{text-decoration:none} img{b
Simply put: Layer-1 switchOnly physical layer protocols are supported (one phone-controlled switch can be called ???)L2 SwitchSupports physical layer and data link layer protocols, such as Ethernet switches.L3 SwitchSupports physical layer, data link layer, and network layer protocols, such as some switches with routing functions. In terms of the ISO/OSI hierarchy, switches can be divided into L2 switches and L3 switches. A layer-2
Today, I saw a blog post about the CSS3 incident, and then I sorted out the relevant information on a whim. Click the button to achieve the sliding effect of the switch.Today, I saw a blog post about the CSS3 incident, and then I sorted out the relevant information on a whim. Click the button to achieve the sliding effect of the switch.Today, I saw a blog post about the CSS3 incident, and then I sorted out the relevant information on a whim. Click the button to achieve the sliding effect of the
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