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1、球山花园信息化小区解决方案1 球山花园信息话小区需求分析.11.1 建设背景.11.2 实际调查.11.3 流量预计.12 网络建设的目标.13 网络设计的原则.14 网络解决方案.14.1网络拓扑.24.2网络设计及主干技术选择.25 投资预算及设备清单.25.1设备清单.25.2投资预算.3信息化小区需求分析：u 建设背景：温州经济发展迅速人均生活水平较高，良好的经济环境和发展氛围激发了人们获取广泛信息的需求，也为温州通信的发展提供了广阔的市场空间。随着国家房改政策、措施的不断实施和推进，住宅的商品化、社区化、信息化将成为发展方向，国家建设部已对信息化小区的成次划分等做出了具体规划和要求。
2、同时，随着网络带宽的扩大和各种网络技术的发展，网络的应用领域变得越来越广泛。随着计算机技术和网络技术的发展，家庭计算机的普及，“上网”已经成为人们的常用语，各种信息网，服务网已经成为现代人们生活中必不可少的重要内容。一般，对于宽带住宅小区用户群来说，一个小区或一栋大楼，可以10M/100Mbps带宽接入IP城域网，利用小区或大楼的综合布线为用户提供高速上网的服务。信息化小区/大楼的宽带接入是一种新的上网接入方式，具有接入成本低、带宽高、使用简便等特点，令房地产开发商、物业管理商、住宅用户等多方受益。住宅用户更可以享受到10M以太网直接上网的便利，不需占用电话线，再不必为带宽烦恼。v 实际调查：
3、球山花园住宅小区有3栋楼，共有住房63套（由于楼房太多，所以只采用三栋楼作为模型）。三栋楼成三角形坐落，每栋楼高7层，除第21栋楼外，其他各栋楼每层都有2间住户。第20栋楼有三个单元，第21栋楼只有一个单元，第22栋有二个单元。第21栋楼对面有一座2层的小区活动中心，准备用于放置交换机、服务器设备等。w 流量预计鉴于现在大多数网络用户都喜欢上网看电影和下载软件等，预计流量高发时期，会有近30%的用户同时进行视频点播和近40%的下载软件，还有30%的用户使用带宽比较小的服务，所以网络主干需要近100Mbps的带宽。以上带宽是依据三栋楼的实际所需计算出来的，而对于整个小区接近于它的10倍，即主干采
4、用1000Mbps的带宽。网络建设的目标：网络速率要求10M交换到桌面，网络技术可支持数据、语音、图像等各种信息的传输。尤其多媒体应用，如VOD、视频会议、数字电视及音频广播、新闻点播、图文广播等。可分为以下几类： 点播类：点播类节目是指将视、音频节目以固定格式（如MPEG-1/2、Real 格式）存储在服务器中，供用户在网上点播的一种形式，如影视点播、音乐点播、科教节目和运动知识技巧等。 直播类：指将实时视、音频节目直接通过网络在网上实时发布的一种方式。主要用于重大事件、重要体育赛事等的直播，实时远程教育也可采用这种形式。采用Real格式。 广播类：可用于发布重要通知或广告等。网络设计的原则
5、： 可靠性：选择的技术和设备必须有效地解决服务质量的问题，满足应用的需求。 可升级和可扩展性：随着技术不断发展、新的标准和功能不断增加，网络必须可以不中断的升级提供更先进、更多的功能，服务更多的用户。 安全性：使用VLAN以确保用户之间的相互隔离，并确保网络系统本身的安全。网络解决方案：u 网络拓扑：v 网络设计及主干技术选择：信息小区网络建设采用基于三层交换的千兆以太技术,在小区核心引入带光口的千兆以太网交换机，通过光纤以千兆速率上连至ISP接入区域交换机，可以使用户以高带宽连接Interner。小区内部形成扩长星型结构，每栋单元楼内放置带百兆光口的以太网交换机，通过百兆光纤将小区核心和单元
6、楼连接起来。在住户的家中添加以太网络RJ45信息插座作为接入网络的接口，布放五类线，连至用户计算机的网卡，使最终用户上网速率达到10M或更高，以满足用户对高带宽和高服务质量的需求。在小区核心千兆以太网交换机的一个端口上连接一台主服务器和一台辅服务器，给用户提供视频点播、实时视、音频节目直播、通知的发布等服务。鉴于未来的升级等多方面的考虑，故采用1000M骨干带宽，以适应将来对网络带宽更高的需求，并使用48口，以考虑到以后小区扩建的需要。小区内依据用户类型来划分VLAN，以确保用户之间的相互隔离。将小区内的用户分为三类：小区网络管理员、小区管理员及居委会领导、小区普通用户。据此将小区网络换粉成三
7、个VLAN，把网段201.100.10.0划分成三个子网段：201.100.10.0、201.100.10.32、201.100.10.64，子网掩码为255.255.255.218。但小区用户可以通过三层交换来实现相互之间的通信。在小区的服务器上可以设置用户名和密码，供有小区网络管理员及拥有权限的用户进行管理、维护和访问，其他普通小区内用户只能以只读的的方式访问其服务，并杜绝外部用户对本地服务器的访问。并可以在三层交换机上设计ACL等，以限制外部流量，来保护小区的网络的安全。如果预算允许的话，可以购置一台专门的防火墙，以进一步保护小区网络的安全。投资预算及设备清单：设备清单序号名 称 及 型
8、 号说明1服务器：205-23XPIV2.0G 256M 40XCD 1000M 40G-IDE 152Catalyst 2948G-L3拥有48个RJ-45 10/100端口和2个千兆位以太网上行链路端口及模块化GBIC接口的固定配置第三层以太网交换机。3交换机：3C16950SSII1100 2个10/100M自适应口 24个10M口41100CAT5PS-2424口超五类配线架51061004CSL超五类双绞线6FL2EP-10ST-ST（双芯）光纤跳线-10B其他花费清单序号名称说明1网络管理员管理、维护网络和服务器等设备2中文Windows NT SERVER服务器操作系统3Cisc
9、o Works 2000 网管软件4UPS电源10KV 4H在线建设整个网络需要Catalyst 2948G-L3型三层以太网交换机一台、3C16950型交换机30台、205-23X型服务器2台、24口超五类配线架31个、超五类双绞线3000米、双芯光纤2000米、网络管理员两名、Windows NT SERVER和Cisco Works 2000各一套、UPS电源一个。据此可以计算出整个网络投资的初步预算为：110万元。由于本设计采用了比较先进的三层交换机和对产品价格都是进行估算，所以使得此方案的预算比较高。待添加的隐藏文字内容3Editors note: Judson Jones is a
10、 meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: jnjonesjr (CNN) - I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space he
11、ar the faint beeps of the worlds first satellite - Sputnik. I also missed watching Neil Armstrong step foot on the moon and the first space shuttle take off for the stars. Those events were way before my time.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on t
12、he shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the stars.As a meteorologist, Ive still seen many important weather and space events, but right now, if you were sitting next to me, youd hear my foot tapping rapidly under my desk. Im an
13、xious for the next one: a space capsule hanging from a crane in the New Mexico desert.Its like the set for a George Lucas movie floating to the edge of space.You and I will have the chance to watch a man take a leap into an unimaginable free fall from the edge of space - live.The (lack of) air up th
14、ere Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I watched the balloons positioned at different altitudes in the sky to test the winds, knowing that if they would just line up in a vertical straight line we would be go for launch.I
15、feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a leap of faith - the feeling of pushing the envelope into uncharted territory.The guy who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will ne
16、ver reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the partially filled balloon that would take him to the upper end of our atmosphere. As soon as the 40-acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew
17、 it was over.How claustrophobia almost grounded supersonic skydiverWith each twist, you could see the wrinkles of disappointment on the face of the current record holder and capcom (capsule communications), Col. Joe Kittinger. He hung his head low in mission control as he told Baumgartner the disapp
18、ointing news: Mission aborted.The supersonic descent could happen as early as Sunday.The weather plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with caps
19、ule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers)
20、and into the stratosphere. As he crosses the boundary layer (called the tropopause), he can expect a lot of turbulence.The balloon will slowly drift to the edge of space at 120,000 feet (22.7 miles/36.53 kilometers). Here, Fearless Felix will unclip. He will roll back the door.Then, I would assume,
21、he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, hell be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It
22、will be like he is diving into the shallow end.Skydiver preps for the big jumpWhen he jumps, he is expected to reach the speed of sound - 690 mph (1,110 kph) - in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But t
23、his will not be enough to stop him completely.If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes its not needed. Instead, he plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,00
24、0 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach speeds.Even if everything goes as planned, it wont. Baumgartner still will free fall at a speed
25、 that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).It might not be the moon, but Kittinger free fell from 102,800 feet in 1960 - at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to br
26、eak that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way Id miss this.Editors note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from torn
27、adoes to typhoons. Follow him on Twitter: jnjonesjr (CNN) - I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the worlds first satellite - Sputnik. I also missed watching Neil Armstrong step foot on the moon a
28、nd the first space shuttle take off for the stars. Those events were way before my time.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on the shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the star
29、s.As a meteorologist, Ive still seen many important weather and space events, but right now, if you were sitting next to me, youd hear my foot tapping rapidly under my desk. Im anxious for the next one: a space capsule hanging from a crane in the New Mexico desert.Its like the set for a George Lucas
30、 movie floating to the edge of space.You and I will have the chance to watch a man take a leap into an unimaginable free fall from the edge of space - live.The (lack of) air up there Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I wa
31、tched the balloons positioned at different altitudes in the sky to test the winds, knowing that if they would just line up in a vertical straight line we would be go for launch.I feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a
32、 leap of faith - the feeling of pushing the envelope into uncharted territory.The guy who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will never reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the parti
33、ally filled balloon that would take him to the upper end of our atmosphere. As soon as the 40-acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew it was over.How claustrophobia almost grounded supersonic skydiverWith each twist, you could see the wrinkles of disappo
34、intment on the face of the current record holder and capcom (capsule communications), Col. Joe Kittinger. He hung his head low in mission control as he told Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunday.The weather plays an important role
35、in this mission. Starting at the ground, conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. I
36、t will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause), he can expect a lot of turbulence.Th
37、e balloon will slowly drift to the edge of space at 120,000 feet (22.7 miles/36.53 kilometers). Here, Fearless Felix will unclip. He will roll back the door.Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom
38、 of a swimming pool that he wants to land on, but not too hard. Still, hell be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end.Skydiver preps for the big jumpWhen he jumps, he is expected to reach the
39、speed of sound - 690 mph (1,110 kph) - in less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him completely.If he goes too fast or spins out of control, he has a stabilization parachu
40、te that can be deployed to slow him down. His team hopes its not needed. Instead, he plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have
41、 a reserve parachute that will open automatically if he loses consciousness at mach speeds.Even if everything goes as planned, it wont. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).I
42、t might not be the moon, but Kittinger free fell from 102,800 feet in 1960 - at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to break that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way Id miss this.
