... Untrusted network IP LAN/ WAN SR/BBMD Trusted BCS network segment SDSD BACnet WideAreaNetwork ... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level firewall. It cannot ... information about the network con-figuration. Authentication, especially of exter-nal BACnet users. Network Layer Attacks I-Am-Router-To -Network The I-Am-Router-To -Network message can...
... tố hết sức quan trọng. Giải pháp mạng WAN ( WideAreaNetwork - Mạng diện rộng ) được áp dụng. Chúng có nhiệm vụ kết hợp tất cả các mạng LAN (Local AreaNetwork ) ở xa lại thành một mạng duy ... tốc độ cao và có độ tin cậy. Tất cả các máy trên mạng đều có những địa chỉ duy nhất khác nhau, WAN là các lớp mạng hợp lại và không có sự trùng lặp về địa chỉ và những địa chỉ đó chính là IP ... Hàng Công Thương Việt Nam đã có những giải pháp hữu hiệu trong công nghệ truyền dữ liệu trong WAN như : Đường Leased Line, Mạng X.25, CD, E1, đường cáp quang(Optical fiber) Đầu tư các trang...
... 1xRTTãOperates on two 1.25 MHz -wide frequency channelsãSupports 144 Kbps packet data transmission 2ObjectivesãDescribe wireless widearea networks (WWANs) and how they are usedãDescribe ... 162.5 Generation Cellular Telephony (continued)ã2.5G network technologies General Packet Radio Service (GPRS)ãFor TDMA or GSM 2G networksãUses eight time slots in a 200 KHz spectrum and ... Kbps for a slowly moving user–2 Mbps for a stationary userã3G network technologies CDMA2000 1xEVDOãFor 2.5G CDMA2000 1xRTT networks 25Binary Runtime Environment for Wireless (BREW)ãBREW...
... cấu hình native VLAN thì phải cấu hình ở giao diện vật lý.CHƯƠNG IILÝ THUYẾT VỀ MẠNG WAN (WIDE AREA NETWORK) I. KHÁI NIỆM :Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều ... vị trí rất xa nhau, ví dụ như những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN (Wide Area Network) TrangNGUYỄN ĐÌNH CÔNG – 36CLTH2929 V./. CÁC CÔNG NGHỆ MẠNG LAN :5.1. CÔNG NGHỆ ... WAN khác là nó có cơ chế kiểm tra lỗi tích hợp sẵn. Chọn X.25 nếu bạn phải sử dụng đường dây tương tự hay chất lượng đường dây không cao.X.25 là chuẩn của ITU-T cho truyền thông qua mạng WAN...
... unoptimized. Branch WAN HA WAN high availability refers to availability of WAN connectivity between the branch and campus WAN edge. It includes redundancy and seamless failover WAN links if a primary ... encapsulation WAN optimization NME-WAE-302NME-WAE-502 Network moduleWAAS network modules cannot be configured as a WAAS CM.Supported on the 2800 and 3800 ISR routers. Network management NM-NAM Network ... 2Enterprise Branch WideArea Application Services Design Guide (Version 1.1)OL-12945-01 Contents WAN Services—Generic Considerations 18 WAN Services—Branch 1 21 WAN Services—Branch 2 21High...
... End Network 12Core Layer 13Aggregation Layer 13Access Layer 13Back-End Network 14SAN Core Layer 14SAN Edge Layer 15 WAN Edge Component 15 19Enterprise Data Center WideArea ... entering the router220572 WAN WAEWAE OutLAN-edge InLAN-edge Out WAN- edge Out WAN- edge InWAE In 34Enterprise Data Center WideArea Application Services (WAAS) Design GuideOL-12934-01 Design ... supports the storage areanetwork (SAN) fabric and connectivity between servers and other storage devices, such as storage arrays and tape drives.Front End Network The front-end network contains...
... FTPPackets are:Marked (colored) at ingress at network edge IP Precedence / Differentiated Services Code Point (DSCP) setPoliced and shaped at the network edgePotentially discarded by Weighted ... Priority)WFQInterface3 33 32 24 3 2 1 1VV4 44 4PQ WAN CircuitExhaustiveQueuingWFQDLCI3 33 32 LPQ - voiceWFQ - Data 4 44 4PQ WAN CircuitWFQ - Data WFQ - Data InterfaceHighLowLMI1 ... Systems Network Architecture (SNA)Delay sensitive. Encapsulated in TCP.ã OtherDelay insensitive, drop insensitive.Market Data is seen as the most important application. The customer does not want...
... Chapter11 WideArea Networking Protocols Introduction to WideArea Networks WAN 是覆盖地理范围相对较为广阔的数据通信网络,它一般是利用公共载体(比如电信公司)提供的设备进行传输 .WAN 技术运行在 OSI 的最下 3 层 广域网 (Wide Area Network, WAN) 的一些术语 ... 4.CO:连接用户到服务商交换环境网络的点,有时候 CO 也叫做 point of presence(POP) 5.toll network: Internet service provider(ISP)拥有,各种网络设备资源集合的网络 WAN Connection Types WAN 连接的一些类型,如下图: 如图: 1 为租用线路,有时候也叫专线或点对点连接.预先布置好的通信路径,该路径从客户端通过电信公司的网络连接到远程网络.因为这样的通信线路通常是通过从电信公司租用而来,所以就 ... Mode,ATM):国际电信联盟电信标准委员会(ITU-T)制定的信元(cell)中继续标准.ATM 使用固定长度的 53 字节长的信元方式进行传输,ATM 网络的面向连接的 Cabling the WideAreaNetwork Cisco 的串行连接支持几乎所有类型的 WAN 服务.HDLC,PPP 和帧中继使用相同的物理层定义的接口,但是和 ISDN 的不一样.我们先来回顾下 router 的接口类型: 1.局域网接口...
... and WideArea NetworksOL-14760-01 Design Considerations ãUse of EIGRP stub areas eliminates queries to spoke routers. ãOSPF must periodically synchronize router databases within an area, ... EdgeProvider EdgeCustomerEdge (CE)User Network Interface (UNI)Customer Premise Equipment (CPE) 34Ethernet Access for Next Generation Metro and WideArea NetworksOL-14760-01 Scalability ConsiderationsTable ... Access for Next Generation Metro and WideArea NetworksOL-14760-01 Design RequirementsFigure 13 Commingled Dual-Tier ModelThis topology can be used for any WAN type (MPLS, Internet, SONET/SDH,...
... subjects as the CCIE program expands. WAN Technologies Wide area networks (WANs) provide connectivity across longer distances thanlocal area networks (LANs), and WANs are typically slower than LANs ... status of WAN links 2○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○Chapter 9This chapter examines the methods used to transport data over widearea networks.We will cover common WAN technologies, ... (SSCOP), User- Network Interface (UNI), Network- Network Interface (NNI), Interim LocalManagement Interface (ILMI), cell format, quality of service (QoS), RFC1483, RFC 1577, Private Network- Network...
... due to network oversubscription. Network latency, another performance “problem child,” is the amount of time taken for data totraverse a network in between two communicating devices. Network ... withFirewallSwitchRouter/SwitchProcessorMultilayerSwitchFirewall ServicesModule Wide- Area Application EngineApplication ControlEngine 16 Deploying Cisco WideArea Application Servicescourse, this number might increase ... exchanged between nodes on the network, so any latency found in the network also impacts the rate at which these control messages can be exchanged. 12 Deploying Cisco WideArea Application Servicesand...
... LANs❚Mobility❚Flexibility❚Hard to wire areas❚Reduced cost of wireless systems❚Improved performance of wireless systems William StallingsData and Computer CommunicationsChapter 13Local Area Network Technology ... transmitter❙Must satisfy these for all combinations of sending and receiving station on bus❙Usual to divide network into small segments❙Link segments with amplifies or repeaters Star Ring Architecture❚Feed ... Wireless LAN Applications❚LAN Extension❚Cross building interconnection❚Nomadic access❚Ad hoc networks ...
... nodes)(2drvcmpbusproptttt 10/14/201228 10/14/201230 10/14/20121CAN Controller Area Network 10/14/201233Given:ã CPU oscillator frequency = 32 MHzã Bit rate = 800 Kbpsã Prescaler= ... transmission of a message, a maximum of five consecutive bits may have the same polarity.ã The bit-stuff area in a CAN bus frame includes the SOF, Arbitration field, Control field, Data field and CRC...