... 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 ... Disconnect-Connection-To -Network message. Authentication of user/device. Network Layer Denial of Service (DoS) Attacks Network Layer message sent as Unicast For example, use an Initialize-Routing-Table...
... 8-PSKCDMA2000 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 technologiesGeneral 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 technologiesCDMA2000 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 MẠNGWAN (WIDE AREA NETWORK) I. KHÁI NIỆM :Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... 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 ... nhất được nhận dạng bởi thiết bị hai đầu.5.4 CÔNG NGHỆ VLAN:VLAN là viết tắt của Virtual Local AreaNetwork hay còn gọi là mạng LAN ảo. Một VLAN được định nghĩa là một nhóm logic các thiết bị...
... 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 nhất ... có hiệu quả.Theo mô hình OSI (Open System Interconnect ) thì chức năng của router thuộc mức 3 ( Network ), cung cấp thiết bị với thông tin chứa trong các header của giao thức, giúp cho việc xử...
... Telephony (SRST). ãApplication networking servicesWAE network module (NME-WAE-302, NME-WAE-502). ã Network management servicesThe Network Access Module (NM-NAM) offers network monitoring services ... the network path) or destination IP (service group 62 in the network path). The allocated hash buckets are synchronized within the service group, and the hash 49Enterprise Branch WideArea ... 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 moduleTable 4...
... 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 ... 95134-1706 USAEnterprise Data Center WideArea Application Services (WAAS) Design GuideThis document offers guidelines and best practices for implementing WideArea Application Services (WAAS) ... End Network 12Core Layer 13Aggregation Layer 13Access Layer 13Back-End Network 14SAN Core Layer 14SAN Edge Layer 15WAN Edge Component 15 19Enterprise Data Center Wide Area...
... 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 ... matching traffic pattern, for example, 25Kbps of traffic to “Bronze”San JoseOttawaCAR Bandwidth ManagementCAR Bandwidth ManagementToday, all the packets on the network look the same, and are ... be used to police precedence bits set externally to the network either by the customer or by a downstream service provider. Thus the network can decide to either accept or override external...
... 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, ... generating link up/down SNMP traps and syslog messages for network management systems. 28Ethernet Access for Next Generation Metro and WideArea NetworksOL-14760-01 Design ConsiderationsDesign ... EdgeProvider EdgeCustomerEdge (CE)User Network Interface (UNI)Customer Premise Equipment (CPE) 34Ethernet Access for Next Generation Metro and WideArea NetworksOL-14760-01 Scalability ConsiderationsTable...
... the discussions on network latency,loss, and congestion in the following sections. Network LatencyThe example at the end of the previous section did not take into account network latency.It ... 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...
... 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 ... the enumerator until its end is reached. Remember that we are using modulo 2 subtraction. For example, we can divide 100100111 by 10011 as follows: 10/14/201221Message Filteringã A node...
... 14, 1995Abstract. The requirements of wide- area distributed data-base systems differ dramatically from those of local -area network systems. In a wide- areanetwork (WAN) configura-tion, individual ... to take the available network bandwidth into account. The network bidder will be a sepa-rate module in Mariposa. Since network bandwidth is a dis-tributed resource, the network bidders along ... reserve network resources as a group.Mariposa will use a version of the Tenet network proto-cols RTIP (Zhang and Fisher 1992) and RCAP (Banerjeaand Mah 1991) to perform bandwidth queries and network resource...