goldberg apos s network optimization codes

... BSS Hiện node mạng Viettel Mobile khu vực gồm: • MSC Ericssion: MSCHCM1 -> MSCHCM8 • MSS Nokia: MSSHM1 -> MSSHM6 • HLR Ericssion: HLR2, HLR4 • GMSC Huawei: GHCM1 GHCM2 • STP Huawei: SGHCM1 SGHCM2 ... • STP Tekelec: STPHCM1 STPHCM2 • CRBT Huawei • SMSC: SMSC2 • 69 BSC Alcatel: BSCHCM1 -> BSCHCM69 • 2986 trạm BTS Alcatel Viettel Mobile khu vực s dụng thiết bị hệ thống BSS Alcatel (gồm 69 BSC) ... (BSC): Có 69 BSC, gồm loại BSC G2_A9120 (39 BSC) MX BSC_A9130 (30 BSC), cấu hình quản lý loại BSC sau: Tổng s TRX FR BSC Erlang BTS CELL configuration Tổng S TRX HR S kênh N7 S kênh voice S ...

Ngày tải lên: 26/04/2013, 11:16

... training sessions TISS said the training sessions were stopped due to staff changes TISS also sends daily SIEM reports to EPA s ISOs for review and analysis However, EPA s ISOs stated the files were ... curriculum TISS conducted informal training sessions with EPA s regional ISOs to address questions on tool usage and how to generate reports Those sessions did not include written agendas or discussion ... prevention systems and other mechanisms is essential Establishing clear procedures to assess current and potential business impacts of incidents is critical, as is putting in place effective methods to...

Ngày tải lên: 05/03/2014, 21:20

... báo khác  S dụng máy tems để tối ưu cho mạng GSM Để s dụng máy tems ta cần chuẩn bị s thiết bị sau:       Máy tính cài phần mềm cho tems Dongle GPS dây hoạc bluetooth Máy Tems Road map ... với thiết bị Sau kết nối thiết bị ta cần kiểm tra cổng giao tiêp với máy tính Công GPS Công GPS Cổng máy TEMS Cổng máy TEMS Giao diện phần mềm TEMS Tems có hai giao diện   TEMS Investigation 8.0.4 ... handover sang cell khác 26 Vùng phủ trạm 27 Trong trình test ta cần quan tâm tới s thông s sau: RxLev: mức tín hiệu thu  RxQual: chất lượng tín hiệu  C/I : tín hiệu nhiễu  Serving + neighbors ...

Ngày tải lên: 09/03/2014, 12:20

... Elements of Quality Network Performance Addressing Speed Issues Addressing Reliability Issues Addressing Security Issues Proactive Management of Network Resources with Sniffer Pro AntiSniff:Who s Sniffing ... compression ■ Session layer The session layer is responsible for creating and managing sessions between end systems.The session layer protocol is often unused in many protocols Examples of protocols ... address size from 32 bits to 128 bits Classes When the original IP routing scheme was developed, IP addresses were divided into five classes IP addresses most commonly come as Class A, B, or C Class...

Ngày tải lên: 01/06/2014, 11:01

... transmission from S in the first slot, two cases can be distinguished: (1) R is able to decode the transmission from S and cooperates with S in the second slot, hence D receives two messages carrying ... uncoded and R sends extra parity bits If D receives the transmissions of S1 and S2 perfectly, it has all the information bits So the challenging cases are the first two possibilities Let us assume that ... likewise with ρi The goal of this research is to design a full-diversity ensemble of LDPC codes for the MARC An ensemble of LDPC codes is the set of all LDPC codes that satisfy the left degree distribution...

Ngày tải lên: 21/06/2014, 17:20

... Elements of Quality Network Performance Addressing Speed Issues Addressing Reliability Issues Addressing Security Issues Proactive Management of Network Resources with Sniffer Pro AntiSniff:Who s Sniffing ... compression ■ Session layer The session layer is responsible for creating and managing sessions between end systems.The session layer protocol is often unused in many protocols Examples of protocols ... address size from 32 bits to 128 bits Classes When the original IP routing scheme was developed, IP addresses were divided into five classes IP addresses most commonly come as Class A, B, or C Class...

Ngày tải lên: 13/08/2014, 12:21

... hosts Sniffer Pro Fundamentals Sniffer Pro is a network analyzer from the Sniffer Technologies business unit of Network Associates, Inc Sniffer Pro, the industry s most widely used tool for network ... courses to network professionals so that they can learn about network analysis, troubleshooting methodologies, and new networking technologies such as wireless LANs Sniffer University also prepares ... unstable Sniffer Pro machine This is because the software installation makes modifications to the registry, updates some system files, and adds a service to the NIC drivers Some of these changes...

Ngày tải lên: 13/08/2014, 12:21

... groups of statistics are available: ■ Network Shows Packets /s, Utilization /s, Errors /s, Drops /s, Bytes /s, Broadcasts /s, and Multicasts /s ■ Detail Errors Shows Runts /s, Oversizes /s, Fragments /s, ... the list of history samples as large icons ■ Small Icons View the list of history samples as small icons ■ List View the list of history samples as a text list ■ Details View a detailed list of ... Jabbers /s, CRCs /s, Alignments /s, and Collisions /s ■ Size Distribution Shows 64-byte packets /s, 65–127-byte packets /s, 128–255-byte packets /s, 256–511-byte packets /s, 512–1023-byte packets /s, and...

Ngày tải lên: 13/08/2014, 12:21

... timestamps are useful to help find problems on your network In some instances, using timestamps is critical to resolving network issues such as slow response times from a host to another host Timestamp ... shows you statistics on client/server response time ■ Server Response Time This button shows you statistics on server response time ■ Refresh This button refreshes your view to see new items found ... addresses, or MAC addresses Troubleshooting with the Expert System As you will soon see, the expert system is a boon, but it s not something to be trusted with all decisions It s not always correct...

Ngày tải lên: 13/08/2014, 12:21

... hosts on the segment The number of multicast packets per second, as recorded by Sniffer Pro Multicasts are packets sent from a host to a specific and intentional group of hosts Errors /s Drops /s ... shows a description of the various errors Table 5.2 Detail Errors Descriptions Error Description Runts /s The number of runts per second A runt is a frame that is too small (less than 64 bytes) ... Alignments /s Collisions /s NOTE You will see us repeat Table 5.2 s contents repeated in many different formats throughout the book in discussion of discussing other topics It is important for the Sniffer...

Ngày tải lên: 13/08/2014, 12:21

... This section has provided an overview of the various network devices and topologies to begin our discussion on troubleshooting slow networks whose sluggishness is caused by excessive collisions ... works by analyzing all three stages of TCP communication: session establishment, data transfer, and session closing As a bonus, we get the user s password Analyzing the Capture Figure 6.14 shows ... workstation to identify this TCP session Figure 6.14 Three Stages of TCP Communication: Session Establishment, Data Transfer, and Session Closing www.syngress.com 329 219_sniffer_06.qxd 330 6/28/02...

Ngày tải lên: 13/08/2014, 12:21

... retransmissions Some other general network issues such as broadcast storms and routing loops can also cause performance issues.These issues typically can be detected at this point of analysis without ... be assigned to network nodes such as servers, workstations, and routers.The last group of IP addresses, Class D addresses, is reserved for a special purpose:They represent multicast groups, which ... these bits, each network belonged to a class; this method of separating the network and host parts was called classful Class A, Class B, and Class C IP addresses are unicast IP addresses, so they...

Ngày tải lên: 13/08/2014, 12:21

... analysis as is provided within Sniffer Pro A Distributed Sniffer system consists of Distributed Sniffer Servers (DSS) that are controlled by SniffMaster Consoles (clients) A SniffMaster Console ... alarms received over that period: ■ Access to Resource Denied This error message was generated as a result of a server message block (SMB) session access restriction Generally speaking, this error ... finished It is time to return to the first step and reassess your assumptions regarding the issues In addition, refer to Chapter 1, where we discussed basic troubleshooting steps and methodologies Alarm...

Ngày tải lên: 13/08/2014, 12:21

... Suppress Go Ahead Some of these options are displayed in Packets and (see Figure 11.17) An in-depth analysis of the Telnet options is not necessary to understand its vulnerabilities and so is ... link because the stations share the link.The cable-addressing schemes use varying amounts of addresses per segment or link—usually around 1000 Response time can suffer if this number becomes too ... source address instead of an alias name A stealth source scan is a reconnaissance scan that uses multiple source addresses, including the hacker s This technique is used to thwart intrusion detection...

Ngày tải lên: 13/08/2014, 12:21

... broadcast and bandwidth junkies As a host on the network uses NetBIOS, it works as a broadcast-based protocol.Without the use of a WINS server, you are going to have massive broadcast issues with ... protocols and eliminate them AppleTalk AppleTalk uses multicasting extensively to advertise services, request services, and resolve addresses On startup, an AppleTalk host transmits a series of ... ALERT For test purposes, the switch used in this exercise has been sanitized and is using the default SNMP strings of public and private so that the switches don’t expose the true passwords that were...

Ngày tải lên: 13/08/2014, 12:21

... Wireless Environment Some Details about the different Access Networks ● GERAN (1991 - ) The GSM EDGE Radio Access Network is based on TDMA and was originally standardized by ETSI It represents the ... the most successful mobile standard to date with app billion subscribers worldwide Its major application is voice traffic but through GPRS and EGPRS, GSM also provides packet-switched services ● ... ) UMTS is based on W-CDMA and was the first project of 3GPP The system was intended to replace the GSM but till today, UMTS and GSM usually coexist UMTS was enhanced through HSDPA and HSUPA which...

Ngày tải lên: 18/10/2015, 23:57

... and base stations, and the strong and weak signal strength is shown by solid and dashed lines respectively For simplicity, assume the user just selects the cell with the strongest signal strength ... wireless parameter settings When the system is stable, in order to adapt to the changes in network conditions, some system parameters have to be necessarily optimized This is part of the task mainly ... describes many philosophical aspects of PSO and swarm intelligence An extensive survey of PSO applications is made by Poli [84, 103] PSO is a metaheuristic as it makes few or no assumptions about...

Ngày tải lên: 21/04/2016, 20:55

... it is just not currently reachable through the network 48.2 On To NFS One of the earliest and quite successful distributed systems was developed by Sun Microsystems, and is known as the Sun Network ... does not receive a reply There are many possible reasons for this failure to respond In some cases, the message may be dropped by the network; networks lose messages, and thus either the request ... writes is the same as the outcome of a single one c 2014, A RPACI -D USSEAU T HREE E ASY P IECES 10 S UN ’ S N ETWORK F ILE S YSTEM (NFS) Case 1: Request Lost Server Client [send request] (no mesg)...

Ngày tải lên: 16/08/2016, 19:10

... of these tests was to establish statistically which conguration presented the smallest S D Ratio among the congurations tested By comparing results obtained from Taguchis analysis and those obtained ... 60 240 300 400 500 Isotropic Isotropic Isotropic Isotropic Isotropic Isotropic Isotropic Isotropic K-Means K-Means K-Means Sub-Sampling K-Means Sub-Sampling Sub-Sampling Sub-Sampling 24 30 48 30 ... guidelines in order to achieve the best possible surface nish Among the gures used to measure surface roughness, the most commonly used in the literature is roughness average (Ra) It is dened as the...

Ngày tải lên: 25/11/2016, 21:54