Orion Network Performance Monitor (Orion NPM) delivers comprehensive fault and network performance management that scales with rapid network growth and expands with your network monitoring needs, allowing you to collect and view availability and realtime and historical statistics directly from your web browser. While monitoring, collecting, and analyzing data from routers, switches, firewalls, servers, and any other SNMP-enabled devices, Orion NPM successfully offers you a simple-to-use, scalable network monitoring solution for IT professionals juggling any size network....
Since the seminal study of Leland, Taqqu, Willinger, and Wilson , which set the groundwork for considering self-similarity an important notion in the understanding of network traffic including the modeling and analysis of network performance, an explosion of work has ensued investigating the multifaceted nature of this phenomenon.
Establishing a network performance baseline requires collecting key performance data from the ports and devices that are essential to network operation.1 Gather symptoms - Troubleshooting begins with the process of gathering and documenting symptoms from the network, end systems, and users.
Stage 2 Isolate the problem - The problem is not truly isolated until a single problem, or a set of related problems, is identified.
Load balancing improves network performance by distributing traffic efficiently so that individual servers are not overwhelmed by sudden fluctuations in activity. Server Load Balancing is a guide to this critical component of high availability, clustering, and fault tolerance, all of which provide the infrastructure for reliable Internet sites and large corporate networks.
Network Operating Systems and Windows Server 2003-Based Networking
Discuss the functions and features of a network operating system
Define the requirements for a Windows Server 2003 network environment
Describe how Windows Server 2003 fits into an enterprise-wide network
Perform a simple Windows Server 2003 installation
Manage simple user, group, and rights parameters in Windows Server 2003
Understand how Windows Server 2003 integrates with other popular network operating systems
Upon completing this module, you will be able to:
Use the command-line interface to accurately determine network operational status and network performance
Manage operating system image files to maintain an accessible operating system file and according to best practices, given a network topology
Use Cisco IOS commands to manage device configuration files to reduce device downtime and according to best practices
Execute an add, move, or change so that the network functions in accordance with the new requirement, given a new network requirement...
As network operators add new capacity, technologies and equipment to their networks, they
often find themselves with older network elements that no longer meet their needs. Additionally,
as some operators grow through acquisition, they sometimes find themselves with duplicated
facilities that add unnecessary capital and operating expenditures. And other operators are faced
with asset disaggregation or divestiture as the result of changing business models.
Learning objectives of this chapter include: Identify the devices and protocols used in a small network; explain how a small network serves as the basis of larger networks; explain the need for basic security measures on network devices; identify security vulnerabilities and general mitigation techniques;...
Configure a router to propagate a default route in an EIGRP network, modify EIGRP interface settings to improve network performance, configure EIGRP authentication to ensure secure routing updates, explain the process and tools used to troubleshoot an EIGRP network, troubleshoot neighbor adjacency issues in an EIGRP network, troubleshoot missing route entries in an EIGRP routing table.
Networks, particularly large networks, are often divided into smaller subnetworks, or subnets. Subnets can improve network performance and control. A subnet address extends the network portion, and is created by borrowing bits from the original host portion and designating them as the subnet field,...
Mục đích của chương này là cung cấp cho chúng ta những khái niệm cơ bản nhất về giao thức quản lí mạng đơn giản SNMP, các thành phần, chức năng và phương thức hoạt động của giao thức.
Phần đầu chương giới thiệu tổng quan về SNMP, cấu trúc và đặc điểm cũng như hoạt động của giao thức này. Sau đó giới thiệu các phiên bản sau của SNMP và phân tích được những khác biệt của các phiên bản sau với phiên bản SNMP đầu tiên....
The Open Systems Interconnection (OSI) model is a reference tool for understanding data communications between any two networked systems. It divides the communications processes into seven layers. Each layer both performs specific functions to support the layers above it and offers services to the layers below it. The
three lowest layers focus on passing traffic through the network to an end system. The top four layers come into play in the end system to complete the process.
Limit network traffic to increase network performance. For example, if corporate policy does not allow video traffic on the network, ACLs that block video traffic could be configured and applied. This would greatly reduce the network load and increase network performance.
Provide traffic flow control. ACLs can restrict the delivery of routing updates. If updates are not required because of network conditions, bandwidth is preserved.
Provide a basic level of security for network access.
Your role as a Cisco Certified Design Associate is to be a network design consultant. You will act like
an architect, building comprehensive designs that solve your customer's internetworking problems and
provide the required functionality, performance, and scalability. In the same way that an architect
designs a building or house for a client, you will develop blueprints for an overall internetwork
design, as well as components plans for various pieces of the internetwork.
This volume contains the proceedings of the Seventh Mediterranean Ad Hoc
Networking Workshop (Med-Hoc-Net'2008), celebrated in Palma de Mallorca (llles
Balears, Spain) during June 25-27, 2008. This IFIP TC6 Workshop was organized by
the Universitat de les Illes Balears in cooperation with the Asociaci6n de Tdcnicos de
lnform~tica and sponsored by the following Working Groups: WG6.3 (Performance
of Computer Networks) and WG6.8 (Mobile and Wireless Communications).
Oracle Database Performance Tuning Guide is an aid for people responsible for the
operation, maintenance, and performance of Oracle. This book describes detailed
ways to enhance Oracle performance by writing and tuning SQL properly, using
performance tools, and optimizing instance performance. It also explains how to
create an initial database for good performance and includes performance-related
reference information. This book could be useful for database administrators,
application designers, and programmers.
Cisco Certified Network Associate (CCNA®) validates the ability to install, configure, operate, and troubleshoot medium-size route and switched networks, including implementation and verification of connections to remote sites in a WAN. CCNA curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills.
Managing a Microsoft Windows Network Environment, a five-day instructorled
course, provides the knowledge required by Microsoft® Certified System
Administrators (MCSAs). While Microsoft Certified System Engineers
(MCSEs) are qualified to design and plan, deploy, manage, and troubleshoot
complex Windows system and network environments in medium to large
organizations, Network Administrators and Technical Support specialists
perform more limited duties on a smaller scale, such as on the department
This book covers everything you need to know to pass the OCP: Oracle8i
Performance and Tuning and OCP: Oracle8i Network Administration
exams. The first part of the book covers the most critical areas of database
performance tuning and how to follow and implement Oracle’s recommended
tuning methodology. The second part covers the topics of network
administration including configuring the necessary client and server components
of an Oracle network and helps you develop an understanding of the
Oracle 8i Net8 architecture....