Deployments of voice over IP (VoIP) networks continue at a rapid pace.
Voice gateways are an essential part of VoIP networks, handling the
many tasks involved in translating between transmission formats and
protocols and acting as the interface between an IP telephony network
and the PSTN or PBX. Gatekeepers and IP-to-IP gateways help these
networks scale. Gatekeepers provide call admission control, call
routing, address resolution, and bandwidth management between H.323
endpoints including Cisco IOS voice gateways and Cisco Unified
CallManager clusters. IP-to-IP gateways allow VoIP calls to traverse
disparate IP networks.
The second edition of Cisco Voice Over IP (CVoice) provides readers with all the critical information needed to implement and support data and voice integration solutions at the network-access level. In addition, this book prepares the reader for the CVoice certification exam 642-432, which applies to multiple Cisco IP Telephony Specialist certifications and the Cisco Certified Voice Professional (CCVP) certification.
This book provides the first industry-oriented, comprehensive coverage
on DWDM network designs and engineering solutions. There is no one
source that explains the details of designing/building a DWDM network
from the ground up. DWDM Network Designs and Engineering Solutions is
an all-out practical approach that teaches the reader new technologies
and ways to plan, design and build their networks in a real time
environment. Each chapter begins familiarizing the reader with new
technologies and then helps implement the same in practical, real-world
case studies. This book enables network designers to tap the huge
bandwidth offered by the fiber to the fullest and makes the vision of
an Optical Internet come true.
- Best-practice QoS designs for protecting voice, video, and critical data while mitigating network denial-of-service attacks
- Understand the service-level requirements of voice, video, and data applications
- Examine strategic QoS best practices, including Scavenger-class QoS tactics for DoS/worm mitigation
- Learn about QoS tools and the various interdependencies and caveats of these tools that can impact design considerations
- Learn how to protect voice, video, and data traffic using various QoS mechanisms
- Evaluate design recommendations for protecting voice, video, and
multiple classes of data while mitigating DoS/worm attacks for the
following network infrastructure architectures: campus LAN, private
WAN, MPLS VPN, and IPSec VPN
Design and deploy high availability IP and MPLS network architectures with this comprehensive guide!
- Includes a detailed overview of the IP/MPLS forwarding and control plane protocols, including OSPF, IS-IS, LDP, BGP, and RSVP
- Analyze fault-tolerant IP/MPLS control plane architectures with the explanations in this book
- Develop a clear understanding of various high availability aspects of IP/MPLS networks
- Learn how to seamlessly deploy IP/MPLS control plane restart mechanisms
- Master the application of fault-tolerant control-plane architectures
in designing and deploying highly reliable and available MPLS
applications, such as traffic engineering, L2VPNs, and L3VPNs
- Understand the layered architecture of network-level fault recovery
mechanisms, such as optical, SONET, MPLS, and interactions between
different layers
Learn about the technologies that drive fast broadband access in the
first mile and master the design of first mile access networks
- Understand the motivating forces behind first mile access networks
and learn about the technology and business requirements for first mile
access solutions
- Master the design of passive optical networks (PON)
- Build EPON solutions and differentiate them from BPON and GPON
- Enhance bandwidth capacity in the access area using CWDM technology
- Learn about and design DSL and power-line communication (PLC) networks
- Discover the use of WiFi in the first mile and study the subsystems involved in a WiFi solution
- Learn the importance of management in first mile access networks and
create a business case for diverse first mile access networks
As a network administrator, auditor or architect, you know the
importance of securing your network and finding security solutions you
can implement quickly. This succinct book departs from other security
literature by focusing exclusively on ways to secure Cisco routers,
rather than the entire network. The rational is simple: If the router
protecting a network is exposed to hackers, then so is the network
behind it. Hardening Cisco Routers is a reference for protecting the
protectors. Included are the following topics:
- The importance of router security and where routers fit into an overall security plan
- Different router configurations for various versions of Cisco's IOS
- Standard ways to access a Cisco router and the security implications of each
- Password and privilege levels in Cisco routers
- Authentication, Authorization, and Accounting (AAA) control
- Router warning banner use (as recommended by the FBI)
- Unnecessary protocols and services commonly run on Cisco routers
- SNMP security
- Anti-spoofing
- Protocol security for RIP, OSPF, EIGRP, NTP, and BGP
- Logging violations
- Incident response
- Physical security
Design, build, and operate integrated gateway routing systems - Learn how to design, build, and administer integrated gateway routing systems - Identify the advantages and disadvantages of Cisco/UNIX integrated designs - Review lab exercises throughout the book that bring concepts to life - Encounter the fascinating world of dynamic UNIX routing and TCP/IP stacks - Understand the way forwarding and signaling are implemented in the UNIX world - Gain proficiency with tunnels and VPNs - Utilize advanced features such as high availability, NAT, bandwidth management, policy routing, and multicast architectures - Explore Linux and BSD networking concepts
IP multicast is rapidly coming of age: its principles are solid, its protocols are being finalized, and it is increasingly being implemented in real-world ISP and enterprise networks. Now, a team of Juniper Networks IP multicast experts have written the most authoritative and up-to-date guide to IP multicast implementation.
A straightforward, graphic-based reference book for selecting and implementing Internet phone services, based on VoIP.
- A four-color, simplified approach to learning about Voice over IP (VoIP) and how it applies to Internet phone services
- Learn how to integrate Internet phone services into the home,
subscribe to a service, install equipment, and troubleshoot issues that
may arise
- Another release from the best-selling "Simplified" series from Cisco Press
Here's an authoritative guide to stable, large-scale Internet routing with BGP-4: network design, Cisco IOS configuration, Classless Interdomain Routing (CIDR), redundancy, traffic balancing, symmetry, and more. This book gives you the information you evaluate the networks of competing Internet Service Providers, make intelligent Internet routing decisions, and implement them.
- An introduction to designing and configuring Cisco IPsec VPNs
- Understand the basics of the IPsec protocol and learn implementation best practices
- Study up-to-date IPsec design, incorporating current Cisco innovations in the security and VPN marketplace
- Learn how to avoid common pitfalls related to IPsec deployment
Эта книга позволяет достичь полного понимания технологий Cisco, чаще
всего применяемых в сетях основных типов. Без этого невозможно
выполнять настройку конфигурации, проектировать и устранять нарушения в
работе сетей самых различных типов, созданных на основе продуктов
Cisco. В ней подробно рассматриваются протоколы локальной и
распределенной сети, а также наборы протоколов общего назначения, в том
числе TCP/IP. В книге дано описание большинства существующих в
настоящее время сетевых продуктов Cisco и приведены справочные таблицы
с краткими сведениями о характеристиках устройств. Описаны технологии
коммутации Cisco, применяемые в локальной сети, раскрыты такие темы,
как настройка конфигурации виртуальной локальной сети, применение
алгоритма STP и метода MLS, принципы организации очередей и средства
коммутации SLB. Рассматриваются все главные внутренние маршрутизирующие
протоколы, включая RIP, EIGRP и OSPF. Представлены 540 команд IOS,
применяемых почти на любом устройстве Cisco.
A complete guide to understanding, designing, and deploying Layer 2 VPN technologies and pseudowire emulation applications:
- Evaluate market drivers for Layer 2 VPNs
- Understand the architectural frame-work and choices for Layer 2 VPNs, including AToM and L2TPv3
- Grasp the essentials of Layer 2 LAN and WAN technologies
- Examine the theoretical and operational details of MPLS and LDP as they pertain to AToM
- Understand the theoretical and operational details of Layer 2 protocols over L2TPv3 in IP networks
- Learn about Layer 2 VPN bridged and routed interworking and Layer 2 local switching
- Understand the operation and application of Virtual Private LAN Services (VPLS)
- Learn about foundation and advanced AToM and L2TPv3 topics through an extensive collection of c
The definitive guide to enterprise and carrier metro Ethernet applications:
- Easy to read and understand, following the style of the best-selling Internet Routing Architectures
- Understand emerging metro Ethernet services such as point-to-point
packet-leased line services and multipoint-to-multipoint VPLS
- Learn to scale your Ethernet LAN beyond the enterprise wall and across a geographically dispersed virtual private campus
- Understand the drivers and the challenges that carriers face in transforming the metro to address data services
- Understand the different metro deployment models using SONET/SDH,
next-generation SONET/SDH, Ethernet over SONET/SDH (EOS), virtual
concatenation, Generic Framing Protocol (GFP), and Resilient Packet
Ring (RPR)
- Examine the VPLS model and how MPLS can extend an L2 service across the MAN and the WAN
- Learn about the characteristics of a GMPLS architecture
Network managers often question the value that MPLS brings to their
business environment. This book provides them with a precise guide for
evaluating the benefits of MPLS-based applications and solutions. The
book guides the network manager through the business case for MPLS by
exploring other technology alternatives, including their applications,
benefits, and deficiencies. Understanding the service creation process
as the basis for MPLS-based solutions is pivotal when describing the
benefits that MPLS offers. Furthermore, the book explores MPLS
technology and its components, providing an overview of the
architecture necessary to reap the true advantages that MPLS brings to
a service provider or enterprise network.
MPLS is moving rapidly from standards bodies to interoperability labs
to real-world enterprise, service provider, and carrier environments.
The growing buzz over optical IP positions MPLS as a "holy grail"
technology for finally unifying network configuration, management, and
real-time provisioning. Even now, real organizations are saving money
and maximizing flexibility with MPLS-based VPNs. Want to know how to
make MPLS work for you? Then you want MPLS and VPN Architectures.
A comprehensive guide to implementing QoS in IP/MPLS networks using Cisco IOS and Cisco IOS XR Software.
- Understand IP QoS architectures and how they apply to MPLS - Take a detailed look at traffic management using policing, shaping, scheduling, and active queue management - Study Cisco QoS behavioral model and the modular QoS command-line interface (MQC) - Learn the operation of MPLS TE with its DiffServ extensions and applicability as a traffic-protection alternative - Find multiple configuration and verification examples illustrating the implementation of MPLS TE, DS-TE, and FRR - Review the different designs, ranging from a best-effort backbone to the most elaborate scenarios combining DiffServ, DS-TE, and FRR
As the Internet continues to grow exponentially, the need for network engineers to build, maintain, and troubleshoot the growing number of component networks has also increased significantly. IP routing is at the core of Internet technology and expedient troubleshooting of IP routing failures is key to reducing network downtime and crucial for sustaining mission-critical applications carried over the Internet. Though troubleshooting skills are in great demand, few networking professionals possess the knowledge to identify and rectify networking problems quickly and efficiently.
Installing and operating a Wi-Fi hotspot allows you to attract customers and differentiate your business. Deploying even a small wireless network has proven to be a difficult task for the average consumer, however. With this book as your guide, you can painlessly figure out the requirements for your Wi-Fi hotspot, how to properly set it up, how to operate it, and how to optimize it for the needs and security of your customers.
В книге приведены основные сведения о беспроводных компьютерных сетях, их компонентах и технологиях. Рассмотрены все разновидности беспроводных сетей - персональные, локальные, региональные и глобальные, рассказано об особенностях их структур, компонентов и методах применения. Особое внимание уделено вопросам безопасности беспроводных сетей, описаны механизмы аутентификации и шифрования.
Книга предназначена для тех, кто лишь приступает к изучению беспроводных сетей. От читателей не требуется какой-либо технической подготовки. Руководители компаний, менеджеры и бизнесмены, инженеры и техники, рядовые пользователи, желающие разобраться в том, как устроены беспроводные сети - все получат пользу от прочтения этой книги.
Эта книга, написанная специалистами-практиками, посвящена изучению основ конфигурирования операционной системы IOS, под управлением которой работают все устройства межсетевого взаимодействия компании Cisco Systems, Inc. Материал подается на примере типовой сети вымышленной компании ZIP. Книга будет полезна специалистам, работающим в области сетевых технологий, которые впервые решают задачу построения работоспособной сети, использующей мосты, коммутаторы и маршрутизаторы компании Cisco.
Данная книга содержит важную для практического применения информацию об операционной системе маршрутизаторов Cisco - Internetwork Operating System (IOS). Программное обеспечение IOS предоставляет средства, с помощью которых сетевые профессионалы конфигурируют устройства Cisco и управляют ими. Понимание структуры команд Cisco IOS, а также осмысление того, что происходит внутри маршрутизатора, поможет вам как дизайнеру или администратору сети выполнять свою работу более эффективно. Знание внутренних принципов работы операционной системы IOS поможет вам учитывать тонкости аппаратной структуры необходимых устройств в процессе разработки сети, а также облегчит поиск и устранение неисправностей в будущем. В данной книге изложена вся необходимая информация о внутренней структуре ОС IOS.
Эта книга начинается с обзора основных концепций операционных систем и рассмотрения инфраструктуры ОС IOS: процессов, управления памятью, планировщика задач, буферов пакетов и драйверов устройств. Затем более подробнорассматриваются различные аппаратно-зависимые методы коммутации: программная коммутация, быстрая коммутация, оптимальная коммутация и протокол Cisco Express Forwarding (CEF). Вы также познакомитесь с особенностями аппаратной реализации и принципов работыразличных платформ, а именно устройств серий 1600, 2500, 4x00, 3600, 7200, 7500 и маршрутизаторов серии Cisco GSR. Завершает книгу описание технологий QoS, а также информация о различных методах реализации качества обслуживания: приоритетная очередность, взвешенная справедливая очередность, метод настраиваемой очереди и механизм циклически изменяемого дефицита.
