Cisco CSS11501 - 100Mbps Ethernet Load Balancing Device Ficha de datos - Página 2
Navegue en línea o descargue pdf Ficha de datos para Hardware de red Cisco CSS11501 - 100Mbps Ethernet Load Balancing Device. Cisco CSS11501 - 100Mbps Ethernet Load Balancing Device 10 páginas. Css 11500 series
También para Cisco CSS11501 - 100Mbps Ethernet Load Balancing Device: Boletín de asistencia sobre productos (3 páginas), Ficha de datos (10 páginas)
Imprimir página
Scalable Distributed Architecture for Today and Tomorrow
In a typical deployment, the Cisco CSS 11500 intercepts a request from a client browser, characterizes the flow by
reading Hypertext Transfer Protocol (HTTP) headers, selects a destination server based on resource availability, and
forwards the flow. Because it quickly processes the entire HTTP header (full URL, cookie, extensive resource
verification information), the Cisco CSS 11500 knows who the user is, what the user wants to do, and how best to
service the user's request within a global Web infrastructure.
The Cisco CSS 11500 provides a fully distributed architecture—all modules in the system contribute to the overall
processing and memory needs for policy-based flow setup and flow forwarding. In this way, performance scales
linearly as modules are added, and heavy traffic that hits one module can be balanced to others within a single system.
So the Cisco CSS 11500 balances traffic not only within a data center but also across its own internal modules.
This innovative architecture addresses the primary limitations of PC- and application-specific integrated circuit
(ASIC)-based solutions. Unlike PC-based systems, the network processors of the Cisco CSS 11500 provide ample
packet processing power and bandwidth, avoiding the bottlenecks of the PC bus and a single central processor. And
unlike ASIC-based platforms, the powerful, yet adaptable processors of the Cisco CSS 11500 enable easy integration
of new software features.
The Cisco CSS 11500 can apply all its processing power to any port at any time, and it can grow with changing
feature and scalability requirements. The system is designed to readily adapt to changing e-business needs—without
complex and costly hardware upgrades.
New Standard in High Availability
The Cisco CSS 11500 delivers ASR—the industry's first stateful Layer 5 session redundancy feature that enables
failover of important flows while maximizing performance.
Some flows—such as a long-lived File Transfer Protocol (FTP) or a database session—may be mission critical, but
many flows are not. Most solutions on the market today require all traffic—important or not—to be backed up from
one box to another. If the majority of flows are not critical, then most of system performance is wasted on
unnecessary back ups.
With ASR, the Cisco CSS 11500 may be configured so critical flows are marked as replication worthy, whereas others
do not need to be so marked. ASR focuses traffic management resources precisely where needed.
SSL Integration for Security and Performance
Cisco offers the most scalable integrated SSL solutions of any Layer 4–7 switches.
SSL, the industry standard for secure transport of traffic from client browsers to Web servers, presents two key
challenges for today's e-business infrastructure. First, because SSL encrypts data and headers, it obscures the
request-specific information that Layer 4–7 switching decisions are made on. Second, SSL authentication places a
high processing load for each SSL flow setup.
The Cisco CSS 11500 with integrated SSL modules meets both of these challenges by combining leading SSL
acceleration technology with the Cisco WebNS technology. In addition to superior price performance, the SSL
module simplifies the management of digital certificates and offers new possibilities in optimizing the switch-to-server
architecture for security and performance. And SSL transaction performance may be scaled by adding multiple SSL
modules to a chassis.
Cisco Systems, Inc.
All contents are Copyright © 1992–2002 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
Page 2 of 10