Tuesday, May 31, 2005

CE-550 Cisco cache engine / proxy server

cisco ce-550

Cisco's next-generation Cache Engine 500 series solutions enable ISPs and enterprises to reduce WAN bandwidth usage, accelerate network performance, and increase network scalability.

The Cisco network caching solution is architected and optimized to work as a single caching system, combining: Cache-aware internetworking equipment running Cisco IOS software's industry-leading Web Cache Communication Protocol (WCCP) and Network-integrated Cache Engine 500 series products that are managed and designed like networking products and adapt to the network.Utilizing the intelligence of the network, the Cisco Cache Engine 500 series solutions localize traffic patterns by transparently caching frequently accessed content and then locally fulfilling successive requests for the same content. Because they are integrated into the network infrastructure, they have a low cost of ownership, enabling ISPs and enterprises to cost-effectively deploy the Cisco network caching solution on a wide-scale ...

Packeteer - Packetshapper 1500

packetshaper 1500

Small branch offices are particularly vulnerable to poor application performance. Business-critical applications compete with less urgent traffic for limited bandwidth on small WAN-access links. All it takes is one employee who synchronizes a laptop with the message server, and the small office's WAN link is clogged for 15 minutes, leaving applications such as Oracle or SAP floundering. PacketShaper is the solution.

PacketShaper is the bandwidth-management solution that brings predictable, efficient performance to applications running over enterprise wide-area networks (WANs) and the Internet. The PacketShaper 1500 Series is the platform designed to manage application performance for branch offices and remote sites. With PacketShaper, you can control performance to suit applications' characteristics, business' requirements, and users' needs. Then you can validate the results.

Delivering Control at the Branch

PacketShaper offers a four-step process to manage application performance: it detects and classifies network applications, analyzes network behavior, enforces policy-based bandwidth allocation, and reports on application performance.
Step One: PacketShaper automatically classifies network traffic into categories based on application, protocol, subnet, URL, and other criteria-yielding thousands of potential categories. PacketShaper goes beyond static port-matching and IP address schemes. It even classifies on the basis of layer-7 information of the OSI networking model.

Step Two: PacketShaper provides detailed analysis of application performance and network efficiency, describing peak and average bandwidth utilization, response times divided into network and server delays, top users, top web pages, top applications, and more.

Step Three: With policy-based bandwidth allocation and traffic shaping, PacketShaper protects critical applications, paces those that are less urgent, and optimizes performance of a limited WAN-access link. You specify bandwidth minimums and/or maximums on a per-session or per-application basis. PacketShaper's TCP Rate Control technology proactively prevents congestion on both inbound and outbound flows, eliminates unnecessary packet discards and retransmissions, and forces a smooth, even flow rate that maximizes throughput.

Step Four: PacketShaper's extensive reporting capabilities (reports, graphs, statistics, and SNMP MIBs) allow you to base planning activities on concrete numbers and to assess the impact of configuration changes. With service-level agreements, you can define performance standards, compare actual performance with service-level goals, and generate reports on compliance.

Match your PacketShaper to your Network

The PacketShaper 1500 Series manages application performance at offices with WAN links up to T1/E1. There are four 1500 options: a monitor-only option with no control features; an option to control a WAN link up to 128 Kbps; an option to control a WAN link up to 512 Kbps; and an option to control a WAN link up to 2 Mbps. PacketShaper is installed on the LAN segment that connects to the WAN router and supports 10/100 Mbps Ethernet LAN interfaces.

PacketShaper integrates smoothly with existing networks and requires no new protocols, router reconfiguration, topology changes, or desktop changes. Installation is simple-just plug in two cables and fill in a web-based questionnaire. PacketShaper is not a point of network failure; if PacketShaper goes down or is turned off, it acts just like a piece of cable. An easy web-based interface brings PacketShaper to any web browser with a password.

As soon as it's installed, PacketShaper automatically identifies your network traffic and measures response times. PacketShaper's suggested policies complement automatic application discovery to provide out-of-the-box policy-based management strategies. PacketShaper tells you what's on your network, makes applications perform as they should, translates network and application behavior into intuitive reports, and does it all without imposing undue overhead.

Friday, May 27, 2005

The Cisco 1700 series


The Cisco 1700 Series Modular Access Router delivers fast, reliable, and secure Internet and network access through various high-speed WAN access technologies. The Cisco 1700 Series offers a comprehensive suite of integrated security capabilities with wire-speed IP Security VPN, stateful firewall protection, and intrusion detection.

It also offers a migration path to voice-over-IP and IP telephony services through a converged data and voice network that offers call processing and QoS services.

Ideal for enterprise branch offices and small and medium-sized businesses, the Cisco 1700 Series modular design provides the flexibility to meet demanding and evolving business requirements by offering high-speed broadband and leased-line access, comprehensive security, and multiservice data and voice integration.

Oracle magazine Free Subscription

oracle magazine
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Thursday, May 26, 2005

Nokia Unveils Handheld Internet Tablet

nokia linux tablet

NEW YORK - Nokia Corp. is introducing a handheld tablet for Web-browsing over a wireless broadband connection, the company's first non-phone mobile device and the latest in a long line of attempts to create a so-called "Internet appliance" for quick online access around the home

The new Internet Tablet, unveiled Wednesday and slated to go on sale this summer, is based on the open-source Linux operating system rather than the Symbian platform Nokia uses for "smart" cell phones.

Priced at $350, the Internet Tablet is being positioned as an alternative to buying an extra personal computer or laptop for different rooms, providing a cheaper, quicker and less-cumbersome way to connect to the Web and e-mail at home.

There's no hard drive but rather 128 megabytes of onboard flash memory and a memory card slot. Nokia says the device is not intended as a rival to Apple Computer Inc.'s iPod or other MP3 music players. A software update is expected early next year to add features such as voice-over-Internet telephony and instant messaging.

While fairly unique in terms of its handheld size, the Internet Tablet can be seen as another variation on a concept that has repeatedly failed to catch on — a device that offers easy Internet access and basic tasks such as e-mail for which the computing power of a full-blown PC is unnecessary.

During the Internet bubble, prominent names from a wide range of technology industries dabbled with Web appliances. Intel Corp., Gateway Inc., 3Com Corp., America Online, National Semiconductor Corp. and Honeywell all either launched or promised such devices. Nokia itself weighed in with a tablet called the MediaScreen.

Many were wired devices, such as the "Audrey" from 3Com, though a few like the Airboard from Sony Corp (SNE.N). and the WebPAD developed by National Semi used wireless technologies similar to Wi-Fi.

Since the Nokia tablet is meant to be carried from room to room, its 4.1-inch screen is considerably smaller than the display on most of these predecessor appliances but also far bigger and sharper compared with most cell phones and handheld computers.

And rather than serving up stripped-down versions of Web pages like most mobile devices, the tablet uses an Opera browser to display sites as they'd appear on any computer.

Weighing half a pound, the Internet Tablet is three-quarters of an inch thick, 5.6 inches wide and 3.1 inches deep. It includes a loudspeaker but there's no typewriter keyboard for thumb-typing e-mail as on popular handheld computers such as the Treo and BlackBerry. Instead, the tablet comes with a stylus to tap a virtual keyboard on the screen.

The device is designed primarily to use at home, though its Wi-Fi transmitter can also connect with public and commercial hot spots. There's also a USB port to connect with a PC and a Bluetooth transmitter that can be used to connect with a mobile phone that has cellular online access.

The Nokia announcement marks the second time in days that a prominent producer of mobile devices has veered into a new product category.

Last week, PalmOne. Inc. unveiled a $500 device called the LifeDrive, essentially a cross between a mobile media player, portable hard drive and an organizer. The LifeDrive features 4 gigabytes of internal storage and a high-resolution screen for on-the-road access to music, video, digital photos, e-mail and office documents. It also offers Wi-Fi wireless capability to connect with the Web and corporate networks remotely.

But no matter how well the new Nokia and Palm devices may be designed, new product concepts founder more often than not.

Nokia in particular has struggled in its attempts to forge several new product categories. Most prominent among these has been the N-Gage, a cell phone designed specifically for video games. Others include a digital picture frame with a cellular connection to download photos.

Sales of the N-Gage, shaped more like a portable game player than a phone, have been weak since it was first introduced in late 2003. But Nokia has stood by the concept, introducing updated versions of the device and maintaining an "N-Gage Arena" wireless community for multiplayer games and forums.

Tuesday, May 10, 2005

Travel News - Up Today!


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Wednesday, May 04, 2005

Pigtail for wireless


Pig-tail [radio hams] A short piece of cable with two
connectors on each end for converting between one connector type and
another. Common pig-tails are 9-to-25-pin serial-port converters
and cables to connect PCMCIA network cards to an RJ-45 network cable.

Wireless Lan Access Point

ap client

Hi Performance Wireless Lan Access Point / Client / Repeater, IEEE 802.11g/b Compatible 54Mbps. Easy to use web base configuration.

Tuesday, May 03, 2005

DX Line Amplifier


DX Line Amplifier
Product Description

ELA-20 Line Amplifier

Frequency Range:900~2050 MHz

Gain:20 dB ±3dB

Input Level:-45 ~-65dBm

DC Powered Through Output Connector

Connectors:75 ohm F Type Female

Power:+12 ~+24 VDC (80 mA)

Size:L 2.87 W 1.87 H .68 in.