2011年5月26日星期四

Cisco 2811, Hot List in Cisco 2800 Series Integrated Services Routers. Cisco 2800 Series, for Small to Large Offices


The used Cisco 2800 Series routers, ideal for small to medium-sized businesses and enterprise branch offices, offer secure, wire-speed delivery of concurrent data, voice, and video services; offer features such as hardware-based VPN encryption acceleration, intrusion-protection and firewall functions, and optional integrated call processing and voice mail; offera wide variety of network modules and interfaces, voice digital signal processor (DSP) slots, high-density interfaces for a wide range of connectivity requirements, and sufficient performance and slot density for future network expansion requirements and advanced applications.

The Cisco 2800 Series comprises four platforms:Cisco 2801,Cisco 2811,Cisco 2821, and Cisco 2851.Cisco 2801and Cisco 2811are one rack unit in height and have two 10/100 LAN ports. The more powerful Cisco 2821 routers and Cisco 2851 routers are two rack units in height and have two 10/100/1000 LAN ports.

The higher-end router platforms of the Cisco 2800 series offer increased performance, increased slot density including network module slots ad extension voice module slots and increased inline power output.

Better serve for small to large business, Cisco 2800 series owns several hot models among Cisco users, such as Cisco 2811, Cisco2821, and Cisco2851, especially Cisco 2811 routers, very popular by google search. So let’s check some details of Cisco 2811 router:
The Cisco 2811 Integrated Services Router provides the following support:
•Wire-speed performance for concurrent services such as security and voice , and advanced services to multiple T1/E1/xDSL WAN rates
•Enhanced investment protection through increased performance and modularity
•Increased density through High-Speed WAN Interface Card Slots (four)
•Enhanced Network Module Slot
•Support for over 90 existing and new modules
•Support for majority of existing AIMs, NMs, WICs, VWICs, and VICs
•Two Integrated 10/100 Fast Ethernet ports
•Optional Layer 2 switching support with Power over Ethernet (PoE) (as an option)
Security
◦On-board encryption
◦Support of up to 1500 VPN tunnels with the AIM-EPII-PLUS Module
◦Antivirus defense support through Network Admission Control (NAC)
◦Intrusion Prevention as well as stateful Cisco IOS Firewall support and many more essential security features
•Voice
◦Analog and digital voice call support
◦Optional voice mail support
◦Optional support for Cisco CallManager Express (Cisco CME) for local call processing in stand alone business for up to36 IP Phones
◦Optional support for Survivable Remote Site Telephony support for local call processing in small enterprise branch offices for up to 36 IP phones

Cisco 2811’s price info at RouterSwitch.com:
Conditions: New Sealed
List price:  US$2,495.00
Wholesale Price: US$1,048.00
You Save:  US$1,447.00 (58.00% OFF)

2011年5月19日星期四

Cisco Linksys E4200 wireless router

cisco router  Linksys E4200 router is aimed at advanced users, but we nevertheless found it easy to set up and use.

It uses the fastest 802.11n wireless network standard and can work in both the normal 2.4GHz wireless frequency and the less-congested 5GHz frequency simultaneously to improve your in-home signal.

Computers with suitable equipment can connect at even faster speeds but only Intel Ultimate Wifi Link adapters support this at present (see the end of this review for a list of laptops with the adapters built-in).

The two-tone case is discreet: the antennas are housed inside so nothing pokes out, the only part at the front is a white-illuminated logo to indicate status, and even the lights on the four rear network ports can be turned off. It's intended for cable internet users or those with a separate broadband modem with a network socket, so ADSL users will have to use it alongside their existing modems or routers.

It includes the excellent cisco871 Connect software that made setup and configuration easy and provided quick access to the main features. The router can also be used without this software by accessing its configuration pages in a web browser. Previous versions of this program had some annoying quirks but these have now all been fixed.

Running Cisco Connect launches an illustrated wizard that shows users how to plug in the router, and then automatically discovers and configures it. This only took a few minutes, and it worked equally well over wireless or a network cable. Even complete novices should have no trouble getting up and running.

When setup had finished the Cisco Connect main screen let us add computers, printers and other devices to the network. For PCs, an Easy Setup Key containing the router's wireless security details can be created on a USB memory key. Each connected PC can then be assigned parental controls, restricting the times of web access or blocking specific websites.

Another useful feature is the guest wireless network, a separate network that is perfect for allowing visiting friends or family to use the internet while keeping your PCs secure.

There is also a link to the advanced settings that open in a web browser and allow advanced users to configure features such as the USB storage. Any USB disk or memory key can be plugged into the router's USB socket and shared over the network or the internet, but setting this up was not easy and it's a shame it wasn't included in the  cisco 871 Connect software. Disappointingly, you cannot plug a printer or webcam into the USB socket and have it shared.

The E4200 is an expensive router but the fast networking, parental controls and USB sharing are worth paying for.

2011年5月16日星期一

Cisco's Struggles Continue: Tech Weekly

REDMOND, Wash. (TheStreet) -- Cisco router (CSCO_) was, once again, the big story of the week after it reported underwhelming third-quarter numbers following market close Wednesday. Despite beating earnings estimates, Cisco delivered a weak outlook for a third consecutive quarter, and saw its shares tank. c3kx-nm-10g=

Cisco also provided additional details of its restructuring plan on its conference call. The company said it plans to implement a headcount reduction this summer and that it's targeting $1 billion in cost reductions by the end of fiscal year 2012. cat 4500 e -series 3-slot chassis fan

The tech giant's switch sales were down 9% year over year, as rivals such as HP(HPQ_) and Juniper(JNPR_) increasingly target its customers.

The public sector also remains a major area of weakness for Cisco,c3kx-nm-1g= although the company's routing and services businesses were robust.

Cisco is taking its long-term growth rate target of 12% to 17% off the table, according to CEO John Chambers, who warned that the company needs to become much more agile. "We have to move faster," c3kx-nm-1g he said. "It's my responsibility, the buck stops here -- I get it."