Network Switch

Nick Dinic asked:




SMS messaging, or Short Message Service, gives you the ability to use a high performance, un-congested international network to send your messages with premium routing and optimized relay path, and an up time greater than 99.9%, through an SMS gateway.

Through software that utilizes Bulk SMS, Email SMS, Web SMS and API, you can use a SMS gateway for quality delivery and reliability that has thousands of users worldwide. It gives you the ability to send and receive SMS text messages through your computer.

How SMS messaging works:

SMS or Short Message Service is a communication service which is a text message up to 160 characters long, no matter what method is used. Typically used on mobile telephone handsets, utilizing the GSM, it is now available on a wide range of networks, including 3G, and can be used with VOIP systems, and from your desktop computer.

What An SMS Gateway is:

A SMS gateway provider facilitates the SMS traffic between subscribers, acting as the server or network hub for the individual messages, much like a service provider for internet or websites. The SMS Gateway provides the path so that the SMS messages can be sent directly to and from recipients, avoiding delays and message loss, through optimized routing, and is frequently used corporately for communications.

How You Can Send Bulk SMS Messages From Your Email:

It is easy to send bulk SMS messages from your computer utilizing Email programs like Microsoft Outlook or others by utilizing the high volume, SMS traffic IP SMS gateway, which can connect directly to the SMS center of SMS service providers. API’s that allow developers of software to receive and send a large amount of messages from their email programs is provided by most IP SMS gateways.

How Companies Can Increase Sales and Customer Loyalty Using SMS

It is easy to reach your customer base by sending bulk SMS reminders or confirmations using your computer, and the SMS can be sent to the recipients in the network. It’s an easy way to stay in touch and keep your customers informed of sales, discounts and special promotions.

Redoxygen has been in business for over 8 years and has over 200,000 users globally. They have quality service and support, full version software with complete privacy and no spam. You can try their free, no-obligation SMS service through their trial offer that gives you 25 SMS credits free, or you can contact their sales department for larger corporate free trial programs. It’s easy to see how their SMS gateway can work for you; all they need is your name, email address and cell phone to set up your free trial account.

Some of the biggest corporate giants are already clients, like McDonalds, CHASE, Frito Lay, Deloitte, Lilly, USAID and AT.

These companies have been able to increase their customer loyalty as well as make their operations more efficient simply by using SMS in unconventional ways. Now, instead of sending an email or using the phone, short requests and promotional offers, as well as schedules and scheduled meetings are all delivered using an SMS.

Spend a few minutes and think how you can increase your sale, increase you customer loyalty and reduce operating costs by using SMS to deliver the important messages to their pocket - instantly.

Harris Andrea asked:




The Cisco ASA 5500 is the new Cisco firewall model series which followed the successful Cisco PIX firewall appliance. Cisco calls the ASA 5500 a “security appliance” instead of just a “hardware firewall”, because the ASA is not just a firewall. This device combines several security functionalities, such as Intrusion Detection, Intrusion Prevention, Content Inspection, Botnet Inspection, in addition to the firewall functionality.

However, the core ASA functionality is to work as a high performance firewall. All the other security features are just complimentary services on top of the firewall functionality. Having said that, the purpose of a network firewall is to protect computer and IT resources from malicious sources by blocking and controlling traffic flow. The Cisco ASA firewall achieves this traffic control using Access Control Lists (ACL).

An ACL is a list of rules with permit or deny statements. Basically an Access Control List enforces the security policy on the network. The ACL (list of policy rules) is then applied to a firewall interface, either on the inbound or on the outbound traffic direction. If the ACL is applied on the inbound traffic direction (in), then the ACL is applied to traffic entering a firewall interface. The opposite happens for ACL applied to the outbound (out) direction.

The ACL permit or deny statements basically consist of source and destination IP addresses and ports. A permit ACL statement allows the specified source IP address/network to access the specified destination IP address/network. The opposite happens for deny ACL statements. At the end of the ACL, the firewall inserts by default an implicit DENY ALL statement rule which is not visible in the configuration.

Enough theory so far. Let us see some examples below to clarify what we have said above.

The basic command format of the Access Control List is the following:

ciscoasa(config)# access-list “access_list_name” extended {deny | permit} protocol “source_address” “mask” [source_port] “dest_address” “mask” [ dest_port]

To apply the ACL on a specific interface use the access-group command as below:

ciscoasa(config)# access-group “access_list_name” [in|out] interface “interface_name”

Example1:

Allow only http traffic from inside network 10.0.0.0/24 to outside internet

ciscoasa(config)# access-list HTTP-ONLY extended permit tcp 10.0.0.0 255.255.255.0 any eq 80

ciscoasa(config)# access-group HTTP-ONLY in interface inside

The name “HTTP-ONLY” is the Access Control List itself, which in our example contains only one permit rule statement. Remember that there is an implicit DENY ALL rule at the end of the ACL which is not shown by default.

Example2:

Deny telnet traffic from host 10.1.1.1 to host 10.2.2.2 and allow everything else.

ciscoasa(config)# access-list DENY-TELNET extended deny tcp host 10.1.1.1 host 10.2.2.2 eq 23

ciscoasa(config)# access-list DENY-TELNET extended permit ip host 10.1.1.1 host 10.2.2.2

ciscoasa(config)# access-group DENY-TELNET in interface inside

The above example ACL (DENY-TELNET) contains two rule statements, one deny and one permit. As we mentioned above, the “access-group” command applies the ACL to an interface (either to an inbound or to an outbound direction).

Example3:

The example below will deny ALL TCP traffic from our internal network 192.168.1.0/24 towards the external network 200.1.1.0/24. Also, it will deny HTTP traffic (port 80) from our internal network to the external host 210.1.1.1. All other traffic will be permitted from inside.

ciscoasa(config)# access-list INSIDE_IN extended deny tcp 192.168.1.0 255.255.255.0 200.1.1.0 255.255.255.0

ciscoasa(config)# access-list INSIDE_IN extended deny tcp 192.168.1.0 255.255.255.0 host 210.1.1.1 eq 80

ciscoasa(config)# access-list INSIDE_IN extended permit ip any any

ciscoasa(config)# access-group INSIDE_IN in interface inside

stephenmorphey asked:




An Ethernet cable is what we use for connecting multiple computers physically through a designated cable. Generally a Category 5 cable or category 4 cable is used for directly connecting two computers for data sharing. Local Area Network can also be set up by using multiple Ethernet cables for connecting member nodes.

Ethernet crossover cable is also used to connect multiple computing devices together for high speed data transfer and network sharing. A network switch or hub is required for managing the input and output signals in such Ethernet networks. A common Ethernet cable technology follows IEEE standards supporting all official Ethernet media types.

Wired internet connection is generally supplied to computer terminals through Ethernet cables that are connected to long distance fiber optic network. High speed transfer and greater bandwidth utilization is possible with Ethernet cables due to their structural configuration.

Gigabit is the worldwide leader in Ethernet crossover cable market. Ethernet cables are primarily used in fields where model switches and hubs are essential.

Technically speaking, there are eight pins in a single Ethernet crossover cable plug. Color of individual wire is pre-determined to facilitate easy connection. A Cat 5 cable is generally used for setting up a 1000BASE-T Gigabit Ethernet. Enhanced version of a common Cat 5 cable is also available today as Category 5e. Technical specification for far end crosstalk has been added to Cat 5e cables which make them more versatile and useful than traditional Cat 5 Ethernet cables.

Other major Ethernet cables include Category 4, 6 and 7 cables which are used for specialized networking-related solutions. A common Belkin ten feet Ethernet cable can be brought for about $10. Generally a ten feet Ethernet cable is sufficient to connect to local computers to share data with high speed transmission.

For more information about buying ethernet splitter on the web. http://www.zoombits.co.uk/cables/ which has a huge range of options available, you can easily find ethernet adapter and other HDMI products you’re looking for.

Wes Fernley asked:


Copyright (c) 2008 Wes Fernley

In our previous article entitled “IP Cameras vs. CCTV Cameras - Part One,” we discuss the advantages of Remote Viewing, Recording to Remote Locations, Wireless Functionality and Motion Detection with Video Analytics. This second article will discuss other advantages that IP cameras have over traditional CCTV cameras.

Compatibility

Most IP camera recording software supports a wide range of IP camera models and manufacturers. This allows you to mix and match IP cameras in your installation to create a custom surveillance solution that fits perfectly for you.

Let’s say you wanted to setup three IP surveillance cameras, one viewing a parking lot, one watching your front lobby and another monitoring the rear entrance of your building. You could put three different IP camera models - even manufacturers - in this installation. You could go with an IQEye 755 5.0 MegaPixel IP Camera in the parking lot to monitor vehicles and provide a high quality image to zoom in on license plates. You could put a Wireless AXIS 207W with audio in the front lobby to minimize cabling requirements and to provide audio surveillance. Lastly, you can use a Sony SNC-RZ25N PTZ IP Camera with an outdoor enclosure to monitor the rear entrance and have the ability to pan/tilt/zoom the camera to needed areas.

All three IP cameras can be easily connected to the local network and configured within the IP camera recording software to monitor and record each individual camera.

BNC/Analog Output

Some IP cameras also come with a BNC/Analog output allowing you to connect the camera to your existing CCTV system. This would allow you to connect the IP camera to your DVR recording station and still have a network connection attached allowing for remote viewing and recording to a PC or offsite location. Be sure to verify the IP camera has the ability to send video to both the BNC/Analog output and through the network simultaneously.

PoE Power over Ethernet

Power over Ethernet (PoE) is the ability to power your IP camera and provide network activity via one RJ45 network cable. This provides an easier installation and lower cable installation costs as this eliminates the need for a power cable to be connected to the camera. To take advantage of this technology, make sure your IP camera is PoE compliant. A PoE network router/hub or Midspan will be required to provide power to the camera via the RJ45 network cable. PoE kits are also available which provide power via network cable when you do not have a Midspan or router/hub. One PoE kit will be required per camera and will need to output the correct power requirements (5V, 9V, 12V, etc.).

I/O for Card Readers, Alarms, etc.

IP cameras can easily be added to existing security including card readers, alarms, glass breakers, access control, etc.. The IP camera can be set to receive an input from these devices which can then tell the camera to record video when a specific event is triggered. Outputs can also be set where if the IP camera detects motion, a signal is sent to the alarm to create an audio siren or alert.

Conclusion

We hope Part One and Part Two of “IP Cameras vs. CCTV Cameras” has educated you in the advantages of IP over CCTV. It is best to know what options exists for you before making a purchase so you can effectively monitor your home or business.

Aarkstore Enterprise asked:




For our second annual network power research project, we delved into near-term improvements that can be made at the sub–network element (NE), NE, and network (super-NE) level. Our initial network modeling, which focused on reducing power through more efficient gear and limiting IP transit traffic in the core, shows that power savings up to perhaps 50% of the present method of operation (PMO) are possible through architectural changes that are straightforward but still challenging to implement. Industry convergence on an “Energy Star”–like power metric and improvements in sub-wavelength grooming efficiency are critical. However, ultimately, just keeping power consumption flat given traffic growth projections will require more radical approaches.

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Table of Contents :

Executive summary

In a nutshell

view

Power metrics and claims are hard to verify and compare

Three levels of reduction are needed in infrastructure

Still early days for changing architecture to save power

Significant power reduction in the face of bandwidth growth will require radical change and vision

Overview and background

Phase I findings

Phase II goals

Who cares?

Modeling and survey highlights

Our modeling choice

Power consumption is a function of the whole network

Good comparative network element power data is still much too hard to obtain

The difficulty of validating power reduction claims

Comparison/contrast of power consumption across product classes/network layers

Comparison of power consumption within a product class/network layer

Comparison of IP router power consumption

Comparison of long-haul/multi-reach backbone DWDM network element power consumption

Comparison of metro/regional WDM network element power consumption

What about converged packet-optical (CPO) hub products?

Network-level software: assessing its impact

Baseline architecture

Introduction and explanation of baseline architecture model and the present method of operation (PMO)

Opportunities/challenges related to the PMO

Alternative approaches to the PMO

Alternative one: newer-vintage network elements, but no major architecture changes

Alternative two: adopt a more aggressive architecture change

Adopt an IP router bypass architecture for transit traffic, leveraging integrated packet-optical capabilities

Network power consumption modeling results

True improvements in network power use will come through changes in topology and architecture

Other architectural approaches not modeled by

Ciena’s modeling of a subwavelength switching layer

Implications of the “muxponder tax” modeled by Infinera

Organic networks and Juniper’s modeling of router virtualization

IPoWDM

Holistic packet-optical approaches: Alcatel-Lucent’s CBT and Huawei’s IPTime

Qualitative survey results

Progress over the past year is clear, but much more needed

Gathering and using real-time NE data is still rudimentary

Relative importance of power as a product spec and selling point

What technologies and techniques did vendors list as critical to lowering power?

Impacts of packet-optical integration in the core

Special features and capabilities different vendors bring

Changes vendors are making to their products now to improve power stats

Future directions in product development

Importance of a separate switching layer?

Looking ahead: speculative architecture(s) and other more radical approaches

More drastic changes needed: traffic growth set to outrun incremental power improvements

Initial thoughts

“Clean slate” versus evolving networks and other challenges

Green Touch’s 1,000-fold target

Technologies further out, possible next steps in research

List of Figures

Figure 1: Industry levers to reduce network power consumption

Figure 2: Power consumption (W/Gbps) comparison across network layers/product classes as a function of utilization

Figure 3: Comparison of power consumption for core IP routers at 100% utilization

Figure 4: Comparison of power consumption for LH DWDM platforms at 100% utilization

Figure 5: Comparison of power consumption for metro/regional WDM platforms at 100% utilization

Figure 6: Reference network architecture

Figure 7: Next-generation architecture with IP router bypass and converged packet optical

Figure 8: Metro/regional core network power consumption comparison

 

For more information please visit :

http://www.aarkstore.com/reports/Core-network-power-reduction-will-take-holistic-change-45709.html

PH.NO. 919272852585

OR

Aarkstore Enterprise

Mobile : +919272852585

Fax : +912224169996

Email : press@aarkstore.com

Website : http://www.aarkstore.com

Amy Nut asked:




Ever wonder what type of server is in the rack at the data center used by your company? How about server brand trends around the country? Look no further: The four most popular brands of servers, in descending order, are Hewlett Packard, Dell, IBM, and Sun Microsystems.

Shifting Brand Loyalty

As data center development has changed over the past couple of decades, brand loyalty has also shifted. Up until recently, IBM was the number one IT vendor in the world, unmatched by any other brand in terms of sales numbers or revenue. However, just like everything in the IT world, things are changing.

HP has recently surpassed IBM in popularity. Now focused on the data center market, HP is getting ready to meet the increased demand that goes with producing data center servers. HP’s popularity increase seems to know no bounds. In fact, some recent surveys show that over 40% of IT professionals prefer HP servers to any other brand.

About Servers

A server is the hub of a network, and it is a data center’s responsibility to have a high quality server in order to maintain its business. Rather than processing power, purchasers of servers focus RAM and hard drive speed to handle the network traffic. Energy efficiency is also becoming a major concern in purchasing decisions.

What Makes a Good Server?

So what influences the server buying decisions of data center professionals? Choice of a server depends on many factors, including availability and price, but most IT professional find these qualities to be extremely important:

- Quality: IT professionals report that a good server has high quality parts, a major factor in server reliability. A server is arguably the most important part of a data center infrastructure, and data center business is very closely linked to reliability and a high level of availability. Having a server with high quality parts is of the utmost importance.

- Support: Similarly, IT professionals require their servers to have an excellent support team. If the server does go down for some reason, every moment matters in trying to repair it. Having a good support team on your side can be the difference between hours of server downtime and days or weeks of lost usage and revenue.

- Performance: Server performance is another important factor considered by IT professionals when buying servers for a data center. Often, IT professionals avoid server brands that have caused past problems for their data center. Negative reviews from other professionals also have an impact on performance-based buying decisions.

- Customization: Another important factor in choosing a server for a data center is the ability to customize the equipment to fit individual needs. Standard specifications may not be appropriate for all applications.

Future of Data Center Servers

With the current focus on environmental responsibility, data centers are making every attempt to go green. The amount of power used by a server may become more of a factor in purchasing decisions as energy costs rise. Server efficiency may soon be one of the top qualities IT professional prize in their server purchasing decisions.

In today’s difficult economy, server power usage is likely to become a major issue. Many companies are struggling to shore up the bottom line, and more efficient servers help them reduce their operating budget. In addition, new environmental laws are likely to make the “greenness” of a server one of the main purchasing considerations.