What’s the difference between a Router, Switch and Hub?

While Routers, Switches, and Hubs are Network devices, they all serve different purposes.

The First Ethernet Networks had no Idea of virtual LANs (VLANs).  Thus, a total network consisted of a single IP subnet.  If you wanted to connect two or more devices on the LAN using Ethernet, you would use a Network Hub.

A Hub is simply a multiport Ethernet repeater.  When the Hub receives information from a sending device, it simply repeats, or broadcasts, the exact same information out all ports on the Hub.

The purpose of a hub is to connect all of your network devices together on an internal network.  It is a device that has multiple ports that accepts Ethernet connections from Network Devices and is not intelligent because it does not filter any data based on where the data is supposed to be sent.  A hub only “knows” when a device is connected to one of its ports so when a data packet arrives at one of the ports. The hub will just Rebroadcast that data to every port that has a device connected to it.  When this happens it not only creates security concerns, but it also creates unnecessary traffic on the Network which wastes bandwidth.

A Hub quickly becomes an inefficient mode of communicating transport as the number of connected devices increases.

As a result of this, the Network Switch was created.

Now a switch is very similar to a hub as it is also a device that has multiple Ethernet ports and is connected to Network Devices. But unlike a Hub, a Switch is intelligent. A Switch can actually learn the physical addresses of the devices that are connected to it and it stores these physical addresses called MAC addresses in its table so when a data packet is sent to a switch It’s only directed to the intended destination port. Switches are far more preferred over hubs because they reduce any unnecessary traffic on the Network.

How a Network Switch functions:

HP ProCurve 4202vl-72 Switch ChassisFirst, a Switch divides a LAN using a single broadcast domain into multiple broadcast domains.  This helps to decrease the amount of broadcast traffic congestion on bigger Networks.

Next, a Layer 2 Switch can eliminate the need to repeat

Instead, the Switch will appear from the Ethernet frames received by the sending device.  The frame will contain a destination MAC address, which is cross-referenced from the Switch MAC address table.  If the Switch understands the specific port the MAC address corresponds to, it’s sent just out that port as one casted frame.

Now hubs and switches are used to exchange Data within a local area network such as in your home network or in a business. They are not used to exchange data outside their own network… that’s where the router comes in.

Cisco - 540W-FXO Unified Communications Wireless RouterA Router is a virtual or physical appliance that passes Information between two or more packet-Switched Networks – analyzing a given data packet’s destination IP address, calculating the best way for it to reach that destination and then forwarding it accordingly.

A router does exactly what its name implies a router is a device that routes or forwards data from one network to another based on their IP address when a data packet is received from the router inspects the Data’s IP address and determines if the packet was meant for its own network or if it’s meant for another network. If the router determines that the Data packet is meant for its own network it receives it, but if it’s not meant for its own network, it sends it off to another network.

Routers vs. Switches

As mentioned earlier, Layer 2 Switches can break up one each VLAN is its own IP subnet.

Rather than Switching frames using MAC addresses, routing between subnets uses IP addresses which are located within IP Network packets include ethernet frames with IP address destination and source information.

Traditionally, a dedicated Router would provide routing services for Layer 2 Switches. However, a more modern approach on venture Networks you would use a Layer 3 Switch, which combines routing and switching functions in a single device.

A company like CCNY Tech can help you create the Right IT Infrastructure for your business or organization. Let our team of engineers find the right solution to make your system run securely and efficiently.

CCNY Tech offers small businesses in Upstate New York ways to be proactive with their security measures while being on-call to handle technical issues that come up. Contact a specialist at 315-724-2209 and ask about the exclusive TechAgent program that has been built around helping SMBs to increase uptime while staying within budget.

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Visit From Congressman Anthony Brindisi

Representative Anthony Brindisi visited our facility in Utica NY this morning to see what CCNY Tech offers our customers, employees and community.

These week Rep. Brindisi is touring some local businesses in the district and decided to stop in to see us at work. He was very impressed with the size of our operations and looks forward to helping us grow and add jobs in the area.

CCNY Tech continues to grow and expand our reach and services to match our clients ever evolving technology needs.

 

Buy Re-manufactured Servers:  Utica/RomeSyracuseRochester  – Buffalo  – Albany   – NYCOswego

 

Is it Time? Signs You Are Ready For Managed IT Services

Managed Services can be generally defined as outsourcing day-to-day management responsibilities for improving operations and cutting expenses. When it comes to technology, it’s the outsourcing of continual monitoring and day-to-day administrative duties of your IT infrastructure.

How do you know if your organization could benefit from managed network services? The best way to determine if you’ll cut costs is to know what you are currently paying for your IT management internally. You need to judge the true upkeep costs and then comparing that to an estimate from a reputable managed network services provider like CCNY Tech.

Do you have a dedicated IT professional on staff?
Many small to medium-sized businesses have IT needs that will quickly overwhelm the time and skills of the unlucky staff member who isn’t an IT professional but just happens to be the tech-savviest person around. Many business owners find themselves in a tough position trying to keep a handle on technology while also running their business.

Even if this task is delegated to someone else, it still means someone on your staff is spending a large amount of time fixing IT problems rather than being productive at their job. In most cases, they probably don’t have the time or technical knowledge to plan for the future of your IT systems. This path will doom you to a continual reactive cycle that never prepares you for future growth, challenges, or demands on your network.

If you don’t have a dedicated IT person, managed services is the perfect substitute. Rather than paying the salary and benefits for another employee, you could pay a reduced amount for managed services. A technology professional with five years of experience may be worth $70,000+ a year. That $70,000 salary only gets you one person, not a team of professionals with expertise and knowledge. When you hire your own IT staff, there are also challenges scheduling around vacation, training, and illness. Using managed IT services provides full time IT coverage and vacations, illness, and other absences don’t affect your support.

Many choose our Managed Services because their IT professional is swamped with everyday tasks—and things are falling through the cracks.
Is your IT person on top of your software licensing? Are your security updates and upgrades being run continually on all your computers, server, and other devices? Even a single seasoned professional can be overrun with work that keeps piling up, and the biggest culprit is the everyday management and monitoring tasks that get delayed and shunted to the side when a bigger or higher priority issue comes up.

You’re always bringing in outside help to fix “emergency” problems that could have been detected and handled earlier.
If you currently work with an IT company, take a look at your “brake/fix” history with them. Is your server going down repeatedly because no one detected one of its hard drives was going bad? Are you continually paying for someone to come on-site and fix little problems with your employees’ computers?

If you’ve experienced any one or more of these signs, then Managed IT Services from CCNY Tech might be right for you. Call us at 315-724-2209 and press ‘1’ for sales.

Buy Re-manufactured Servers:  Utica/RomeSyracuseRochester  – Buffalo  – Albany   – NYCOswego

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