Understanding Ports of Gigabit PoE Switch

Since the introduce of Power over Ethernet (PoE) technology, PoE LAN switch has become popular among wide users. However, newbies are usually confused with the multiple port configuration on gigabit PoE switch. Since there are already regular PoE Ethernet ports for powered devices (PDs), what are the function of other ports like console port, SFP/SFP+ port and combo port on gigabit PoE switch? This article will take 8 port PoE switch, 24 port PoE switch and 48 port PoE switch as example to illustrate multiple port for your reference.

Console Port on Gigabit PoE Switch

Like regular Ethernet switch, gigabit PoE switch often has one built-in serial console port, say FS S1130-8T2F 8 port PoE switch. It is the port for controlling and managing switch since there are no display device for a switch. Usually console port on gigabit PoE switch is an RJ45 receptacle. To connect a computer directly to the 8 port PoE switch, one should use dedicated rollover cable rather than Ethernet cable for connection.To use console port, you need physical access to the appliance. Therefore for terminals without serial console port, one should attach a corresponding adapter to the devices before cabling.

console port of 8 port gigabit PoE switch

Figure 1: A display of one console port on FS S1130-8T2F 8 port PoE switch for control.

RJ45 Port vs SFP Port on Gigabit PoE Switch

RJ45 port on gigabit PoE switch is the regular PoE port to achieve data and DC power transmission for PDs. It is an auto-sensing 10/100/1000Mb copper port supporting only Ethernet cable (Cat5e/6/6a/7) for connection. Thus RJ45 port connection is limited to 1G speed and 100m (330ft) short distance transmission. Then how about longer distance transmission scenario?

Different from RJ45 port, SFP port on gigabit PoE switch has the opt of both short and long reach. Why? The mini GBIC port has inherited the compatibility of either copper or optical SFP connection. Provided you employ the corresponding SFP module and cable on power over Ethernet switch. For long distance transmission, you should use fiber SFP modules with fiber patch cable for optical link. For short distance, you can opt to use RJ45 SFP module with copper network cable on gigabit PoE RJ45 switch for electrical link. Gigabit PoE switch often provides 2 SFP port for optical connection or uplink aggregation requirement, which enhances network adaption resiliency of PoE powered switch. For instance, S1400-24T4F 24 port PoE switch has 2 SFP ports reserved, which caters for fiber uplink to upper layer switch.

RJ45 Port vs SFP Port on Gigabit PoE Switch

Figure 2: A display of RJ45 ports vs SFP ports on FS gigabit PoE switch.

SFP+ Port on Gigabit PoE Switch

To illustrate SFP+ port on PoE Ethernet switch, we’ll take S1600-48T4S 48 port PoE switch as example. This 48 port PoE gigabit switch comes with 1 console port, 48 PoE+ RJ45 ports and 4 SFP+ ports. The 48 RJ45 ports are PoE ready to power on dozens of VoIP phones, IP cameras and wireless APs. The 4 SFP+ ports on gigabit PoE switch serves as uplink to connect 10G SFP switch for uplink aggregation.

S1600-48T4S 48 port gigabit PoE switch SFP+ port application

Figure 3: Deploying S1600-48T4S 48 port PoE switch as gigabit access switch to link 10G SFP switch via SFP+ ports, and connect PDs.

Combo Port on Gigabit PoE Switch

Though manufactures often clearly label combo ports on gigabit PoE switch for identification, many people don’t know its function. Take S1400-24T4F 24 port PoE switch as example, 2 combo ports are reserved on this 24 port PoE managed switch. The combo port compounds RJ45 and SFP front ends in one single interface, thus it supports either copper or optical SFP link. However, you cannot use these two physical accesses on PoE network switch simultaneously. That is, once you activate combo SFP port on gigabit PoE switch, you also disable the opposite copper port.

S1400-24T4F 24 port gigabit PoE switch combo port

Figure 4: A demonstration of combo ports on gigabit PoE switch: S1400-24T4F 24 port PoE switch from FS.COM.

Conclusion

To sum up, multiple ports on gigabit PoE switch owns different functionality, which enhances switching resiliency for different network cabling. RJ45 port on PoE powered switch is an normal one for copper link to PDs. SFP port of gigabit PoE switch provides options of fiber cabling or copper cabling due to fiber SFP module and RJ45 SFP module compatibility. 10G SFP+ port on 48 port PoE switch serves as uplink port for link aggregation in network layer. Combo port compounds RJ45 and SFP interface in one single fabric on gigabit PoE switch. So it helps to extend flexibility of physical access through the network. For 8/24/48 port cheap PoE switch buying, you can find decent offer here with optimal port configuration.

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Gigabit PoE Switch vs Normal Switch

The telecommunication industry has always been developing with leaps and bounds and technology changes with each passing day. For common people with few network knowledge, the evolving optional network devices like PoE switch can be a big puzzle. What is PoE? What is the distinction of gigabit PoE switch vs normal switch? Read this article for reference.

What Are PoE and PoE Switch?

PoE, abbreviation of Power over Ethernet, is a technology that enables Ethernet cable to supply power. Thus power sourcing equipment (PSE) can transmit both data and power to powered devices (PD) simultaneously via one single cable. PoE has two standards available on network switch: IEEE 802.3af/at. The former orginal PoE standard is defined in 2003, which provides 15.4 W power budget to PDs (12.95 W available for accessing). The latter PoE+/PoE Plus standard defined in 2009 provides up to 30 W (25.5 W) power.

PoE switch is one of the two types of PSE for PoE implement: endspan PoE switch and midspan PoE injector. To enhance network resiliency, gigabit PoE switches provided by FS.COM are highly compatible IEEE 802.3af/at managed PoE+ switches. For example, S1130-8T2F managed gigabit 8 port PoE switch with 2 SFP ports can connect to gigabit Ethernet network while S1600-48T4S 48 port PoE switch can use the SFP+ ports to connect with 10gbe switch for higher performance data transfer.

S1130-8T2F 8 port PoE switch

Figure 1: FS S1130-8T2F 8 port PoE managed switch can be flexibly placed in a rack, on a wall or on desktop.

PoE Switch vs Normal Switch: What’s the Difference?

In a word, PoE switch and normal switch differ from PoE accessibility. A regular Ethernet switch is not PoE enabled to supply power for end users over Ethernet. Therefore the user requires one extra cable to connect power outlets. However a normal switch can also become PoE ready by employing a midspan injector between the switch and PDs. The injector will add electrical power while receiving data signal from Ethernet switch end cable, and then deliver both data and power to PDs. But in this circumstance the injector also needs a wire for power. When using gigabit PoE switch, only one power cable is required. Then the PDs can be directly plugged into the PoE gigabit switch port for both data transmission and power supply. The illustration and Table below list the differences of employing PoE switch vs normal switch while adding PoE to network.

gigabit PoE switch vs normal switch

Figure 2: An illustration of deploying PoE gigabit switch vs normal switch when adding PoE to network.

  PoE Switch Normal Switch
Required Accessories Easy for management (power and transmission) Require separate two wires for powering on normal switch and PoE injector
PoE Access Method Upgrade to PoE network by replacing the normal Ethernet switch with PoE Ethernet switch Install PoE injector between switch and PDs to add PoE capability to the existing non-PoE switch
Emergency Reaction Potential chance of the whole system’s outage Only one device be affected
What Are the Advantages of PoE Switch?

As mentioned above, PoE switch differs from normal switch for supplying power to PDs in the meantime of data delivery. Though the normal switch system can also acquire PoE by installing injector, PoE endspan has the superiority of direct Power over Ethernet ability. Counting to this, gigabit PoE switch owns edges over normal switch as follows. First, it enables PDs like IP surveillance cameras to be placed almost anywhere: on the ceiling, concealed in a wall, or even underwater while only one cable is needed to run to them. Second, it saves extra expanse and time for power cabling and injector installation. Third, with simplified cabling of all PDs directly connected to gigabit PoE switch, the data center is easy for management and control. Besides, PoE gigabit switch itself is designed with advanced features like high-performance hardware with software, auto-sensing PoE compatibility, strong network security and environmental adaptability.

Conclusion

Gigabit PoE switch can supply power to PDs in the meantime of data transmission via one single Ethernet cable while normal switch can only send data to them. For PoE implement, normal switch requires a power-on auxiliary injector as midspan between switch and powered devices. Thus PoE switch owns advantages of direct PoE connection, easy and flexible placement, cost-efficiency, simplified management and etc. For any applications of IP surveillance cameras, VoIP phones and wireless APs, PoE switch over normal switch is a good solution to go.

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Use 8 Port PoE Switch for IP Surveillance

With increasing privacy awareness and demand for security monitoring, IP surveillance has been widely used in the current society: in public supermarket, hotel, enterprise and even home. PoE network switch is used to provide both power and data connection to IP cameras in surveillance system. For small and medium-sized business or home application, 8 port PoE switch is a good choice.

8 port PoE switch for IP Surveillance

Figure 1: Using FS 8 port PoE switch for IP surveillance.

Why Use 8 Port PoE Switch for IP Surveillance?

Usually, 8 port PoE switch is used for supply power to powered devices (PD) for placing flexibility, including IP phones, IP phones and wireless access points (WAP). Some vendors like FS provide 8 port PoE switch with high resistance to electromagnetic interference and severe environment adaptability. This guarantee the smooth operation of weather-proof IP cameras and the stability of the whole IP surveillance system. Moreover, with all IP surveillance components centralized together with PoE switch, it is more convenient for management and control.

What Are the Considerations for Choosing 8 Port PoE Switch?

For an IP surveillance system with very few IP cameras, one can simply add a PoE injector (midspan) between the non-PoE Ethernet switch and IP cameras. This is a cost-effective solution for elementary IP surveillance system because an 8 port PoE switch is usually more expensive than a PoE injector. However, what about more than 4 IP connections are required? In this case, PoE switch 8 port is absolutely a better way to go. Here are some considerations one should refer to while selecting a proper 8 port PoE switch for IP surveillance.

·The Power Consumption of IP Camera

Knowing the power consumption of each IP camera helps to choose an 8 port PoE switch with corresponding per port power consumption and the total power budget. The power consumption of PoE IP cameras can reach up to 20W (PTZ IP cameras RLC-423), and be as low as 3 or 4W. Just remember that your 8 port PoE switch should be able to provide power for each IP camera and won’t exceed its total power budget.

·Max. Power Consumption of 8 Port PoE Switch

There are two PoE standards: IEEE802.3af and IEEE802.3at. IEEE802.3af PoE standard can deliver 15.4W maximum power on each port of the switch, and 12.95W power available at PDs. IEEE802.3at is a PoE+ standard with 30W per port and 25.5W available for transmission. Each PoE switch has power consumption specifications for per port and as a whole. For example, FS S1130-8T2F 8 port PoE switch complies with both IEEE802.3af and IEEE802.3at. Per port maximum power consumption is 30W and total budget of the PoE switch is 130W. For higher power budget, FS S1250-8T2F 8 port PoE switch can reach up to 250W. Make sure the maximum power supply of the whole switch is more than your IP cameras’ budget, or some of your IP cameras may won’t be provided with enough power. This is also the cause for poor performance and video loss.

·Managed or Unmanaged

Unmanaged 8 port PoE switch is a “dumb” plug-and-play one with fixed configuration, which runs in the most basic form with no management functionality. Managed one is an advanced version with superior functionality, configuration customization and remote security control. For heavy-workload networks with management requirement, managed 8 port PoE switch is obviously a future-proof way to go. It is noted that smart partly-managed PoE switch is a choice for functional and cost-efficient concerns. But for IP surveillance, choosing managed 8 port PoE switch is and will continue to be a future-proof solution.

There are other factors one may concern about, such as 1U form factor for space budget and stackable one for network expansion. Customized demand may be required for some special occasions. For instance, a fanless design is important for silent operation in libraries, classrooms and laboratories. FS S1130-8T2F 8 port PoE switch can meet the need. The best way is to list all those points you care about, then check each one for the targeted PoE switch.

How to Install 8 Port PoE Switch in IP Surveillance System?

An IP surveillance system comprises PoE switch, IP cameras, NVR and Ethernet cabling. To illustrate how to use PoE switch for IP surveillance, we’ll take FS S1130-8T2F 8 port PoE switch as example. This PoE+ switch has 8 x 10/100/1000Base-T RJ45 Ethernet ports and 2 x gigabit SFP ports, with IEEE 802.3af/at compatible, which means it supports 30W maximum power consumption.

To set up an 8 port PoE switch for IP surveillance, you can refer to the following tips. First connect all IP cameras and NVRs with RJ45 ports on PoE switch. Then connect LAN/WAN with SFP ports. It is noted that for non-PoE cameras, a splitter is required as a medium to connect PoE switch with IP camera. The following picture shows the detail information for installation.

FS 8 port PoE switch application

Figure 2: Installing FS S1130-8T2F 8 port PoE switch for IP Surveillance.

Conclusion

PoE switch provides placement flexibility, space and cost saving, and management convenience to IP surveillance system. For buying 8 port PoE switch, one should concern about power consumption of IP cameras and PoE switch, managed one for superior functionality and other customized requirements. Generally an 8 port PoE switch can satisfy a small sized IP surveillance system. For medium and bigger sized systems, FS also provides managed PoE switch with 24 and 48 port. Welcome to visit our official website for more detail information.

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