VPLS vs MPLS: What's the Difference?

The Internet has undergone tremendous changes and broken the barriers from the impossibilities to the possibilities. To seamlessly and securely get access to the Internet or Web is what we’re seeking along the way. VPLS and MPLS are two competing technologies to direct network traffic, letting you have speedy data transfer and communication. What is a VPLS or MPLS network? What’s the difference between VPLS vs MPLS? We’re gonna to elaborate them one by one.

What Is MPLS?

MPLS (Multiprotocol Label Switching) is a type of communication that enables a service provider to provision cost effective and flexible “Virtual Private Networks” across a shared core network infrastructure. MPLS is used to send data and network traffic along the most efficient routes, which may be predetermined and are communicated using labels. Packets are carried on predetermined routes along point-to-point connections through label switch routers (LSRs) until they arrive at their destination. In MPLS network, the MPLS switch (eg. FS S5800-48F4S SFP switch) transfers data by popping off its label and sending the packet to the next switch label in the sequence. MPLS perfectly integrates the performance and traffic management capabilities of Layer 2 switching with the scalability and flexibility of Layer 3 routing.

What Is VPLS?

VPLS (Virtual Private LAN Service) is a service that uses MPLS and VPN (Virtual Private Networking) to securely and seamlessly connect multiple LANs over the Internet, making them appear as if they were all on the same LAN. VPLS enables a service provider to extend a Layer 2 network across geographically dispersed sites using a shared core network infrastructure. VPLS works by creating a virtualized Ethernet switch at the provider’s edge to link remote sites. VPLS happens at Layer 2, and the carrier builds out the network, but the customer can do their own routing if they wish. This approach is ideal for corporations that have multiple data center footprints and office or remote locations that require low-latency connections between sites.

VPLS vs MPLS: Factors to Consider When Choosing Them

When deciding over VPLS vs MPLS for connectivity between remote locations, there are multiple factors to consider. We’ll look into them one by one.

Switching Layer

One of the main benefits of VPLS over MPLS are the levels of security offered. As aforementioned, VPLS extend a Layer 2 network across geographically dispersed sites using a shared core network infrastructure. While MPLS perfectly integrates the performance and traffic management capabilities of Layer 2 switching with the scalability and flexibility of Layer 3 routing. VPLS does not share layer 3 routing tables with the service provider, while MPLS may do so, means that VPLS is generally the better solution for highly-sensitive data.

Network Size & Traffic

Generally, MPLS can deliver a wider type of network traffic than VPLS. VPLS is typically used for fewer locations that need very high speeds, very simple networks with high performance and high security. Thus, if you desire to connect entities such as data centers across the long-haul network backbone, VPLS is preferable as an Ethernet-based connection strategy. If a customer had hundreds of locations across the country who needs voice, data and video traffic to be carried to all locations, MPLS might make more sense because it is protocol-agnostic and can handle multiple types of traffic. MPLS may be an even clearer choice where large numbers of branches are involved.

Levels of Scalability

Another key difference between MPLS and VPLS is the inherent level of scalability. Due to the manner in which these two technologies interact with your network, MPLS is considered to be far more scalable. Using a backbone of MPLS for maximum network access and scalability, together with VPLS connections for more sensitive data often represents the best possible compromise, you would make the most of both protocols and substantially increase network efficiency.

Conclusion

Although MPLS and VPLS are different technologies, they are not mutually exclusive. Many businesses deploy both MPLS and VPLS protocols within their network in order to get the best of both worlds. FS provides gigabit ethernet switch and 10gbe switch which support both MPLS and VPLS. All these switches comes with rich L2/L3 business processing ability for core switching networks.

Originally published at http://www.fiber-optic-tutorial.com/vpls-vs-mpls-whats-difference.html

VPN vs VLAN: What's the Difference?

As the popularity of the Internet has grown, many businesses are seeking for approaches to extend their own networks. First came Intranets, which are sites designed for use only by company employees. Nowadays, many of them are creating their own VPN (Virtual Private Network) or VLAN (Virtual Local Area Network) to accommodate the needs of remote employees and distant offices. What is a VPN and what is VLAN? This post will explain these two terms and the differences between VPN vs VLAN.

What Is a VPN?

A VPN is a virtual private network that utilizes a public network (usually the Internet) to connect remote sites or users together. A typical VPN network has a main local area network (LAN) at the corporate headquarters of a company, other LANs at remote offices or facilities, and individual users that connect from out in the field. Instead of using a dedicated leased line, a VPN uses "virtual" connections routed over a public or shared infrastructure such as the Internet or service provider backbone network. Therefore subscribers who are physically isolated from the main LAN can get access to the company's private network and remotely.

VPN Applicable Network Scenario

Here is a typical example of using the VPN network. As illustrated in the figure below, Network “A” sites have established a VPN (depicted by the red lines) across the service provider’s backbone network, where Network “B” is completely unaware of it’s existence. Both Network “A” and Network “B” can harmoniously coexist on the same backbone infrastructure without interrupting each other.

What Is a VLAN–the Subcategory of VPN

A VLAN is a group of networking devices configured to communicate on one or more LANs as if they were attached to the same wire, but actually they are located on a number of different LAN segments. VLAN networks are based on logical instead of physical connections with great flexibility. A VLAN network defines broadcast domains in a Layer 2 network. A broadcast domain is the set of all devices performed to receive broadcast frames originating from any other device within the set. Broadcast domains are usually bounded by routers since routers do not forward broadcast frames.

VLAN Applicable Network Scenario

As shown in the figure below, Layer 2 network switches are used to create multiple broadcast domains based on the configuration of these switches. Each broadcast domain is just like a distinct virtual bridge within a switch. By adding a Layer 3 router, it possible to send traffic between VLANs while still containing broadcast traffic within VLAN boundaries. The router uses IP subnets to deliver traffic between VLANs. Each VLAN has a distinct IP subnet, and there is a one-to-one correspondence of VLAN and IP subnet boundaries.

VPN vs VLAN: How They Differ From Each Other?

VPN vs VLAN, they are two different concepts but related to each other. A VLAN is a subcategory of VPN, but they are designed for different hierarchies. VPN constructs range from Layer 1 to Layer 3, while VLAN is purely a layer 2 construct. A VLAN is used to group multiple computers that are not usually within the same geographical areas into the same broadcast domain. A VLAN can also segregate computers in a larger local network into smaller networks for each office or department and shielding the data so that they do not act as if they are on same network even if they are in the same switch. However, a VPN is more often related to remote access to a company’s network resources. It’s a method of creating a smaller sub network on top of an existing bigger network compared with VLAN.

Summary

No matter which one you choose over VPN vs VLAN, the foremost thing is to get reliable network switches or routers implemented in VPN or VLAN networks. FS can always fulfill your requirements by offering gigabit ethernet switch, 10gbe switch, 40gbe switches, as well as new gigabit VPN routers. They’re with powerful data-handling capacity and high compatibility for applications in data centers and enterprises.

Originally published at http://www.fiber-optic-tutorial.com/vpn-vs-vlan-whats-difference.html

Data Switch vs Hub in a Home Network

Data switches and hubs are common networking devices used to regenerate degraded signals and split a signal into multiple signals. They are handy for splitting up an internet connection to your home network. But do you know how they work in a home network? If they both accomplish the same thing, what’s the difference between a data switch vs hub?

What Is a Data Switch?

A data switch is charged with the job of connecting smaller segments of a single network into a connected whole. It transfers data across a network segment using MAC addresses for reference. Data switches are extensively used in Ethernet local area networks. A data switch operates on the Data Link Layer of the OSI (Open Systems Interconnection) model. This means that data switches are fairly smarter than hubs, as they can route data on a dynamic level. If information is destined for a certain computer, the data switch will only send the data to this computer. This addresses our collision problem as switches use what is called micro-segmentation, which will be elaborated later in this article.

What Is a Hub?

Hub is a network device which controls number of switches and router for the whole network. A hub is a “dumb” device in that it broadcasts whatever it hears on the input port to all the output ports. The good thing about “dumb” devices is that they don’t need much configuration or maintenance. But this leads to collisions between data packets and a general degrading of network quality. If you have a hub set up between your router and the rest of your network, you’re setting yourself up for a huge headache. A hub looks just like a switch, but works differently on the inside. You connect devices to a hub using Ethernet cable and any signal sent from a device to the hub is simply repeated out on all other ports connected to the hub.

Data Switch vs Hub in a Home Network

Data switch vs hub? How do they differ from each other? Hubs are considered Layer 1 (Physical Layer) devices whereas data switches are put into Layer 2 (Data Link Layer). This is where hubs and switches mainly differ. The Data Link layer of the OSI model deals with MAC addresses and switches look at MAC addresses when they process an incoming frame on a port.

Moreover, a data switch is much smarter but pricier than a hub. A data switch can actively manage the connections between the input port and the output ports, so you won’t run into the collision problem or any of the other issues that plague hubs. As you can see below, there are multiple collision domains or segments for the switch network. If computer A and computer B sent data to each other at the same time, you would have a collision. Computer A and computer C or D, however, will not experience a collision in the process. In comparison, for a hub network, there is just one collision domain, which means that if one computer transmits data, it would be interrupted by any of the other computers in the network. Thus, the more devices you connect to the hub, the more collisions there will be in the whole network. The following figure illustrates a data switch vs hub in collision domains.

Conclusion

Data switch vs hub, which one should you choose for a home network? If you purchased the device in question within the last few years, the chance is almost zero that it’s a hub. Historically, switches were expensive and hubs were cheap, but advances in technology have made switches so cheap that they don’t even bother making hubs anymore. Thus, nowadays data switches are higher-performance alternatives to hubs in a home network. FS provides a full set of high performance data switches, including gigabit ethernet switch, 10gb ethernet switch, 100gbe ethernet switch, etc. If you have any requirement, please kindly visit www.fs.com.

Source: http://www.fiber-optic-tutorial.com/data-switch-vs-hub-for-home-network.html

Do I Need a Gigabit Switch or 10/100Mbps Switch?

Ethernet network speeds have evolved significantly over time and typically range from Ethernet (802.11) at 10Mbps, Fast Ethernet (IEEE 802.3u) at 100Mbps, Gigabit Ethernet (IEEE 802.3-2008) at 1000Mbps and 10 Gigabit Ethernet (IEEE 802.3a) at 10Gbps. Meanwhile, Ethernet switches have also escalated from 10/100Mbps switch to Gigabit switch, 10GbE switch, and even 100GbE switches. The topic came up frequently that “Do I Need a Gigabit Switch or 10/100Mbps Switch?” Gigabit switch vs 10/100Mbps switch, which do I need to satisfy my network speeds requirement? This post will give you the answer.

Gigabit Switch: the Mainstream on Network Switch Market

A Gigabit switch is an Ethernet switch that connects multiple devices, such as computers, servers, or game systems, to a Local Area Network (LAN). Small business and home offices often use Gigabit switches to allow more than one device to share a broadband Internet connection. A gigabit switch operates in the same manner, only at data rates much greater than standard or Fast Ethernet. People can use these switches to quickly transfer data between devices in a network, or to download from the Internet at maximum speeds of 1000Mbps. If a switch says “Gigabit", it really means the same thing as 10/100/1000, because Gigabit switches support all three speed levels and will auto-switch to the appropriate one when something is plugged in. The following is a Gigabit 8 port poe switch with 8 x 10/100/1000Base-T RJ45 Ethernet ports.

10/100Mbps Switch: Still Alive and Well for Some Reason

10/100Mbps switch is a Fast Ethernet switch released earlier than Gigabit Ethernet switch. The data speed of 10/100Mbps switch is rated for 10 or 100Mbps. When a network switch says "10/100", it means that each port on the switch can support both 10Mbps and 100Mbps connection speeds, and will usually auto-switch depending on what's plugged into it. Currently, few devices run at 10Mbps, but it is still alive on the market for some reason. Actually, 10/100 is sufficient for internet browsing and Netflix. But if you will be doing more than one thing with your network connection, such as file transfers, or the set-top box, I would recommend you go with the Gigabit switch.

Gigabit Switch vs 10/100Mbps Switch: How to Choose?

Network engineers who refresh the edge of their campus LAN encounter a fundamental choice: Stick with 100Mbps Fast Ethernet or upgrade to Gigabit Ethernet (GbE). Vendors will undoubtedly push network engineers toward pricier GbE, but network engineers need to decide for themselves which infrastructure is right for the business. Currently, Gigabit switch is much more popular than Fast Ethernet 10/100Mbps switch. Because gigabit switch used in tandem with a gigabit router will allow you to use your local network at speeds up to ten times greater than 10/100Mbps switch. If either of these component are not gigabit, the entire network will be limited to 10/100 speeds. So, in order to use the maximum amount of speed your network can pump out, you need every single component in your network (including you computers) to be gigabit compliant. In addition, by delivering more bandwidth and more robust management, Gigabit switches are also more energy efficient than 10/100Mbps switches. This offers enterprises the opportunity to lower their power consumption on the network edge.

Conclusion

There’s a multitude of switch options to choose from on the dazzling market. So, before determining the right switch for your network, you’re supposed to have a close look at your current deployment and future needs. But for most cases, we recommend you buy Gigabit Ethernet devices instead of Fast Ethernet devices, even if they cost a little bit more. FS provides a full set of Gigabit switches, including 8 port switch, 24 port switch, 48 port switch, etc. With these high performance Gigabit Ethernet switches, your local network will run faster with better internet speed.

Originally published at http://www.fiber-optic-tutorial.com/gigabit-switch-vs-10-100mbps-switch.html

TAP Aggregation Switch: Key to Monitor Network Traffic

For network professionals, Ethernet switches have already been used very commonly in network design. In order to ensure network security and monitor the performance of the standard Ethernet switches, network test access port (TAPs) have emerged as one of the primary sources for data monitoring or network traffic monitoring. What is network TAP or TAP aggregation switch, and how to deploy it for network traffic monitoring? This post will give you the answer.

What Is TAP Aggregation Switch or Network TAP?

A network tap is a hardware device which provides an approach to access the data flowing across a network. It functions by flow copy or aggregation, thus it’s also called TAP aggregation switch. TAP aggregation switch works by designating a device to allow the aggregation of multiple TAPs and to connect to multiple monitoring systems. In this process, all the monitoring devices are linked to specific points in the network fabric that handle the packets that need to be observed. In most cases, a third party TAP aggregation switch monitors the traffic between two points in the network. If the network between point A and B consists of a physical cable, a network TAP or TAP aggregation switch might be the best way to accomplish this monitoring. TAP aggregation switch deployed between point A and B passes all traffic through unimpeded, but it also copies that same data to its monitor port, which could enable a third party to listen.

Deployment Scenario of TAP Aggregation Switch

TAP aggregation switches or network TAPs can be extremely useful in monitoring traffic because they provide direct inline access to data that flows through the network. The following part illustrates the typical applications of TAP aggregation switches in data center and carrier network.

• Application in Data Center
  As shown in the figure below, user can enable the timestamp and source port label function of TAP devices. The server cluster can access the exact packet process time in each data center layer via source port and timestamp message carried by the packets. From port1, port2, port3, user can distinguish the devices that the streams come from. Through T1, T2 and T3, packets forward latency of each device can be calculated, according to which users can find out the bottleneck during packet forwarding for the further optimization of data center network.

• Application in Carrier Network
  TAP aggregation switch can also be used to assist DPI (Deep Packet Inspection) in carrier networks. As illustrated below, TAP aggregation switch is applied to forward flows of carrier at internet access point and sends a mirrored copy of the packet flow to DPI device at the same time. The DPI device is for traffic analysis, once a virus on website or illegal information has been monitored, the flows will be blocked by a five elements table sent from management channel between DPI and TAP.

FS TAP Aggregation Switches Solution

FS network TAPs or TAP aggregation switches deliver security, visibility and traffic analysis for high density, non-blocking 1G/10/40/100GbE networks at any scale with advanced traffic management capabilities for lossless monitoring of network traffic. They can cost-effectively and losslessly monitor all data center network traffic, while capturing and analyzing only the traffic that is needed. The table below lists FS T5800 and T8050 series TAP aggregation switches.

TAP Aggregation	Key Features
T5800-8TF12S	Standard 1U 19’’ rack mountable, 240 Gbps switching capability 8x10/100/1000 Base-T Ethernet Ports, 8x1000 Base-X SFP Ports (Combo) 12x10GE SFP+ Ports Dual modular power supply
T8050-20Q4C	Standard 1U 19’’ rack mountable 4x10GE SFP+ Ports(Combo) 20x40GE QSFP+ Ports 4x100GE QSFP28 Ports Dual modular power supply
T5850-48S2Q4C	Standard 1U 19’’ rack mountable 48x10GE SFP+ Ports 2x40GE QSFP+ Ports 4x100GE QSFP28 Ports Dual modular power supply
T5850-48S6Q	Standard 1U 19’’ rack mountable 48x10GE SFP+ Ports 6x40GE QSFP+ Ports Dual modular power supply
T5850-32S2Q	Standard 1U 19’’ rack mountable 32x10GE SFP+ Ports 2x40GE QSFP+ Ports Dual modular power supply

Conclusion

TAP aggregation switches are crucial to any network monitoring plan because they offer an uncensored view of all network traffic. With FS TAP aggregation switches, customers can transform opaque data center traffic into comprehensive visibility for security threat detection, service availability monitoring as well as traffic recording and troubleshooting. Apart from TAP aggregation switches, the standard Ethernet switches including Gigabit switches, 10gb switches, 40gb switches and 100gb switches are also available for your choice.

Originally published at http://www.fiber-optic-tutorial.com/tap-aggregation-switch-monitor-network-traffic.html

What Is SFP Connector, SFP+ Connector and SFP28 Connector?

SFP (Small Form-factor Pluggable) module connector with various data speed rate is one of the major optical transceivers used for data communication. With ever-increasing demand for faster speed and higher density, the SFP connectors have experienced several generations of update for the signal speed capability as well as port density, from the original SFP to SFP+ and then to the new SFP28 type. The compatibility of these connecting ports is the pain point for many subscribers in data communication transmission. So what’s the similarities and differences between them and are these module connectors compatible with each other when plugged into switches? SFP28 vs SFP+ vs SFP connector, which one should you choose? This paper will give you the answer.

What Is SFP Connector?

Specified by a multi-source agreement (MSA), SFP connector was first introduced in early 2000 and designed to replace the previous gigabit interface converter (GBIC) connector in fiber optic and Ethernet high-speed networking systems. Based on the IEEE 802.3, SFF-8472 protocol specification, SFP module connectors has the ability to handle up to 4.25Gb/s with greater port density than the GBIC, which is why SFP is also known as mini GBIC. This allowed it to quickly become the connector of choice for system administrators who liked the idea of being able to significantly increase their output per rack. The SFP connectors can support Gigabit Ethernet, Fibre Channel, Synchronous Optical Network (SONET) and other communication standards.

What Is SFP+ Connector?

To cater the need for faster transmission speed, the SFP+ (or SFP10) was introduced in 2006, as an extension of the SFP connector. Based on IEEE802.3ae, SFF-8431, and SFF-8432 protocol specifications, the SFP+ is designed to support data rates up to 10Gb/s. Compared with its predecessor SFP, the newly SFP+ can support Fibre Channel, 10GbE, SONET, OTN, and other communication standards. The SFP+ is similar in size to the SFP connector. And the primary difference between an SFP and a SFP+ is their transmission speed. It is noticeable that SFP/SFP+ are both copper and optical.

SFP28 Connector–The Third Generation of SFP Connector

As the third generation of SFP interconnect systems, the SFP28 (Small Form-Factor Pluggable 28) is designed for 25G performance specified by the IEEE 802.3by. The SFP28 connector delivers increased bandwidth, superior impedance control with less crosstalk compared to the SFP10. SFP28 can be sorted into SFP28 SFP-25G-SR and SFP-25G-LR. The former is designed to transfer data over short distance (up to 100m over MMF) while the latter is suitable for long distance transmission (up to 10 km over SMF). Utilizing 25GbE SFP28 leads to a single-lane connection similar to existing 10GbE technology, however it can deliver 2.5 times more data, which enables network bandwidth to be cost-effectively scaled in support of next-generation server and storage solutions.

Are the SFP, SFP+ and SFP28 Products Backward Compatible?

In most cases the connector and cable assembly are all backward compatible – an SFP+ connector is a direct replacement for an SFP connector to ensure simple upgrade to customer systems. As these are standard products, the cable assembly will also be compatible between the systems – an SFP copper cable assembly can be inserted to an SFP+ cage and mate with a SFP+ connector on the board.

Then how about the new SFP28 product? Since transceivers with various SFP connector types have become an important constituent of data communication network, compatibility issue of SFP28 and SFP+ is controversial among many subscribers. Here is a typical topic from Reddit, and it says like “For a project we’re looking to purchase some nexus 93180YC-EX ToRs for 25Gb+ down to the compute nodes. Cisco states that the downlink 25Gb ports are also 10Gb capable, but one can only really assume that means that the port is compatible with SFP+ optics too. Cisco’s SFP+ compatibility matrix appears to support that claim, however just curious if any of you have any SFP28 experience yet to confirm?”

The answer is definitely “yes”. SFP28 adopts the same form factor as SFP+, just running at 25 Gb/s instead of 10Gb/s, which offers better performance and higher speed. Besides, the pinouts of SFP28 and SFP+ connectors are mating compatible. Therefore, SFP28 connector is backwards compatible with SFP+ ports. That is to say, an SFP28 can be plugged into an SFP+ port and vice versa, but plugging an SFP+ into an SFP28 port would not get you 25Gb/s data rates.

Conclusion

SFP28 vs SFP+ vs SFP connector? Have you made clear which one to choose? Whether choosing SFP or SFP+ depends on your switch types. If your switch port only supports 1G, you can only choose the 1000BASE SFP (eg.MGBSX1). If it is a 10G switch, it depends on the speed and distance you require. When choosing between SFP28 and SFP+, it all depends on the transmission data rates you need. The SFP28 aims to build 25GbE networks that enables equipment designers to significantly reduce the required number of switches and cables. Thus when considering reduced facility costs related to space, power and cooling, the SFP28 would be the optimal choice for you.

Originally published at http://www.fiber-optic-tutorial.com/sfp-connector-sfp-connector-sfp28-connector.html

DWDM Solutions for Arista 7500E Series Switches

Nowadays, the deployment of DWDM solution has been hotly debated in many enterprise networks, especially in the new Lay2 and Lay3 equipment like Arista 7500E series switches. For many enterprises, DWDM network solutions are undoubtedly the best choices of action, because they can provide a scalable and elastic solution for the enterprise that offered high bandwidth and data separation. This article will demonstrate DWDM solutions to Arista 7500E switches which are the foundation of two-tier open networking solutions for cloud data centers.

Analysis of DWDM System

DWDM (Dense Wavelength Division Multiplexing) is a technology allowing high throughput capacity over longer distances commonly ranging between 44-88 channels and transferring data rates from 100 Mbps up to 100 Gbps per wavelength. For intra-datacenter solutions, an endpoint connection often uses multimode (850 nm) for short ranges and single mode (1310 nm) for longer ranges. The DWDM node converts this local connection to a channelized frequency or wavelength, which is then multiplexed with other wavelength and transmitted over a single fiber connection.

A key advantage of DWDM is that it’s bitrate independent. DWDM-based networks can transmit data in IP, ATM, SONET, SDH and Ethernet. Therefore, DWDM systems can carry different types of traffic at different speeds over an optical channel. Voice transmission, email, video and multimedia data are just some examples of services which can be simultaneously transmitted in DWDM systems.

Arista 7500E 100G DWDM Line Card

With full support for Layer2 and Layer3 protocols, Arista 7500E series switch is the ideal option for the network spine for two tier data centers applications. Arista 7500E especially provides the perfect resolution for high bandwidth Metro and long-haul DCI solutions with the 6-port DWDM line card. It has great advantage to migrate from existing 10G DWDM to 100G coherent line side modules. The 7500E series DWDM line card provides six 100G ports with coherent 100G tunable optics, which enables customers to connect directly into existing WDM MUX module without the need to add transceivers, which can save cost and space to a large extent. The coherent optics use C-band region wavelengths and offer a cost efficient solution for up to 96 channels of 100Gb over a single dark fiber pair.

Use Cases for Arista 7500E DWDM Card

• Less Than 80 km Dark Fiber Connection
  For distance less than 80 km, Arista 7500E switch with DWDM line cards can directly terminate a dark fiber connection with a pair of passive DWDM Mux, thus achieving a point-to-point connection between two locations.

• Between 80 km and 150 km Connection
  For distance greater than 80 km but less than 150 km, losses occurred during the process of transmission should be considered. In order to boost the power level, an EDFA (Erbium Doped Fiber Amplifier) is used to gain flatness, noise level, and output power, which is typically capable of gains of 30 dB or more and output power of +17 dB or more. With the use of EDFA, the signal can be boosted into a certain power level, thus achieving distances of up to 150 km.

Conclusion

The Arista 7500E series DWDM solution offers a cost-effective solution for transporting scalable and massive volumes of traffic, and enhances the 7500E system by providing high performance 100G DWDM port density with the same rich features and dedicated secure encryption in compact and power-efficient systems. Enterprises can easily migrate existing metro and long-haul DWDM networks to add new 100G capacities, thus expanding Layer2 and Layer3 services.

Originally published at http://www.china-cable-suppliers.com/dwdm-solutions-arista-7500e-series-switches.html