Tag Archives: network switch

VXLAN Enabled Network Switch: What Is the Benefit?

FacebookTwitterGoogle+LinkedInRedditTumblrShare

VXLAN (Virtual Extensible Local Area Network) technology has attracted much attention these days in networking industry – since traditional VLAN links proven insufficient to cope with rigid requirements of cloud providers. Network switch with VXLAN capability is proposed to extend VLAN and overcome the limited scalability posed by VLAN. The VXLAN-enabled Ethernet switch provides layer 2 connectivity extension across the layer 3 boundary, enabling large-scale virtualized and multitenant data center designs over a shared common physical infrastructure. So it is the right time to enable VXLAN to network switch? How to get a decent VXLAN switch? We try to shed some lights on these issues.

What Is VXLAN?

VXLAN is a network virtualization scheme that enables users to create a logical network for virtual machines (VMs) across different networks. And it allows users to create a layer 2 network on top of layer 3 through encapsulation. In this way, you could potentially create 16 million networks using VXLAN – a lot more compared to the 4096 VLANs. VXLAN uses Layer 3 multicast to support the transmission of multicast and broadcast traffic in the virtual network, while decoupling the virtual network from the physical infrastructure. The following picture illustrates how VXLAN works.

what is vxlan

VXLAN gateway: A VXLAN gateway bridges traffic between VXLAN and non-VXLAN environments by becoming a virtual network endpoint. For example, it can link a traditional VLAN and a VXLAN network

VXLAN segment: A VXLAN segment is a Layer 2 overlay network over which VMs communicate. Only VMs within the same VXLAN segment can communicate with each other.

VNI: The Virtual Network Identifier (VNI), also referred to as VXLAN segment ID. The system uses the VNI, along with the VLAN ID, to identify the appropriate tunnel.

VTEP: The VXLAN Tunnel Endpoint (VTEP) terminates a VXLAN tunnel. The same local IP address can be used for multiple tunnels.

VXLAN header: In addition to the UDP header, encapsulated packages include a VXLAN header, which carries a 24-bit VNI to uniquely identify Layer 2 segments within the overlay.

What Makes a Good VXLAN Network Switch?

Network switch is a major building block in data transmission. Compared with traditional Ethernet switch, a VXLAN network switch generally possesses benefits like improved scalability (delivers a scale version of layer 2 network on highly scalable and proven layer 3 networks) & agility (provides VM ready networking infrastructure). VXLAN capable network switch also offers multiple solutions for private, public, & hybrid cloud networks. Moreover, network switch of this type also delivers higher programmability: it can work with network controllers and cloud orchestration stack such as OpenStack. You have account for at least the following aspects when choosing a VXLAN capable network switch.

    • Look for right ASIC.

    -Packets per second. A 32×100 GbE switch will have 4.47 billion packet per second (with all sort of packet size), make sure your vendor has that covered.

   -Latency. If this matters to you, 300 Nano seconds latency at all packet sizes is pretty easily available if you are looking for it.

    -Micro burst absorption ability.

   -Fairness on how the buffers are shared between ports.

  • Look for right scale. Considering the number of Layer 3 route a VXLAN network switch can support, the VXLAN VNI scale and the VTEP scale.
  • Open Networking. Look for a network switch that supports open networking and can give you disaggregated options if needed. In short, look for a vendor that can support multiple OS options.

FS.COM VXLAN Enabled Network Switch Solution

FS.COM offers a broad product line of network switches with the data rate spanning 1G to 100G. Among which the 100Gb switch S5850-48S2Q4C and S8050-20Q4C are Ethernet switches that support VXLAN function. S5850-48S2Q4C features 48 10G SFFP+ ports and 6 hybrid 100G uplink slots, while S8050-20Q4C has 20 40G QSFP+ ports and 4 100G QSFP28 ports. Both of the VXLAN network switches are traditional L2/L3 switches with advanced features including MLAG, VXLAN, IPv4/IPv6, SFLOW, SNMP etc, which is ideal for traditional or fully virtualized data center.

vxlan enabled network switch

The following diagram summarizes the feature sets of these VXLAN enabled network switches.

Port Attributes
S5850-48S2Q4C
S8050-20Q4C
Switch Class
Layer2/3, data center, Metro
Layer2/3, data center, Metro
10GbE SFP+ Ports
48
4 (Combo)
40GbE QSFP+ Ports
2
20
100GbE QSFP28 Ports
4
4
Max. 10GbE Density
72
96
Max. 40GbE Density
6
24
Max. 100GbE Density
4
4
Switch Fabric Capacity
1.92Tbps
2.4Tbps
Non-blocking Bandwidth
960Gbps
1.2Tbps
Forwarding Rate
1200Mpps
1200Mpps
Latency
612ns
612ns
Jumbo Frame
9600 Bytes
9600 Bytes
Typical/Max Power Draw
160W/200W
120W/160W

VXLAN based network switch has been accepted as a better solution with evident benefits, including sufficient links and capacity to handle massive traffic in cloud environment, the ability to stretch L2 network over a L3 network, and unsurpassed reliability and scalability. FS.COM offers professional and cost-efficient network switch solutions for enterprise networks and data centers, for more details, please contact us via sales@fs.com.

How to Set up NVR with a PoE Switch?

Security is paramount both in life and business, hence an increasing number of people are protecting their homes and business with surveillance systems mounted around their property. NVR (Network Video Recorder) serves as the nerve of a sophisticated security – it provides constant coverage of your property and allows you to view in real time with crystal-clear, high-resolution imagery. Then how to set up a NVR with your network devices to reap the great benefit it brings? We will illustrate common NVR Setup with a PoE switch.

What Is NVR?

A NVR consists of a computer and special video management software. It is a true digital system that records the digital images or videos received over the network onto a hard disk or other storage device. So you could view, playback, and download recordings when needed. Usually based on Windows or Linux environments, a NVR usually has a user friendly graphical user interface, flexible recording, playback capability, intelligent motion detection and camera control capability. Remote access is also available with NVR, and other benefits include ease of installation and usage, the capability of handling large amounts of video streams. There are a few configuration options for setting up a NVR, among which with network switch such as PoE switch is gaining increasingly recognition.

Basic NVR Setup: With PoE Switch

Unlike standard network switch, a PoE switch is capable of delivering data and power simultaneously through an Ethernet cable. This type of switch will act as a hub but can also supply power to POE compatible devices such as IP security cameras, without the need for an external power source or extra power wires. This makes for less installation cost and cabling complexity – you can handle your power and video over a single CAT5 cable. Here we use FS 8 port PoE switch as an example to show how to connect your NVR to a PoE switch, just perform the following steps:

nvr setup with poe switch

  • Connect an Ethernet cable from the LAN port on the PoE switch to your router. Connect the power cable to the PoE switch to a power outlet.
  • Connect IP cameras to ports #1 – #8 on the PoE switch using the Ethernet cables. The PoE switch will provide power and video transmission the same way your NVR does.
  • You must add the cameras to your NVR to view the cameras and enable recording. To do this, follow the steps in your NVR’s instruction manual.
NVR Setup With PoE Switch: How to Get More Ports?

It happens sometimes that you want to add more ports to the network, but cannot justify the price to replace a higher-density switch. Here we offer you a cost-effective solution by leveraging some network components at hand: a modem/router combo – the connection between your internal devices and the outside (Internet), and a hub.

nvr setup with ip camera

  • Run a CAT5 cable (shown in blue) to connect your cameras to the ports of a PoE switch. The POE switch will act as a HUB to connect them to the local network.
  • Connect a 8-port hub to your router, then link the PoE switch with an open port on the hub. In this way, the other 7 ports are available for adding more devices.
  • Plug your NVR into an open port on your router. Now your cameras and your NVR are all on the same network. With some minor configuration (port forwarding), you can access your NVR remotely since it is plugged into your modem/router.
Conclusion

NVR / IP camera setup necessitates the use of an external PoE switch to simplify or extend the wiring of your installation. Sometimes, a router and a hub are required to get extra port to expand your system. Ever confused by PoE switch connectivity issues? Don’t hesitate to connect FS.COM via sales@fs.com to find more solutions!

Cisco WS-C2960X-24PS-L vs WS-C2960S-24PS-L

A network switch is ubiquitous in data center: it functions as a multi-port network hardware device that bridges and routes data across multiple devices and corporate network segments. Cisco is one of the most famous and reliable switch vendors throughout the world. Among its dazzling switch product line, WS-C2960X-24PS-L and WS-C2960S-24PS-L are two Gigabit Ethernet switches that optimal for enterprise-class access for campus and branch applications. Merely judging from their physical appearance, these switches are nearly the same: configured with 24 10/100/100 Ethernet interface and 4 SFP uplinks. So when it comes to WS-C2960X-24PS-L vs WS-C2960S-24PS-L, what the differences is?

WS-C2960X-24PS-L vs WS-C2960S-24PS-L

As a member of Cisco Catalyst 2960-X series, WS-C2960X-24PS-L includes a single fixed power supply and are available with either the Cisco IOS LAN Base or LAN Lite feature set. It is designed for operational simplicity to lower total cost of ownership, enabling scalable, secure and energy-efficient business operations with intelligent services and a range of advanced Cisco IOS Software features. WS-C2960X-24PS-L PoE switch also support Power over Ethernet Plus (PoE+) with up to 740W of PoE budget.

WS-C2960X-24PS-L vs. WS-C2960S-24PS-L

As for WS-C2960S-24PS-L, however, belongs to Cisco Catalyst 2960-S series. It enables reliable and secure business operations with lower total cost of ownership through a range of innovative features including FlexStack stacking with 20 Gbps of stack throughput (optional), Power over Ethernet Plus (PoE+) up to 740W, and Cisco Catalyst Smart Operations. WS-C2960S-24PS-L is ideal for deploying cost-effective wired connectivity in traditional desktop workspace environment, and enforcing basic security policies to limit access to the network and mitigate threats.

WS-C2960S-24PS-L

The linecard configuration of WS-C2960X-24PS-L vs WS-C2960S-24PS-L is nearly the same: both have 24 10/100/1000 Ethernet ports and 4 SFP uplink interface. And they are all stackable switches. The difference is that the switching capacity of WS-C2960X-24PS-L is slightly larger than WS C2960S-24PS-L, as shown in the following chart.

Model 10/100/1000 Ethernet ports Uplink interfaces Cisco IOS software image Available PoE power Switching capacity Stackable
WS-C2960X-24PS-L 24 4 SFP LAN Base 370 W 216 Gbps Optional
WS-C2960S-24PS-L 24 4 SFP LAN Base 370 W 176 Gbps Optional
WS-C2960X-24PS-L vs WS-C2960S-24PS-L: Connectivity Solution

Both configured with 24 10/100/1000Base Ethernet interface and 4 SFP uplinks, WS-C2960X-24PS-L vs WS-C2960S-24PS-L supports SFP transceivers to be fitted in the ports. The following chart show all the compatible SFP modules provided by FS.

WS-C2960X-24PS-L Compatible SFP Module
Product ID Description
11795 Cisco GLC-BX-D Compatible 1000BASE-BX-D BiDi SFP 1490nm-TX/1310nm-RX 10km DOM Transceiver
11802 Cisco GLC-BX-U Compatible 1000BASE-BX-U BiDi SFP 1310nm-TX/1490nm-RX 10km DOM Transceiver
22139 Cisco GLC-LH-SMD Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM Transceiver
20358 Cisco GLC-EX-SMD Compatible 1000BASE-EX SFP 1310nm 40km DOM Transceiver
11779 Cisco GLC-ZX-SMD Compatible 1000BASE-ZX SFP 1550nm 80km DOM Transceiver
11773 Cisco GLC-T Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver
11773 Cisco GLC-TE Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver
11779 Cisco GLC-ZX-SM Compatible 1000BASE-ZX SFP 1550nm 80km Transceiver
11774 Cisco GLC-SX-MM Compatible 1000BASE-SX SFP 850nm 550m Transceiver
47241 Cisco CWDM-SFP-1470 Compatible 1000BASE-CWDM SFP 1470nm 80km DOM Transceiver
12672 Cisco GLC-GE-100FX Compatible 100BASE-FX SFP 1310nm 2km Transceiver for Gigabit Ethernet SFP Ports
11774 Cisco GLC-SX-MMD Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver
11775 Cisco GLC-LH-SM Compatible 1000BASE-LX/LH SFP 1310nm 10km Transceiver
WS-C2960S-24PS-L Compatible SFP Module
Product ID Description
11773 Cisco GLC-T Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver
11773 Cisco GLC-TE Compatible 1000BASE-T SFP Copper RJ-45 100m Transceiver
11774 Cisco GLC-SX-MM Compatible 1000BASE-SX SFP 850nm 550m Transceiver
11775 Cisco GLC-LH-SM Compatible 1000BASE-LX/LH SFP 1310nm 10km Transceiver
11779 Cisco GLC-ZX-SM Compatible 1000BASE-ZX SFP 1550nm 80km Transceiver
11779 Cisco GLC-ZX-SMD Compatible 1000BASE-ZX SFP 1550nm 80km DOM Transceiver
11795 Cisco GLC-BX-D Compatible 1000BASE-BX-D BiDi SFP 1490nm-TX/1310nm-RX 10km DOM Transceiver
11802 Cisco GLC-BX-U Compatible 1000BASE-BX-U BiDi SFP 1310nm-TX/1490nm-RX 10km DOM Transceiver
47241 Cisco CWDM-SFP-1470 Compatible 1000BASE-CWDM SFP 1470nm 80km DOM Transceiver
11774 Cisco GLC-SX-MMD Compatible 1000BASE-SX SFP 850nm 550m DOM Transceiver
11775 Cisco GLC-LH-SMD Compatible 1000BASE-LX/LH SFP 1310nm 10km DOM Transceiver
20358 Cisco GLC-EX-SMD Compatible 1000BASE-EX SFP 1310nm 40km DOM Transceiver
Conclusion

The switching capacity of WS-C2960X-24PS-L is larger than that of WS-C2960S-24PS-L, but they are both decent network switches that easy to operate. WS-C2960X-24PS-L vs WS-C2960S-24PS-L, the final decision should base on your specific networking environment. All the compatible SFP optical modules presented in the above chart are available at FS. FS manufactures a variety of high-standard optical transceivers, each of them are strictly tested for fully compatibility with the original brand. For more details, please visit www.fs.com or contact sales via sales@fs.com.

Compatible Transceivers for Cisco Catalyst 4948E Switch

Cisco Catalyst 4900 series switches were once the most widely deployed ToR (top-of-rack) switches in this industry. This post will introduce the detailed compatible transceivers information for Cisco Catalyst 4948E switch.

Cisco Catalyst 4948E

Port Information of Catalyst 4948E Switch
Cisco Catalyst 4948E switch is a one-rack-unit (1RU) fixed configuration network switch with 48 RJ45 ports of 10/100/1000M for downlink and 4 SFP/SFP+ ports of 1/10G for uplink on the front panel. The following picture shows the detailed port information of Cisco Catalyst 4948E switch.

Catalyst-4948E-F-ports-information

Downlink Connection for Cisco Catalyst 4948E Switch
The 48 ports on the front panel of Catalyst 4948E can support downlink of 10/100/1000M. The great advantage of these ports is that they can configure themselves to operate at the speed of the attached devices. If the attached devices do not support auto-negotiation, the speed and duplex parameters can be set explicitly. A network cable with a RJ-45 plug at both end can connect Cisco Catalyst 4948E switch to the downlink target devices.

Uplink Connection for Cisco Catalyst 4948E Switch
The four uplink SFP/SFP+ ports on Cisco Catalyst 4948E can support both copper and fiber optic transmission of 1G/10G by using different modules and cables. In addition, these ports can also support CWDM SFP transceivers and DWDM SFP transceivers. The following part will introduce the details about compatible transceivers for Cisco Catalyst 4948E switch.

Modules Connector & Cable
GLC-T (1000BASE-T) RJ45,Cat5
GLC-TE
GLC-SX-MM LC duplex, MMF
GLC-SX-MMD
GLC-LH-SM LC duplex, SMF
GLC-LH-SMD
GLC-EX-SMD
GLC-ZX-SM
GLC-ZX-SMD
CWDM SFP
DWDM SFP
GLC-BX-D LC simplex, SMF
GLC-BX-U
GLC-BX40-D-I
GLC-BX40-U-I
GLC-BX40-DA-I
GLC-BX80-U-I
GLC-BX80-D-I
Modules Connector & Cable
SFP-10G-LRM LC duplex, MMF
SFP-10G-SR
SFP-10G-SR-S
SFP-10G-LR LC duplex, SMF
SFP-10G-LR-S
SFP-10G-ER
SFP-10G-ER-S
SFP-10G-ZR
SFP-10G-ZR-S
DWDM SFP+
SFP-10G-BXD-I LC simplex, SMF
SFP-10G-BXU-I
SFP-10G-BX40D-I
SFP-10G-BX40U-I
SFP-H10GB-CU1M 10G SFP+ DAC Twinax Cable
SFP-H10GB-CU3M
SFP-H10GB-CU5M

Related Article: Cisco SFP-10G-SR: All You Need to Know

How to Choose SFP+ Transceivers for Cisco 4500 Series Switch

The Cisco 4500 series switches provide high performance, mobile, and secure user experiences through Layer 2-4 switching investments. Since they have a centralized forwarding architecture that enables collaboration, virtualization, and operational manageability through simplified operations, therefore, more and more people choose to use 4500 series switches in their network. As we know, once we use a network switch, we may use some transceiver modules. In this article, some SFP+ transceivers that supported for Cisco 4500 series switches will be introduced.

Cisco 4500 Series Switch Overview
Cisco 4500 series switches include 4500 Series and 4500E Series switches. Among, 4500 series include Catalyst 4503 Switch, Catalyst 4506 Switch, Catalyst 4507R Switch, Catalyst 4510R Switch. With forward and backward compatibility spanning multiple generations, the new Cisco Catalyst 4500E Series provides exceptional investment protection and deployment flexibility to meet the evolving needs of organizations of all sizes, which include Catalyst 4503-E Switch, Catalyst 4506-E Switch, Catalyst 4507R+E Switch and Catalyst 4510R+E Switch. SFP+ ports operate in full-duplex mode and are present on the WS-X4516-10GE and WS-X4013+10GE supervisors, as well as some line cards. These ports use the 10GBASE-SR, 10GBASE-LRM and 10GBASE-LR SFP+. SFP+ connectors vary with interface type and may use multimode fiber (MMF) or single-mode fiber (SMF) cable.

cisco 4500

Supervisor Engine for Cisco 4500 Series Switch
The Cisco supervisor engine is the brain of many of Cisco’s switches, which refers to specific modules that can be placed in a modular chassis. Cisco 4500 series and 6500 series switches both require supervisor engines to work. In fact, the transceivers type depends on the port type of supervisor engine. So, it’s necessary to identify the port type of your supervisor engines first. In following table, I display some supervisor engines that both supported for Catalys 4500 Series Switches and SFP+ transceivers. Please note that WS-X4516-10GE, WS-X4013+10GE, WS-X45-Sup6-E, WS-X45-Sup6L-E and WS-X4606-X2-E can also be used for X2 transceivers with CVR-X2-SFP10G converter.

Cisco Catalyst 4500 Series Supervisor Engine V-10GE
WS-X4516-10GE 2×10 Gigabit Ethernet (X2 or SFP+) or 4X1 Gigabit Ethernet (SFP)
Cisco Catalyst 4500 Series Supervisor Engine II-Plus-10GE
WS-X4013+10GE 2x10GE (X2 or SFP+) and 4×1 Gigabit Ethernet (SFP)
Cisco Catalyst 4500E Supervisor Engine 6-E And 6L-E
WS-X45-Sup6-E 2×10 Gigabit Ethernet (X2 or SFP+) or 4×1 Gigabit Ethernet (SFP), Console RJ-45, USB
WS-X45-Sup6L-E 2×10 Gigabit Ethernet (X2 or SFP+) or 4×1 Gigabit Ethernet (SFP), Console RJ-45
Cisco Catalyst 4500E Series Line Cards
WS-X4606-X2-E 6×10 Gigabit Ethernet (X2 or SFP+)
WS-X4712-SFP+E 12×10 Gigabit Ethernet (SFP+)
Cisco Catalyst 4500E Series Supervisor Engine 7-E And 7L-E
WS-X45-SUP7-E 4×10 Gigabit Ethernet uplinks (SFP+)
WS-X45-SUP7L-E 2×10 Gigabit Ethernet uplinks (SFP+) or 4×1 Gigabit Ethernet uplinks (SFP)
Cisco Catalyst 4500E Series Supervisor Engine 8-E And 8L-E
WS-X45-SUP8-E 8×10 Gigabit Ethernet uplinks (SFP+)
WS-X45-SUP8L-E 4×10 Gigabit Ethernet uplinks (SFP+) or 4×1 Gigabit Ethernet uplinks (SFP)

SFP+ Transceivers for Cisco 4500 Series Switch
According to Cisco 10-Gigabit Ethernet Transceiver Modules Compatibility Matrix, all supervisor engines mentioned above can support SFP-10G-SR, SFP-10G-LRM, SFP-10G-LR, SFP-10G-SR-S and SFP-10G-LR-S SFP+ transceivers. Besides, WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E can also support SFP-10G-ER, SFP-10G-ZR, SFP-10G-ER-S and SFP-10G-ZR-S SFP+ transceivers. All SFP+ transceievrs can be found in FS.COM.

WS-X4516-10GE, WS-X4013+10GE, WS-X45-Sup6-E, WS-X45-Sup6L-E, WS-X4606-X2-E, WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E
SFP-10G-SR Cisco SFP-10G-SR Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16
SFP-10G-LRM Cisco SFP-10G-LRM Compatible 10GBASE-LRM SFP+ 1310nm 220m DOM Transceiver, $ 34
SFP-10G-LR Cisco SFP-10G-LR Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceiver, $ 34
SFP-10G-SR-S Cisco SFP-10G-SR-S Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver, $ 16
SFP-10G-LR-S Cisco SFP-10G-LR-S Compatible 10GBASE-LR SFP+ 1310nm 10km DOM Transceiver, $ 34
WS-X4712-SFP+E, WS-X45-SUP7-E, WS-X45-SUP7L-E, WS-X45-SUP8-E and WS-X45-SUP8L-E
SFP-10G-ER Cisco SFP-10G-ER Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 180
SFP-10G-ZR Cisco SFP-10G-ZR Compatible SFP+ 1550nm 80km DOM Transceiver, $ 400
SFP-10G-ER-S Cisco SFP-10G-ER-S Compatible 10GBASE-ER SFP+ 1550nm 40km DOM Transceiver, $ 180
SFP-10G-ZR-S Cisco SFP-10G-ZR-S Compatible 10GBASE-ZR SFP+ 1550nm 80km DOM Transceiver, $ 400

Related Article: Cisco SFP-10G-SR: All You Need to Know