| Application Examples | Enterprise Application | Power Over Ethernet |

| Terms Used By This Section | End Span | Midspan |



Foundry Networks fes 2402

Full Layer 3 multiprotocol routing features include the following:

 Hardware-based IP and IPX routing
 AppleTalk
 RIPv1 and RIPv2
 OSPF
 Multicast routing (including PIM-SM/DM, IGMPv2, and DVMRP)
 Standard and Extended ACLs
 Virtual Router Redundancy Protocol (VRRP) and VRRP-Enhanced (VRRPE)
 For a complete list of software features supported on the FES, FES X-Series, or FWS X-Series, including how to configure them, see the software release notes and the Foundry Switch and Router  Installation and Basic Configuration Guide.

Application Examples

This section illustrates how the Foundry Networks FES, FES X-Series, and FWS X-Series product families fit into the enterprise network, and how the FES X-Series and FWS X-Series 10 Gigabit Ethernet switches can fit into a Metropolitan Area Network.

FES2402, FES4802, and FES9604

The FastIron Edge Switches 2402, 4802, 9604, can be deployed within the enterprise network as wiring closet switches, enabling multilayer switching to desktops, workgroups, and data centers or server farms. All of these devices provide high port density within a stackable form factor.

The FES2402 has 24 10/100 Base-T ports and two copper and fiber Gigabit Ethernet ports. Two of the ports can be active simultaneously, providing redundant 1 Gb/sec links to a server or a backbone uplink. The FES4802 has 48 10/100 Base-T ports and two copper and fiber Gigabit Ethernet ports. Two of the ports can be active simultaneously to provide redundant 1 Gb/sec links to a server or a backbone uplink. The FES9604 has 96 10/100 Base-T ports and four copper and fiber Gigabit Ethernet ports. Four of the Gigabit Ethernet ports can be active simultaneously. The FES9604 is the alternative to a chassis-based switch in wiring closets. The FES2402-POE and FES4802-POE wiring closet switches provide additional support for both non-POE and POE devices, providing the means for integrating data, voice, and video over existing Ethernet cables. For more information about POE devices, see the section "Power over Ethernet".

The FES X-Series and FWS X-Series provide high port density within a stackable form factor.

You can deploy the FES and FWS X-Series devices within an enterprise network. With 10 Gigabit Ethernet uplinks (optional) for LAN PHY, you can deploy the FES and FWS X-Series within a Metropolitan Area Network (MAN). This section provides topology examples.

Enterprise Application

You can deploy the FES X-Series and FWS X-Series family of switches within the enterprise campus network, providing Gigabit over Copper (GoC) aggregation to: the desktop the network Distribution Layer the service provider data center or server farms - for high-end server, cluster computing, and network-attached storage The FESX424 and FWSX424 have four Fiber uplink ports and 24 10/100/1000 Copper ports. Similarly, the FESX448 and FWSX448 have four Fiber uplink ports and 48 10/100/1000 Copper ports. One port out of the first four Copper ports or the four Fiber ports can be active at a time (see "10/100/1000 Mbps Ports"). You can optionally install a one-port or two-port 10 Gigabit Ethernet module, enabling you to bring 10 Gigabit Ethernet (GbE) from the edge of the network to the core, powered by Foundry's BigIron MG8, as shown in Figure 2.4.

Power over Ethernet

This section provides an overview of the requirements for delivering power over the LAN, as defined by the Institute of Electrical and Electronics Engineers Inc. (IEEE) in the 802.3af specification.

Foundry's FES2402-POE and FES4802-POE devices provide Power over Ethernet (POE), compliant with the standards described in the IEEE 802.3af specification for delivering in-line power. The 802.3af specification defines the standard for delivering power over existing network cabling infrastructure, enabling multicast-enabled full streaming audio and video applications for converged services, such as, Voice over IP (VoIP), WLAN access points, IP surveillance cameras, and other IP technology devices.

POE technology eliminates the need for an electrical outlet and dedicated UPS near IP powered devices. With power sourcing devices, such as Foundry's FES2402-POE and FES4802-POE, power is consolidated and centralized in the wiring closets, improving the reliability and resiliency of the network. Because POE can provide power over Ethernet cable, power is continuous, even in the event of a power failure.

Terms Used in This Section

The following terms are introduced in this section:

Power sourcing device/equipment - This is the source of the power, or the device that integrates the power onto the network. Power sourcing devices/equipment have embedded POE technology. In this case, the power sourcing devices are Foundry's FES2402-POE and FES4802-POE. IP powered device or Power consuming device - This is the Ethernet device that requires power and is situated on the other end of the cable opposite the power sourcing equipment. Methods for Delivering POE There are two methods for delivering power over the network, as defined in the 802.3af specification:

Endspan - Power is supplied through the Ethernet ports on a power sourcing device. Power is carried over live wire pairs that deliver data. With the Endspan solution, four wires are used to deliver data and power over the network. Midspan - Power is supplied by an intermediate power sourcing device placed between the switch and the powered device. Power is carried over the spare twisted pairs of wires. With the Midspan solution, eight wires are needed to deliver data and power over the network. With both methods, power is transferred over four conductors, between the two pairs. 802.3af-compliant powered devices are able to accept power from either pairs.

Foundry's FES2402-POE and FES4802-POE devices use the Endspan method, compliant with the 802.3af standard.

The Endspan and Midspan methods are described in more detail in the following sections.

Endspan

The POE Endspan method uses the Ethernet switch ports on power sourcing equipment, such as Foundry's FES2402-POE and FES4802-POE, which have embedded POE technology, to deliver power over the network.

With the Endspan solution, four wires deliver data and power over the network. Specifically, power is carried over the live wire pairs that deliver data, as illustrated in Figure 2.6. When using the same live wire pairs that deliver data, different frequencies enable power and data signals to traverse the same pairs of wires. Since data and power travel over different frequencies, the integrity of the data signals is not effected.

Midspan

The POE Midspan solution uses an intermediate device, usually a powered device, to inject power into the network. The intermediate device is positioned between the switch and the powered device and delivers power over the network using the spare pairs of wires. The intermediate device has multiple channels (typically 6 to 24), and each of the channels has data input and a data plus power RJ-45 output connector.

FES Series Instruction Manual