Dell PowerConnect B - MLXe 16 Hardware Installation Guide - Page 29

Router modules 1 High-speed switch fabric modules Generation 2 (G2) high-speed fabric (HSF) modules support wire-speed forwarding for all packet sizes, including jumbo frames. HSF modules are supported on PowerConnect B-MLXe routers and are interoperable with all existing interface modules. HSF modules are hot-swappable, which allows you to install or replace them while the system is powered up and running. Power supplies PowerConnect B-MLXe routers support the following power supply options: • 4-slot router: Ships with one power supply, but can accommodate three AC power supplies (one required and two redundant). To equip your router for redundancy, you must purchase one or two additional power supplies. • 8-slot router: Accommodates four AC power supplies (two required and two redundant). Because power is supplied over a common power bus, any power supply installed in addition to the two required will provide backup for any supply that fails. For full redundancy for both of the required power supplies, you must add two additional power supplies. • 16-slot router: Accommodates eight AC power supplies (four required and four redundant). Because power is supplied over a common power bus, any power supply installed in addition to the four required will provide backup for any power supply that fails. For full redundancy for all of the required power supplies, you must add four additional power supplies. For power supply specifications, refer to "Power specifications" on page 175. Power supplies provide power to all router components, share the workload equally, and report status to the management module. If the management module detects that a power supply has failed or overheated, the management module redistributes the workload of the failed power supply to the remaining power supplies. Power supplies have three LEDs on the faceplate. These LEDs provide status for input power, output power, and notification of alarms that have been sent. If the input power and output power LEDs are on (a steady green), the power supply is providing power to the router components. For more information about the power supply LEDs, refer to the AC power supply sections in Table 27 on page 207. NOTE After a power supply is removed from a router, the software determines if there is enough power to operate all of the interface modules. If it determines that there is not enough power, some interface modules will be powered off. DANGER Power supplies are hot-swappable, which means they can be removed and replaced while the router is powered on and running. However, Dell recommends that you disconnect a power supply from its power source before removing and replacing the supply. The 4-, 8-, and 16-slot PowerConnect B-MLXe Hardware Installation Guide 17 53-1002111-01