958-000283-003, March 2005)

Table Of Contents

Switch features16

Initial machine load button

The IML/RESET button is shown in Figure 2 on page 15. When the IML/RESET button is pressed,

held for three seconds, and released, the switch performs an initial machine load that reloads the

firmware from FLASH memory. This operation is not disruptive to Fibre Channel traffic. If the button

is held for more than three seconds, the ERR LED blinks at twice the unit beaconing rate.

When the IML/RESET button is pressed and held for ten seconds, the switch performs a reset. After

three seconds, the ERR LED blinks at twice the unit beaconing rate. A reset is disruptive and resets

the:

• Microprocessor and functional logic for the CTP card and reloads the firmware from FLASH

memory.

• Ethernet LAN interface, causing the connection to the HAFM appliance to drop momentarily

until the connection automatically recovers.

• Ports, causing all Fibre Channel connections to drop momentarily until the connections

automatically recover. This causes attached devices to log out and log back in; therefore data

frames lost during switch reset must be retransmitted.

A reset should only be performed if a CTP card failure is indicated. As a precaution, the IML/RESET

button is flush mounted to protect against inadvertent activation.

SFP transceivers (Fibre Channel ports)

The Edge Switch 2/24 provides 24 Fibre Channel ports. A single-mode or multi-mode fiber optic

cable attaches to a port through a small form factor pluggable (SFP) transceiver. The SFP provides a

duplex LC interface, and can be detached from the switch port for easy replacement.

The following fiber optic transceiver types are available:

• Shortwave laser—Shortwave laser SFPs provide short-distance connections (2 to 500 meters)

through 50-micron or 62.5-micron multi-mode fiber.

• Longwave laser—Longwave laser SFPs provide long-distance connections (up to 10 kilometers)

through 9-micron single-mode fiber.

• Extended longwave laser—Two types of extended longwave laser transceivers provide

connections for transferring 2.125 Gbps data up to 20 kilometers or 35 kilometers through

9-micron single-mode fiber.

Port LEDs

Amber and green/blue LEDs to the left of each Fibre Channel port illuminate, extinguish, or blink to

indicate port status and port speed.

• Amber LED—illuminates if the port fails.

• Green/blue LED—illuminates green to indicate 1.0625 Gbps port operation. Illuminates blue to

indicate 2.125 Gbps port operation.