Net-optics Optical Bypass Switch w_Heartbeat Manual de usuario descargar pdf (Pagina 8)

Optical Bypass Switch with Heartbeat

Bypass Modes

The Optical Bypass Switch with Heartbeat bypasses attached in-line device

when one of three events occurs:

• Power loss to the switch

• Link failure

• Application failure

Two LEDs on the front of the Optical Bypass Switch indicate whether the

switch is bypassing the connected appliance or not. When the Bypass ON

indicator is illuminated, the bypass switch has not received the heartbeat

packet as expected and is in Bypass Enabled mode. When the Bypass OFF

indicator is illuminated, the bypass switch is in Bypass Disabled mode and is

sending trafc through the attached in-line device.

When the switch is in Bypass Enabled (ON) mode, the switch circuitry

re-directs network trafc around the in-line appliance. In Bypass Enabled

mode Network Ports A and B are connected (see Figure 4).

Figure 4: Bypass Enabled

When the switch is in Bypass Disabled (OFF) mode, the switch circuitry

sends network trafc through the in-line appliance. In Bypass Disabled mode,

Network Port A is connected to Monitor Port C and Network Port B is con-

nected to Monitor Port D (see Figure 5).

Figure 5: Bypass Disabled

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Optical Bypass Switch

LASER

CAUTION!

BYPASS ON OFF

ACT

LINK

B 1 2A

OUT IN OUT IN OUT IN OUT IN

Network Monitor

A B 1 2

Tx Rx Tx Rx Tx Rx Tx Rx

Bypass Mode Enabled (ON)