Net Optics 4 Station Bypass Switch w_Heartbeat - Manual (Page 8)

4
4 Station Bypass Switch with Heartbeat
Bypass Modes
The 4 Station Bypass Switch with Heartbeat bypasses the attached in-line
device when one of three events occurs:
• Power loss
• Link failure to the Switch segment
• Application failure to the Switch segment
Two LEDs on the front of a Bypass Switch segment 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 traffic through the attached in-line device. When the switch is in
Bypass Enabled (ON) mode, the switch circuitry re-directs network traffic
around the in-line appliance. In Bypass Enabled mode Network Ports A and B
are connected (see Figure 4).
Figure 5: Bypass Enabled
When the switch is in Bypass Disabled (OFF) mode, the switch circuitry
sends network traffic through the in-line appliance. In Bypass Disabled mode,
Network Port A is connected to Monitor Port 1 and Network Port 2 is con-
nected to Monitor Port B (see Figure 5).
Figure 6: Bypass Disabled
®
Network Monitor
2 1 B A
Network Monitor
2 1 B A
Network Monitor
2 1 B A
Network Monitor
2 1
1
2
B A
Tx Rx Tx Rx Tx Rx Tx Rx
Single segment Bypass Mode Enabled (ON)
®
Network Monitor
2 1 B A
Network Monitor
2 1 B A
Network Monitor
2 1 B A
Network Monitor
2 1
1
2
B A
Tx Rx Tx Rx Tx Rx Tx Rx
Single segment Bypass Mode Disabled (Off)