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Optical Bypass Switch
Figure 4.
Power Loss Bypass
The Optical Bypass Switch protects link integrity when the in-line appliance
loses power. When the Bypass Switch is receiving power it is in Bypass
Disabled (OFF ) mode. In Bypass Disabled mode the switch sends network
trafc through the connnected device.
When power to the Bypass switch fails, it enters Bypass Enabled (ON) mode
and network trafc bypasses the connected device until power to the switch is
restored.
Bypass Disabled Mode
Juniper Networks
IDP-1100
1
Firewall
Internet
Switch
Switch
Bypass Switch
Router
®
A
B B
www.netoptics.com
A
When the Bypass Switch is in Bypass Disabled
mode, all in-line traffic is routed through the
Juniper IDP appliance.
The Bypass switch is
receiving power from
the DC power supply.
2
Bypass Enabled Mode
Juniper Networks
IDP-1100
2
1
Firewall
Internet
SwitchSwitch
Bypass Switch
Router
®
.netoptics.com
A
B B
www
A
3
When the Bypass Switch is in Bypass Enabled
mode, all in-line traffic continues to flow on the
network link without being directed through the
Juniper IDP appliance
Because in-line traffic is no longer
flowing through the IDP, the appliance
may be removed and replaced without
downtime.
When there is no power to
the Bypass switch, it enters
Bypass Enabled mode.
Figure 3.