Cisco 7000 Series - Installing an Optical Bypass Switch

3-20 Cisco 7010 Hardware Installation and Maintenance
Connecting Interface Cables
Figure 3-17 FDDI Dual Attach Network Connections, Single-Mode and Multimode
If you are connecting an optical bypass switch, proceed to the next section. Otherwise, proceed to
“Connecting the Console Terminal” in this chapter.
Installing an Optical Bypass Switch
An optical bypass switch is a device installed between the ring and the station that provides
additional fault tolerance to the network. If a FIP that is connected to a bypass switch fails or shuts
down, the bypass switch activates automatically and allows the light signal to pass directly through
it, bypassing the FIP completely. (See Figure 3-18 or Figure 3-19.) A port for connecting an optical
bypass switch is provided on the multimode/multimode FIP (CX-FIP-MM) and the
single-mode/single-mode FIP (CX-FIP-SS).
Figure 3-18 CX-FIP-MM Connection with Optical Bypass
Figure 3-19 CX-FIP-SS Connection with Optical Bypass
TX RX
PHY B PHY A
TX RX
Transmit
Receive
To single-mode
network
To multimode
network
H2810
FIP
Use multimode and
single-mode cables
for mixed-mode
configurations.
FC connectors (2)
MIC
Mixed-mode
configurations.
H2811
Optical bypass
control cable
Optical bypass
switch
A
B
PHY B
PHY A
Bypass operation
To
ring
FIP