Cisco SCE8000 GBE Installation And Configuration Manual page 49

Chapter 3 Cisco SCE8000 GBE Topology and Topology-Related Parameters
If the SCE8000 GBE platform fails, traffic flows through the optical bypass module, bypassing the
SCE8000 GBE , so that traffic on the link is maintained.
failure conditions.
Figure 3-6
In cascade configuration, installation of the optical bypass module is highly recommended.
Note
This optical bypass module can be added to link without altering the basic characteristics of the topology.
(The installation procedure and the actual connections are somewhat different when the optical bypass
module is used, see
For more information regarding the external bypass module, refer to
Bypass, page
OL-19897-02
Optical Bypass Under Failure Conditions
Traffic GBE SPA 0
0/0–S
L0
0/1–N
OPB
0/2–S
L1
0/3–N
0/4–S
L2
0/5–N
OPB
0/6–S
L3
0/7–N
Cascade 10GBE
SPA 2
2/0-cascade
Optical Bypass Module Connectivity, page
2-10.
Figure 3-6 displays the optical bypass under
Network side
(upstream)
SCE8000 GBE
Subscriber side
(downstream)
6-5.)
Cisco SCE8000 GBE Installation and Configuration Guide
Link Continuity
The Cisco SCE8000 GBE Optical
3-9