2-8
Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
OL-16478-02
Chapter 2 Introduction to the Cisco SCE8000 Platform
The Cisco SCE8000 Optical Bypass
The Cisco SCE8000 Optical Bypass
• Optical Bypass Functionality, page 2-9
• Optical Bypass Module (OPB-SCE8K), page 2-9
The Cisco SCE8000 platform optical bypass module preserves the service provider 10GBE links under
all circumstances. At power failure the bypass is automatically activated. It can also be activated by the
Cisco SCE8000 software.
The Cisco SCE8000 platform already includes an internal electrical bypass, but it is strongly
recommended to use the optical bypass module for addressing the following scenarios:
• During platform reboot (SW reload)—If the external bypass module is not used, there is a 5-second
period (at most) during which the link is forced down (cutoff functionality).
Tab le 2- 6 SPA Po rt s
Port Quantity Description Connect This Port To…
10 GBE Line
port
1 on each SPA Any one of the following:
• XFP
XFP-10GLR-OC192SR
(10km)
• XFP-10GER-OC192IR
(40km)
• XFP-10GZR-OC192LR
(80km)
• XFP-10G-MM-SR
(200m)
CLI designation: interface
TenGigabitEthernet 3/0/0,
3/1/0/, 3/2/0, 3/3/0.
Any one of the following:
• Subscriber side network
component
• Network side network
component
• Optical bypass 10GBE line
port
• 10GBE line port of a
cascaded SCE8000 platform
• EtherChannel port of a
Cisco 7600 Series router
(MGSCP topology)
Refer to Connecting the Line
Ports to the Network,
page 6-1for further information.
Table 2-7 SPA LEDs
LEDs Description
Active/Link (1) • Green —Port is enabled by software and the link is up.
• Amber — Port is enabled by software and the link is down.
• Unlit — Port is not enabled by software.
Status (2) The Status LED indicates the operational status of the SPA module, as
follows:
• Green — SPA is ready and operational.
• Amber — SPA power is on and good, and SPA is being configured.
• Off — SPA power is off.