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Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-06
Chapter 3 Information About Topology
Information About Topology Considerations
Figure 3-4 SCE Platform Dual Link Receive-Only Topology
Note When implementing receive-only topologies with a switch, the switch must support SPAN functionality
that includes separation between ingress and egress traffic and multiple SPAN-ports destinations.
Information About Two Cascaded SCE 2000s For Dual Links
In this topology, two cascaded SCE 2000 s are used. This allows a fail-over solution, where in case of a
failure of one SCE 2000 the functionality that the SCE 2000 provides is preserved by the redundant
platform.
• Two Cascaded SCE 2000s: Inline Topology
Two Cascaded SCE 2000s: Inline Topology
This topology allows both control and monitoring functionality where redundancy is required and
“inline” connection is used. The two SCE 2000 s are cascaded, so the primary SCE 2000 processes the
traffic of the two links, while the secondary SCE 2000 only bypasses the traffic of its links to the primary
SCE 2000 for processing, and then bypasses the processed traffic back to the link. The two SCE 2000 s
also exchange keep-alive messages and subscriber state information.
LINK
RX
Cisco SCE 2000
Series
4xGBE
TX
RX
MM TX
LINK
RX
TX
RX
MM TX
LINK
RX
TX
RX
MM TX
LINK
RX
TX
RX
MM
TX
GBE-1
SUB LINE
NET
PWR B
STATUS
PWR A
BYPASS
GBE-2
SUB
LINE/CASCADE NET
Router
Optical
splitter
Router
Subscriber
92797
Network
Router
Optical
splitter
Link 1
Link 2
Router
Subscriber
Network