6-3
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-07
Chapter 6 Cabling the Line Ports and Completing the Installation
Connecting the Line Ports to the Network
Note
Receive-only topologies can also be implemented using a switch. Such a switch must support SPAN
functionality that includes separation between ingress and egress traffic and multiple SPAN-ports
destinations.
Figure 6-2
Cabling Diagram for Single SCE Platform Single Link Receive-only Topology
The single link receive-only topology cabling is similar to that for single link inline, in that either the
first GBE link (first two ports) or the second GBE link (third and fourth ports) can be used, as illustrated
in the diagram above. The remaining pair of ports is unused.
Either port 1 or port 3 is used for connecting to the network element that is deployed on the subscriber
side of the SCE 2000 while port 2 or port 4 is used for connecting to the network element that is deployed
on the network side of the SCE 2000.
Dual Link: Single SCE 2000 Topologies
In this topology, one SCE 2000 is connected to two full duplex, GBE links. The SCE 2000 may be either
inline, to support both monitoring and traffic control functionality, or receive-only for traffic monitoring
functionality only.
When one SCE 2000 supports two links, the first two ports are connected to one link, while ports 3 and
4 are connected to the second link as follows;
•
Port 1: Link 1, Subscriber side
•
Port 2: Link 1, Network side
•
Port 3: Link 2, Subscriber side
•
Port 4: Link 2, Network side
As with the single link cabling, inline topologies require both Receive and Transmit fibers, while
Receive-only systems use only Receive fibers.
Note
Receive-only topologies can be implemented using either an optical splitter or a switch. If a switch is
used, it must support SPAN functionality that includes separation between ingress and egress traffic and
multiple SPAN-ports destinations.
The following two diagrams illustrate the connections for dual links, with a single SCE 2000 deployed
for both inline and receive-only topologies.
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
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
92784
Subscribers 1
Subscribers 2
Network 2
Network 1
OR
