Cisco SFE2000P Installation And Configuration Manual page 31

Chapter 3 Information About Topology
Single Link: Inline Topology
Typically, the SCE 2000 is connected in a full duplex GBE link between two devices (Router, BRAS,
etc.). When the SCE 2000 is installed as an inline installation, it physically resides on the data link
between the subscribers and the network.
Figure 3-1
PWR A PWR B STATUS
Subscriber
When configuring the SCE 2000 , an inline installation is referred to as "inline" connection mode.
Dual link: Inline Installation
In this topology, one SCE 2000 is connected inline in two full duplex, GBE links.
In case the two links are load-shared, asymmetrical routing might occur, and some of the flows may be
split, i.e. the upstream packets of the flow go on one link, and the downstream packets go on the other
link.
When installed in this topology, the SCE 2000 completely overcomes this phenomenon, and provides its
normal functionality as if asymmetrical routing were not occurring in the two links.
OL-7824-06
Single SCE Platform Single Link: In-line Topology
BYPASS
LINK RX TX
RX MM TX RX
GBE-1
SUB LINE NET
Port 1
subscriber
Router
Cisco SCE 2000
LINK RX TX LINK RX TX
MM TX RX MM TX
GBE-2
SUB LINE/CASCADE NET
Port 2
network
Router
Cisco SCE 2000 4xGBE Installation and Configuration Guide
Information About Topology Considerations
Series
4xGBE
LINK RX TX
RX MM TX
Network
3-5