Cisco SFE2000P User Manual

3-7
Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-06
Chapter 3 Information About Topology
Information About Topology Considerations
Figure 3-3 Single SCE Platform Single Link: Receive-Only Topology
When configuring the SCE 2000, an optical splitter topology is referred to as “receive-only” connection
mode.
Note that in an optical splitter topology, the SCE 2000 only enables traffic monitoring functionality.
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.
Dual Link: Receive-Only Topology
In this topology, one SCE 2000 is connected in receive-only mode to two full duplex, GBE links using
optical splitters. If 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 monitoring functionality as if asymmetrical routing were not occurring in the two links.
This installation supports monitoring functionality only, and is configured as “receive-only” connection
mode.
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
92796
Network

Cisco SFE2000P Specifications

General

Brand	Cisco
Model	SFE2000P
Category	Network Router
Language	English