Cisco SFE2000P User Manual

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Cisco SCE 2000 4xGBE Installation and Configuration Guide
OL-7824-06
Chapter 3 Information About Topology
Information About Topology Considerations
Information About Topology-Related Parameters
Refer to the following sections to determine the correct values for all topology-related parameters before
beginning run the initial setup of the SCE 2000 .
• SCE 2000 Configuration
• Connection Mode Parameter
• Physically Connected Links Parameter
• Priority
• On-Failure Mode Parameter
SCE 2000 Configuration
There are four topology-related parameters:
• Connection mode — Can be any one of the following, depending on the physical installation of the
SCE 2000 (Refer to Connection Mode Parameter ):
– Inline — single SCE 2000 inline
– Receive-only — single SCE 2000 receive-only
– Inline-cascade — two SCE 2000 s inline
– Receive-only-cascade — two SCE 2000 s receive-only
• Physically-connected-links — In cascaded configurations, this parameter defines the number of the
link connected to this SCE 2000 (Refer to Physically Connected Links Parameter ).
It is applicable only in a cascade topology.
• Priority — This parameter defines which is the primary SCE 2000 (Refer to Priority ).
It is applicable only in a cascade topology.
• On-failure — This parameter determines whether the system cuts the traffic or bypasses it when the
SCE 2000 either has failed or is booting. It is not applicable to receive-only topologies (Refer to
On-Failure Mode Parameter ).
Any of these parameters may be configured via either the setupcommand or the
connection-modecommand.
Connection Mode Parameter
The connection mode parameter refers directly to the physical topology in which the SCE 2000 is
installed. The connection mode depends on two factors:
• Inline/Receive-only :
– Inline — The SCE 2000 resides on the data link between the subscriber side and the network
side, thus both receiving and transmitting packets.
– Receive-only — The SCE 2000 does not reside physically on the data link. Data is forwarded
to the SCE 2000 via an external switch. The SCE 2000 itself receives only and does not
transmit.
• Cascade — Indicates a two SCE 2000 topology where the SCE 2000 are connected via the cascade
ports.
The connection mode parameter is determined by the physical deployment of the SCE 2000 , as follows:

Cisco SFE2000P Specifications

General

Brand	Cisco
Model	SFE2000P
Category	Network Router
Language	English