Topology-Related Parameters; Sce 2000 Configuration; Connection Mode Parameter - Cisco SCE 2000 4xGBE Installation And Configuration Manual

Chapter 3 Topology

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

There are four topology-related parameters:
Any of these parameters may be configured via either the setup command or the
connection-mode command.

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:
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When one SCE 2000 fails (depending on the type of failure) its link traffic is still bypassed
•
to the functioning SCE 2000 and processed there, so the traffic processing continues for
both the links.
• The bypass of the traffic through the failed SCE 2000 is configurable, and the user may
choose to always cutoff the line that goes through the failed SCE 2000. In this case network
redundancy protocols like HSRP are responsible for identifying the line cutoff and
switching all the traffic to go through the functioning SCE 2000.
Connection mode — Can be any one of the following, depending on the physical
•
installation of the SCE 2000 (Refer to
• Inline — single SCE 2000 inline
Receive-only — single SCE 2000 receive-only
•
Inline-cascade — two SCE 2000s inline
•
Receive-only-cascade — two SCE 2000s receive-only
•
• Physically-connected-links — In cascaded configurations, this parameter defines the
number of the link connected to this SCE 2000 (Refer to
Parameter (on page 3-10)).
It is applicable only in a cascade topology.
Priority — This parameter defines which is the primary SCE 2000 (Refer to
•
page 3-10)).
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
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.
Connection Mode Parameter
(on page 3-10)).
Cisco SCE 2000 4xGBE Installation and Configuration Guide
Physical Topologies
(on page 3-9)):
Physically Connected Links
Priority (on
3-9