Information About Topology Considerations; Sce Platform Configuration; Failure Detection Mechanism - Cisco SCE 1000 Installation And Configuration Manual

Information About Topology Considerations

Information About Topology Considerations

There are several issues that must be considered to arrive at the optimum configuration of the
topology-related parameters:
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SCE Platform Configuration

There are four topology-related parameters:
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Failure Detection Mechanism

Boot time diagnostics failure. When there is a failure in diagnostics testing at boot time the system will
remain in failure status.
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Cisco SCE 1000 2xGBE Installation and Configuration Guide
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Functionality—Will the system be used solely to monitor traffic flow, with report functionality only,
or will it be used for traffic flow control, with enforcement as well as report functionality?
Physical installation configuration—Will the SCE Platform be installed as inline? Or will the SCE
Platform use an optical splitter?
Redundancy—Must the system be designed to guarantee uninterrupted service? If so, there must be
a backup SCE Platform to assume operation in case of failure of the primary data link.
Link failure and recovery—How should the SCE Platform respond to platform failure and
subsequent recovery? Should traffic flow continue even though the unit is not operating, or be halted
until the platform is repaired/replaced? Should the unit actually resume operation when it is again
operational?
Connection mode—Can be Inline or Receive-only, depending on the physical installation of the SCE
1000:
May be configured via either the setup command or the connection-mode command.
Bypass mode when the SCE 1000 is not operational (on-failure)—This parameter determines
whether the system cuts the traffic or bypasses it when the SCE 1000 has failed.
May be configured via either the setup command or the connection-mode command.
Status after reboot caused by fatal error or abnormal shutdown—This parameter determines whether
the SCE 1000 returns to normal operational state after a failure.
May be configured via either the setup command or the failure-recovery operation-mode command.
Link failure reflection—This parameter determines the behavior of the system when there is a link
problem. In some topologies it is required that link failure on one port be reflected to the other port,
to allow the higher layer redundancy protocol in the network to function correctly.
May be configured via the link failure-reflection command only.
Boot time diagnostics failure. When there is a failure in diagnostics testing at boot time the system
will remain in failure status.
Chapter 3 Information About Topology
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