Link Failure Reflection Parameter; Status Of The Sce 1000 After Abnormal Boot - Cisco SCE 1000 Installation And Configuration Manual

Chapter 3 Information About Topology
In a single SCE 1000 topology, the value of this parameter is determined by whether or not the link can
be completely cut when the SCE 1000 fails, or whether traffic flow should continue across the link in
spite of platform failure.
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Link Failure Reflection Parameter

The link failure reflection refers to the behavior of the SCE 1000 when one of the data links fails. Some
network redundant topologies require a layer 1 cutoff in order for the network element to recognize the
link failure and translate it into action (switch to redundant link). In this case, if one of the ports fails, it
must be reflected to the other port as well.
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Default value = no link failure-reflection
Note

Status of the SCE 1000 After Abnormal Boot

This parameter determines whether the SCE 1000 returns to normal operational state after a reboot
caused by fatal error or abnormal shutdown. In general, it is desirable that the SCE 1000 resume
operation, and as promptly as possible. However, in a redundant topology, a recovered SCE 1000 may
remain non-operational. In this case the platform that had been the backup and is currently active will
remain active.
The two options for this parameter are:
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Default value = Operational for all non-redundant systems.
Note
Must be explicitly configured for redundant topologies.
Note
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Cutoff mode is required for the following:
– Redundant inline topology.
– Non-redundant inline topology if value-added services are crucial and are more important than
maintaining connectivity.
Bypass mode is required for the following:
– Non-redundant inline topology if connectivity is crucial.
Link failure-reflection — When one data port link fails, the SCE 1000 forces the other port link
down as well. The port will be forced down as long as the first port link is down. When the
problematic port link goes up, the other port link will also be turned on again.
No link failure-reflection — Link failure is not reflected to the other port.
Operational—The status of the SCE 1000 after abnormal boot is operational. The platform
automatically resumes functioning in the defined operational link bypass mode.
Not Operational—The status of the SCE 1000 after abnormal boot is not operational. The platform
remains in the defined failure link bypass mode.
This option is to be used only in a redundant topology where a second, operational platform exists.
Cisco SCE 1000 2xGBE Installation and Configuration Guide
Link Failure Reflection Parameter
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