Table of Contents
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Chapter 10
Redundancy and Fail-Over
How to Configure Forced Failure
Use the following commands to force a virtual failure condition, and to exit from the failure condition
when performing an application upgrade. (See
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How to Force a Virtual Failure Condition
From the SCE(config if)# prompt, type
Step 1
Forces the SCE platform into a virtual failure state.
How to Exit a Virtual Failure Condition
Step 1
From the SCE(config if)# prompt, type
Exits from the virtual failure state.
Hot Standby and Fail-over
The fail over solution requires two SCE platforms connected in a cascade manner.
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Hot Standby
In fail over solution, one of the SCE platforms is used as the active SCE platform and the other is used
as the standby. Although traffic enters both the active and the standby SCE platforms, all traffic
processing takes place in the SCE platform which is currently the active one. The active SCE platform
processes the traffic coming on both links, its own link and the link connected to the standby SCE
platform, as follows
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OL-7827-12
How to Force a Virtual Failure Condition, page 10-5
How to Exit a Virtual Failure Condition, page 10-5
Hot Standby, page 10-5
Fail-over, page 10-6
Failure in the Cascade Connection, page 10-7
Installing a Cascaded System, page 10-7
All traffic entering the active SCE platform through its traffic ports is processed in that SCE platform
and then forwarded to the line.
All traffic entering the standby SCE platform through its traffic ports is forwarded through the
cascade ports to the active SCE platform where it is processed, and then returned to the standby SCE
platform through the cascade ports to be forwarded to the original line from which it came.
Managing Application Files, page
force failure-condition
no force failure-condition
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
How to Configure Forced Failure
3-9.)
and press Enter.
and press Enter.
10-5
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