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Chapter 4
Commands for the Cisco uBR10012 Router
show redundancy
To display the current redundancy status, use the show redundancy command in user EXEC or
privileged EXEC mode.
Syntax Description
clients
counters
history
states
Defaults
No default behavior or values
Command Modes
User EXEC, Privileged EXEC
Command History
Release
12.2(4)XF1
12.2(11)BC3
12.2(15)BC2
Usage Guidelines
The show redundancy command shows whether the PRE A slot or PRE B slot contains the active
(primary) Performance Routing Engine (PRE1) module, the status of the standby (secondary) PRE1
module, and the values for the standby PRE1 module's boot variables and configuration register. In
Cisco IOS Release 12.2(13)BC1 and later releases, it also shows the version of Cisco IOS software that
is running on the standby PRE module.
The show redundancy command always shows the correct location of the active PRE1 module. The
Note
other PRE slot will always be marked as Secondary, even if a standby PRE1 module is not installed.
Examples
This section contains examples of typical displays for each of the options that are available for the show
redundancy command.
Default Displays
The following example shows a typical display from the show redundancy command in Cisco IOS
Release 12.2(15)BC2 and later releases:
PRE A
OL-1581-08
show redundancy [clients | counters | history | states]
(Optional) Displays the Redundancy Facility (RF) client list.
(Optional) Displays RF operational counters.
(Optional) Summarizes RF history.
(Optional) Displays RF states for active and standby modules.
Modification
This command was introduced for the Cisco uBR10012 router.
The clients, counters, history, and states option were added, and the
default display was enhanced to show the version of Cisco IOS software
that is running on the standby PRE module.
The default display includes additional information about the history of
switchovers, as well as a stack trace from the secondary PRE module's
ROMMON for when it last crashed, if ever.
: Secondary
Cisco Broadband Cable Command Reference Guide
show redundancy
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