User guide

Managing Redundant CMMs Managing CMM Directory Content
page 4-24 OmniSwitch 7700/7800/8800 Switch Management Guide April 2006
Show Currently Used Configuration
In a chassis with a redundant CMM, the display for the currently running configuration tells the user if the
primary and secondary CMM is synchronized.
To check the directory from where the switch is currently running and if the primary and secondary CMM
are synchronized, enter the following command:
-> show running-directory
CONFIGURATION STATUS
Running CMM : PRIMARY,
CMM Mode : DUAL CMMs,
Current CMM Slot : A,
Running configuration : WORKING,
Certify/Restore Status : CERTIFY NEEDED
SYNCHRONIZATION STATUS
Flash Between CMMs : NOT SYNCHRONIZED,
Running Configuration : SYNCHRONIZED,
NIs Reload On Takeover : ALL NIs
The command returns the directory the switch is currently running from (working or certified) and which
CMM is currently controlling the switch (primary or secondary). It also displays whether the working and
certified directories are the same, and if a synchronization is needed between the primary and secondary
CMM. In addition, the command output displays how many Network Interface (NI) modules will be
reloaded in the event of a management module takeover. Options include NONE, ALL, or a list of specific
NIs. Refer to the section below for additional information on NI behavior during a redundant CMM take-
over.
The show running-directory command is described in detail in the OmniSwitch CLI Reference Guide.
NI Module Behavior During Takeover
If there are no unsaved configuration changes and the flash directories on both the primary and secondary
management modules have been synchronized via the copy flash-synchro command, no NIs will be
reloaded if a management module takeover occurs. As a result, data flow is not interrupted on the NIs
during the takeover.
If a configuration change is made to one or more NI modules (e.g., a VLAN is configured on several
different interfaces), and the changes are not saved via the write memory command, the corresponding
NIs will automatically reload if a management module takeover occurs. Data flow on the affected NIs will
be interrupted until the reload is complete. Note that the NIs will reload whether or not the flash synchro-
nization status shows SYNCHRONIZED. This is because the unsaved changes have occurred in the
running configuration (i.e., RAM), and have not been written to the flash directory’s configuration file. In
this case, a list of only the affected NIs displays in the table output (e.g., 1 6 9 12).
If the flash directories on the primary and secondary management modules are not synchronized (e.g., a
copy flash-synchro command has not been issued recently), all NIs will be reloaded automatically if a
management module takeover occurs. Data flow will be interrupted on all NIs until the reload is complete.