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Cisco Global Site Selector Administration Guide
OL-10410-01
Chapter 2 Managing the GSS from the CLI
Changing the GSSM Role in the GSS Network
•
Ensure that the designated primary GSSM is either offline or configured as a
standby GSSM before you attempt to enable the standby GSSM as the new
primary GSSM. Having two primary GSSM devices active at the same time
may result in the inadvertent loss of configuration changes for your GSS
network.
Although DNS request routing continues to function in such a situation, GUI
configuration changes made on one or both primary GSSM devices may be
lost or overwritten and are not communicated to the GSS devices. If this dual
primary GSSM configuration occurs, the two primary GSSM devices change
to standby mode. You must then reconfigure the original deployed primary
GSSM as the primary GSSM.
•
The switching of roles between the designated primary GSSM and the
standby GSSM is intended to be a temporary GSS network configuration until
the original primary GSSM is back online. Use the interim primary GSSM to
monitor GSS network behavior and, if necessary, to make configuration
changes.
This section contains the following topics:
•
Switching the Roles of the Primary and Standby GSSM Devices
•
Reversing the Roles of the Interim Primary and Standby GSSM Devices
Switching the Roles of the Primary and Standby GSSM Devices
This procedure assumes that your primary GSSM is online and functional when
you are switching GSSM roles. If the primary GSSM is not functional, proceed to
Step 6.
To change the role of your primary and standby GSSM devices, perform the
following steps:
1.
Log in to the CLI and enable privileged EXEC mode.
gssm1.example.com>
enable
gssm1.example.com#
2.
Perform a full backup of your primary GSSM to preserve your current
network and configuration settings (see the
“Performing a Full Primary
GSSM Backup”
section in
Chapter 7,
,
Backing Up, Restoring, and
Downgrading the GSSM Database
).