CHAPTER42 HA Maintenance
Mediant 800 Gateway & E-SBC | User's Manual
42 HA Maintenance
This section describes HA maintenance.
Maintenance of Redundant Device
The only interface that is operational on the redundant device is the Maintenance interface. The
following protocols can be used for maintenance purposes for this interface:
■ Syslog: To receive Syslog messages from the redundant device, make sure that you have
configured a valid VLAN and routing rule from the Maintenance network to the Syslog server.
■ Telnet: A Telnet server is always available on the redundant device (even if disabled by
configuration).
The active device runs the above maintenance protocols on its' OAMP interface.
Replacing a Failed Device
If you need to replace a faulty device, the new device must be configured exactly as the second
device, as described in Configuring the HA Devices.
Initiating an HA Switchover
You can initiate a switchover from the Active to Redundant device.
When performing an HA switchover, the HA mode becomes temporarily unavailable.
➢ To perform a switch-over:
1. Open the High Availability Maintenance page:
● Toolbar: Click the Actions button, and then from the drop-down menu, choose
Switchover.
● Navigation tree: Setup menu > Administration tab > Maintenance folder > High
Availability Maintenance.
2. Click Switch Over; a confirmation box appears requesting you to confirm.
3. Click OK.
Resetting the Redundant Unit
You can reset the Redundant device, if necessary.
When resetting the Redundant device, the HA mode becomes temporarily unavailable.
➢ To reset the Redundant device:
1. Open the High Availability Maintenance page:
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