Table of Contents
Advertisement
Disaster Recovery
When disaster occurs, the receiver will tune to channel 11, as defined on the Backup
1 transport.
If the acquisition is successful on the backup 1 transport (PAT is received), the
receiver will set PE 1 to channel 11 and PE2 to channel 12 and declare that the
disaster is over.
If the acquisition fails or there is no signal lock on the backup 1 transport, the
receiver will continue to search for the next backup transport for PE1 (Backup 2
transport). If the acquisition is successful on the backup 2 transport, the receiver will
set PE1 to channel 101, but leave PE2 to channel 2 because PE2 is not specified for
Backup 2 transport.
If the acquisition fails or there is no signal lock on the backup 2 transport, it will
continue the search path and set PE1 to channel 801 and PE2 to channel 1005 if the
acquisition is successful on the backup 3 transport. However, if the acquisition fails
or there is no signal lock on the backup 3 transport, the search path will continue to
the origin transport. The search path will cycle through origin, backup 1, backup 2,
and backup 3 infinitely.
The search path is shown in the Disaster Recovery Status information on the front
panel and web GUI.
By default, the disaster recovery is enabled. To set up and view the disaster recovery
parameters using the front panel, see Setup Menu: D/R (on page 143) and Status
Menu - D/R (on page 67). To set up and view the disaster recovery parameters using
the web GUI, see Configuring the Disaster Recovery Settings (on page 183) and
Viewing the Disaster Recovery Status (on page 187).
Uplink Profile Settings
Once the receiver detects a failure after the configured signal loss timeout (defined
by the uplink), it will initiate a disaster recovery using the PNC uplink Disaster
Recovery Profile settings. If the PNC uplink is set to allow local disaster recovery,
the disaster recovery profile setting on the unit determines the disaster recovery
setting to use (local or uplink). If the PNC uplink does not allow local disaster
recovery, the uplink disaster recovery profile is used, even if the disaster recovery
profile setting on the unit is set to local. If the unit is not connected to the PNC
uplink, an error message is triggered and it will use the local disaster recovery
settings, if enabled.
During a disaster recovery, the PNC sends the Disaster Recovery Table (DRT) to the
receiver, along with the backup locations. The DRT is a table of data structures sent
from the PNC to the unit through the satellite uplink. For more information on t he
uplink disaster recovery, contact your PNC uplink administrator.
9
Advertisement
Table of Contents
