Cisco Model 6109 6 MHz Off-Air Reference (NTSC) Guide De Montage
Operation Overview
4039132 Rev B
15
USRM Server Roles
The USRM operates in one of various modes depending on the designated role of
the USRM in the customer configuration. A single USRM is designated to be used in
one of three roles as indicated in the following table.
the USRM in the customer configuration. A single USRM is designated to be used in
one of three roles as indicated in the following table.
Server Role
Description
Primary Server
A primary server is dedicated to implementing services for a
specific set of devices, geographical area, or other customer
defined subsystem.
specific set of devices, geographical area, or other customer
defined subsystem.
Standby Server
A standby server monitors multiple primary servers, maintains
the exact database state of the primary servers and switches online
to replace a primary server in the event of a primary server failure.
the exact database state of the primary servers and switches online
to replace a primary server in the event of a primary server failure.
Note: Since the standby server maintains the database of multiple
primary servers, the standby server user interface provides access
to multiple servers from a single web interface console.
primary servers, the standby server user interface provides access
to multiple servers from a single web interface console.
USRM Operating Modes
The USRM operates in one of two modes depending on how it will be provisioned
and configured.
and configured.
Operating Mode Description
Supervised
In supervised mode, the USRM is provisioned using the Digital
Network Control System (DNCS) or another SNMP provisioner.
In this mode, the software starts and requests provisioning from
DNCS. Upon receiving provisioning, including the startup mode,
the software starts to provide services.
Network Control System (DNCS) or another SNMP provisioner.
In this mode, the software starts and requests provisioning from
DNCS. Upon receiving provisioning, including the startup mode,
the software starts to provide services.
At boot time, the USRM issues an SNMP trap to the DNCS
requesting provisioning. The DNCS then uses SNMP to download
to the USRM the configuration parameters that were set for it
using the DNCS. This is referred to as "solicited provisioning."
requesting provisioning. The DNCS then uses SNMP to download
to the USRM the configuration parameters that were set for it
using the DNCS. This is referred to as "solicited provisioning."
In addition, "unsolicited provisioning" is pushed from the DNCS
to the server any time a change in configuration is entered into the
system.
to the server any time a change in configuration is entered into the
system.
Note: For complete instructions on provisioning the USRM with
DNCS, refer to the appropriate DNCS User's Guide.
DNCS, refer to the appropriate DNCS User's Guide.
Standalone
In standalone mode, the USRM is provisioned and configured
directly using its web browser interface. No SNMP provisioner is
available or used to provide provisioning and startup state.
directly using its web browser interface. No SNMP provisioner is
available or used to provide provisioning and startup state.
Note: Refer to USRM Web Interface (on page 34) for complete
instructions.
instructions.