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Introducing Sheer DNA
Cisco Systems, Inc. Page 9
Protection Group
A Protection Group is a cluster to which Units and Standby Units are related.
In case of Unit failover then the Redundant Unit will be taken from the same
Protection Group.
Redundant Unit
The Sheer DNA Unit comes with built-in redundancy for maximum up time
and automatic switching. A threshold configurable watchdog constantly
monitors the Sheer DNA Units and Sheer DNA Gateway and can make an
automatic or manual (operator approved) switch over when there is no
response from the monitored entity. The system is always up-to-date via real
time investigation of the network. The redundancy mechanism ensures
synchronization of the active and backup Sheer DNA units. Once activated,
the standby Sheer DNA node is immediately synchronized with the network.
Roles
Sheer DNA implements a security engine that combines a role-based security
mechanism that is applied on scopes of Network Elements granted per user.
The system supports user accounts creation, multiple Network Element scope
definition and a set of five pre-defined roles for security and access control to
allow different system functions:
• Administrator: Manage the system configuration and security.
• Configurator: Activate services, and configure the network.
• Operator Plus: Able to fully control alarm life cycle and create maps.
• Operator: Configure business tags and perform most day-to-day
operations.
• Viewer: Read only access to the network and to non-privileged system
functions.
Roles can be granted per scope or at an application level (default permission),
namely, all the activities that are related to GUI functionality, not the
activities related to devices. The default permission includes:
• Application login.
• Manage alarms in Sheer NetworkVision.
• Manage maps: Creating, deleting, and opening.
• Map manipulation: Arrange map, including, aggregations, adding NEs,
NEs placement in map, map background and so on.
• Business tag management.