Non-Persistent Connections Manager

Getting Started with Non-Persistent Connections
This chapter provides an overview of the non-persistent connections functionality available in 
CA Spectrum
 OneClick and describes the types of links you can manage.
You can manage transient communications links using OneClick's non-persistent connections functionality. Non-persistent connections generally remain in an inactive state and are activated only under certain conditions. They can be activated manually as needed to serve as normal dialup type communications links, or they can be configured to activate automatically in either of the following two scenarios:
  • To serve as a backup when failure of a primary connection occurs
  • To provide load balancing or extra bandwidth for another overloaded communications link
Non-persistent connections let you see:
  • When a link is activated
  • Whether a link has failed to activate
  • How long a particular link has been active
Events and alarm conditions are generated and logged to maintain accurate link usage statistics. Also, you can view the links as icons so that you can differentiate between normal connections and non-persistent connections and determine a connection's current status at a glance. Within 
CA Spectrum
 these non-persistent connections are represented by the Dialup_Link model type.
Non-Persistent Connection Types
When you create a Dialup_Link model, you choose the type of connection that best suits your needs. The Dialup_Link model type provides functionality for the following three distinct types of non-persistent connections:
  • Dial Backup Link (DBL)
    A Dial Backup Link (DBL) provides a redundant link if a primary link fails. This type of link provides monitoring support for a one-to-one relationship between primary and secondary links and it provides support for multiple primary and secondary link configurations. Each DBL model can provide monitoring capabilities for multiple primary links using a common secondary interface. This is useful when many remote sites use one phone number at a central site (common interface) to support a non-persistent connection.
  • Bandwidth on Demand Link (BODL)
    A Bandwidth on Demand Link (BODL) provides extra bandwidth for connections experiencing congestion problems. Links of this type may or may not be active in conjunction with the primary link. BODLs provide the same redundant capabilities as Dial Backup Links.
  • Primary on Demand Link (PODL)
    A Primary on Demand Link (PODL) is not a redundant connection of any type. These links are activated manually when needed and function as a primary connection. There is no primary-secondary relationship involved.
This section contains information about the following topics: