Configuring Redundant Hardware - Lucent Technologies Cajun P220 Operation Manual

Configuring Redundant Hardware

In both Layer 2 and Layer 3 models, the Cajun P550 switch provides a redundant
backplane to ensure that if a controller or an element fails, the switch will continue to
route data properly. The redundant components are available as separate options.
When the redundant controller and element are installed, the backplane consists of the
following parts:
One main controller
One redundant controller
Six switch elements
One redundant element
The Cajun P550 switch is equipped with diagnostics to monitor the status of switch
controllers and elements. When an element fails, diagnostics run automatically and test
the hardware. In the Web Agent, information about a failed controller or element
displays in the Switch Fabric Status dialog box.
If the primary controller fails, the redundant controller takes over switch operation until
you replace the primary controller. If an element fails, the redundant element takes over
the function of the failed element until you replace the element.
The following sections explain how to:
Install Redundant Hardware
Replace the Primary Controller
Replace an Element
Cajun P550/P220 Switch Operation Guide
Figure 3-7. Layout of Redundant Backplane
Redundant
Element
Elements
6 - 4
Redundant
Controller
Configuring the Cajun P550 Switch (Layer 2 & Layer 3)
Elements
3 - 1
Primary
Controller
3-41