Cisco Systems SBC-111 manual Contents, Prerequisites for Implementing Redundancy

Implementing SBC Redundancy (High Availability)

Contents

Contents

•Prerequisites for Implementing Redundancy, page SBC-112

•Information About Implementing Redundancy, page SBC-112

•How to Implement Redundancy, page SBC-112

•Configuration Examples of Implementing a Redundancy, page SBC-116

•Additional References, page SBC-117

•Related Command Summary, page SBC-118

Prerequisites for Implementing Redundancy

The following prerequisites are required to implement SBC redundancy:

•You must be in a user group associated with a task group that includes the proper task IDs for SBC commands being used. For detailed information about user groups and task IDs, see the defined task ID required per command in the Cisco IOS XR Session Border Controller Command Reference.

•You must install and activate the package installation envelope (PIE) for the SBC software.

For detailed information about PIE installation, refer to the Upgrading and Managing Cisco IOS XR Software module in the Cisco IOS XR Getting Started Guide.

•Before implementing interworking SBC redundancy, the SBC must already be created. See the procedures described in the “SBC Configuration Prerequisites” module.

Information About Implementing Redundancy

SBC fault tolerance is based on a 1:1 paired-protection model. For each service card running active SBC components, there can be one service card providing failure protection. The same services must be provisioned on both cards (one as the primary card, one as the standby card), and the service cards are then said to be paired. Although from an Cisco IOX XR system perspective, service cards are always running in active mode, SBC services running on these cards run as either the primary service or the standby service.

How to Implement Redundancy

Redundancy configurations are described in the following sections:

•Configuring a Redundancy

•Deleting a Redundancy

Cisco IOS XR Session Border Controller Configuration Guide

SBC-112