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You are here: Home / SWITCH / Module 8 / High Availability and LAN Redundancy – The Different Types of High Availability

High Availability and LAN Redundancy – The Different Types of High Availability

High Availability can be implemented at the service level, the system level, or the network level. While the SWITCH exam requirements are centered around network-level HA, it is important to have an understanding of both service-level and system-level HA. These three types of HA are described in the following sections.

Service-Level High Availability

In Cisco Catalyst switches, modular IOS software provides the ability to upgrade and restart services running on the system without affecting the entire system. Because individual processes or services run in a protected memory space, a failure . . .

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