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C H A P T E R
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Cisco ASA Series CLI Configuration Guide
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Configuring Active/Standby Failover
This chapter describes how to configure Active/Standby failover and includes the following sections:
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Information About Active/Standby Failover, page 1-1
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Licensing Requirements for Active/Standby Failover, page 1-6
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Prerequisites for Active/Standby Failover, page 1-6
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Guidelines and Limitations, page 1-6
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Configuring Active/Standby Failover, page 1-7
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Controlling Failover, page 1-16
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Monitoring Active/Standby Failover, page 1-18
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Feature History for Active/Standby Failover, page 1-18
Information About Active/Standby Failover
This section describes Active/Standby failover and includes the following topics:
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Active/Standby Failover Overview, page 1-1
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Primary/Secondary Status and Active/Standby Status, page 1-2
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Device Initialization and Configuration Synchronization, page 1-2
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Active/Standby Failover Overview
Active/Standby failover enables you to use a standby ASA to take over the functionality of a failed unit.
When the active unit fails, it changes to the standby state while the standby unit changes to the active
state. The unit that becomes active assumes the IP addresses (or, for transparent firewall, the
management IP address) and MAC addresses of the failed unit and begins passing traffic. The unit that
is now in standby state takes over the standby IP addresses and MAC addresses. Because network
devices see no change in the MAC to IP address pairing, no ARP entries change or time out anywhere
on the network.
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......