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Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring a Cluster of ASAs
Information About ASA Clustering
Note
If multiple units tie for the highest priority, the cluster unit name and then the serial number
is used to determine the master.
4.
If a unit later joins the cluster with a higher priority, it does not automatically become the master
unit; the existing master unit always remains as the master unless it stops responding, at which point
a new master unit is elected.
Note
You can manually force a unit to become the master. For centralized features, if you force a master unit
change, then all connections are dropped, and you have to re-establish the connections on the new master
unit. See the
“Centralized Features” section on page 1-18
for a list of centralized features.
ASA Cluster Interfaces
You can configure data interfaces as either Spanned EtherChannels or as Individual interfaces. All data
interfaces in the cluster must be one type only.
•
•
Interface Types
•
Spanned EtherChannel (Recommended)
You can group one or more interfaces per unit into an EtherChannel that spans all units in the cluster.
The EtherChannel aggregates the traffic across all the available active interfaces in the channel. A
Spanned EtherChannel can be configured in both routed and transparent firewall modes. In routed
mode, the EtherChannel is configured as a routed interface with a single IP address. In transparent
mode, the IP address is assigned to the bridge group, not to the interface. The EtherChannel
inherently provides load balancing as part of basic operation. See also the
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: ......