CHAPTER
8-1
Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
8
Configuring Interfaces
This chapter describes how to configure interfaces, including Ethernet parameters, switch ports (for the
ASA 5505), VLAN subinterfaces, and IP addressing.
The procedure to configure interfaces varies depending on several factors: the ASA 5505 vs. other
models; routed vs. transparent mode; and single vs. multiple mode. This chapter describes how to
configure interfaces for each of these variables.
Note If your adaptive security appliance has the default factory configuration, many interface parameters are
already configured. This chapter assumes you do not have a factory default configuration, or that if you
have a default configuration, that you need to change the configuration. For information about the
factory default configurations, see the “Factory Default Configurations” section on page 2-5.
This chapter includes the following sections:
• Information About Interfaces, page 8-1
• Licensing Requirements for Interfaces, page 8-6
• Guidelines and Limitations, page 8-7
• Default Settings, page 8-8
• Starting Interface Configuration (ASA 5510 and Higher), page 8-9
• Starting Interface Configuration (ASA 5505), page 8-16
• Completing Interface Configuration (All Models), page 8-21
• Allowing Same Security Level Communication, page 8-31
• Enabling Jumbo Frame Support (ASA 5580, Multiple Mode), page 8-32
• Monitoring Interfaces, page 8-32
• Feature History for Interfaces, page 8-40
Information About Interfaces
This section describes adaptive security appliance interfaces and includes the following topics:
• ASA 5505 Interfaces, page 8-2
• ASA 5580 Interfaces, page 8-5
• Auto-MDI/MDIX Feature, page 8-5
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