Cisco ASA Series User Manual

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Cisco ASA Series CLI Configuration Guide
Chapter 1 Completing Interface Configuration (Routed Mode)
Turning Off and Turning On Interfaces
Turning Off and Turning On Interfaces
This section describes how to turn off and on an interface.
All interfaces are enabled by default. In multiple context mode, if you disable or reenable the interface
within a context, only that context interface is affected. But if you disable or reenable the interface in
the system execution space, then you affect that interface for all contexts.
Detailed Steps
Monitoring Interfaces
To monitor interfaces, enter one of the following commands:
Configuration Examples for Interfaces in Routed Mode
This section includes the following topics:
• ASA 5505 Example, page 1-18
ASA 5505 Example
The following example configures three VLAN interfaces for the Base license. The third home interface
cannot forward traffic to the business interface.
hostname(config)# interface vlan 100
Command Purpose
Step 1
hostname(config)# interface {vlan number |
mapped_name}
Example:
hostname(config)# interface vlan 100
If you are not already in interface configuration mode, enters
interface configuration mode.
In multiple context mode, enter the mapped_name if one was
assigned using the allocate-interface command.
Step 2
shutdown
Example:
hostname(config-if)# shutdown
Disables the interface.
Step 3
no shutdown
Example:
hostname(config-if)# no shutdown
Reenables the interface.
Command Purpose
show interface
Displays interface statistics.
show interface ip brief
Displays interface IP addresses and status.

Cisco ASA Series Specifications

General

Brand	Cisco
Model	ASA Series
Category	Network Hardware
Language	English