Cisco ASA 5505 User Manual
Page 261
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Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 6 Starting Interface Configuration (ASA 5510 and Higher)
Starting Interface Configuration (ASA 5510 and Higher)
•
Changing your configuration offline lets you use the same interface names for your new logical
interfaces, so you do not need to touch the feature configurations that refer to interface names. You
only need to change the interface configuration.
•
Clearing the running system configuration and immediately applying a new configuration will
minimize the downtime of your interfaces. You will not be waiting to configure the interfaces in real
time.
Step 1
Connect to the ASA, and change to the system; if you are using failover, connect to the active ASA.
Step 2
If you are using failover, disable failover by entering the no failover command.
Step 3
In the system, copy the running configuration by entering the more system:running-config command
and copying the display output to a text editor.
Be sure to save an extra copy of the old configuration in case you make an error when you edit it.
For example, you have the following interface configuration and allocation in the system configuration,
with shared interfaces between two contexts.
System
interface GigabitEthernet0/0
no shutdown
interface GigabitEthernet0/1
no shutdown
interface GigabitEthernet0/2
shutdown
interface GigabitEthernet0/3
shutdown
interface GigabitEthernet0/4
shutdown
interface GigabitEthernet0/5
shutdown
interface Management0/0
no shutdown
interface Management1/0
shutdown
!
context customerA
allocate-interface gigabitethernet0/0 int1
allocate-interface gigabitethernet0/1 int2
allocate-interface management0/0 mgmt
context customerB
allocate-interface gigabitethernet0/0
allocate-interface gigabitethernet0/1
allocate-interface management0/0
Step 4
Get copies of all context configurations that will use the new EtherChannel or redundant interface. See
the
“Backing Up a Context Configuration or Other File in Flash Memory” section on page 81-8
.
For example, you download the following context configurations (interface configuration shown):
CustomerA Context
interface int1
nameif outside
security-level 0
ip address 10.86.194.225 255.255.255.0
!
interface int2
nameif inside
security-level 100