Cisco ASA 5505 - Manual (Page 220)

5-20
Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 5 Configuring Multiple Context Mode
Configuring Multiple Contexts
Step 3 To allocate a physical interface:
allocate-interface physical_interface
[mapped_name] [visible | invisible]
To allocate one or more subinterfaces:
allocate-interface
physical_interface.subinterface[-physical_
interface.subinterface]
[mapped_name[-mapped_name]] [visible |
invisible ]
Example:
hostname(config-ctx)# allocate-interface
gigabitethernet0/1.100 int1
hostname(config-ctx)# allocate-interface
gigabitethernet0/1.200 int2
hostname(config-ctx)# allocate-interface
gigabitethernet0/2.300-gigabitethernet0/2.
305 int3-int8
Specifies the interfaces you can use in the context. Do not include
a space between the interface type and the port number.
Enter these commands multiple times to specify different ranges.
If you remove an allocation with the no form of this command,
then any context commands that include this interface are
removed from the running configuration.
Transparent firewall mode allows a limited number of interfaces
to pass through traffic; however, you can use a dedicated
management interface, Management slot/port, (physical,
subinterface, redundant, or EtherChannel) as an additional
interface for management traffic. The management interface for
transparent mode does not flood a packet out the interface when
that packet is not in the MAC address table.
You can assign the same interfaces to multiple contexts in routed
mode, if desired.
The mapped_name is an alphanumeric alias for the interface that
can be used within the context instead of the interface ID. If you
do not specify a mapped name, the interface ID is used within the
context. For security purposes, you might not want the context
administrator to know which interfaces are being used by the
context. A mapped name must start with a letter, end with a letter
or digit, and have as interior characters only letters, digits, or an
underscore. For example, you can use the following names:
int0, inta, int_0
If you specify a range of subinterfaces, you can specify a
matching range of mapped names. Follow these guidelines for
ranges:
• The mapped name must consist of an alphabetic portion
followed by a numeric portion. The alphabetic portion of the
mapped name must match for both ends of the range. For
example, enter the following range:
int0-int10
If you enter gig0/1.1-gig0/1.5 happy1-sad5 , for example,
the command fails.
• The numeric portion of the mapped name must include the
same quantity of numbers as the subinterface range. For
example, both ranges include 100 interfaces:
gigabitethernet0/0.100-gigabitethernet0/0.199
int1-int100
If you enter gig0/0.100-gig0/0.199 int1-int15 , for
example, the command fails.
Specify visible to see the real interface ID in the show interface
command if you set a mapped name. The default invisible
keyword shows only the mapped name.
Command Purpose