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User Guide for Cisco Security Manager 4.4
OL-28826-01
Chapter 45 Managing Firewall Devices
Configuring Firewall Device Interfaces
Add/Edit Interface Dialog Box: Advanced Tab (ASA/PIX 7.0+)
The Add/Edit Interface Dialog Box (PIX 7.0+/ASA/FWSM), page 45-19, is used to define and configure
interfaces, subinterfaces, redundant, and EtherChannel interfaces on ASA and PIX 7.0+ devices. You can
access the Add/Edit Interface dialog box from the Interfaces page. See Managing Device Interfaces,
Hardware Ports, and Bridge Groups, page 45-14 for more information.
The Advanced panel of this dialog box is used to configure basic interface settings, including Duplex,
Speed, and maximum transmission unit (MTU) parameters, as described in the following table.
Related Topics
• Add/Edit Interface Dialog Box: General Tab (PIX 7.0+/ASA/FWSM), page 45-20
• Configuring IPv6 Interfaces (ASA/FWSM), page 45-29
Table 45-4 Advanced tab: Add/Edit Interface Dialog Box (ASA/PIX 7.0+)
Element Description
Duplex Lists the duplex options for the interface, including Auto, Full, Half, or N/A,
depending on the interface type.
For TenGigabitEthernet (ASA 5580 only), Duplex is automatically set to
Full.
Note This option is not available when Subinterface or Redundant is the
chosen Interface type.
Speed Lists the speed options (in bits per second) for a physical interface; not
applicable to logical interfaces. The speeds available depend on the interface
type.
• auto
• 10
• 100
• 1000
• 10000 (set automatically for a TenGigabitEthernet interface; available
only on ASA 5580)
• nonegotiate
Note This option is not available when Subinterface or Redundant is the
chosen Interface type.
MTU Specify the maximum packet size in bytes; that is, the maximum
transmission unit (MTU). The value depends on the type of network
connected to the interface. Valid values are 300 to 65535 bytes. Default is
1500 for all types except PPPoE, for which the default is 1492. In
multiple-context mode, set the MTU in the context configuration.
Active MAC Address
Standby MAC Address
Available only on PIX 7.2+ and ASA 7.2+ devices.
Use the Active MAC Address field to manually assign a private MAC
address to the interface; the Standby MAC Address field can be used to set
a standby MAC address for use with device-level failover.
Refer to Device Interface: MAC Address, page 45-38 for more information
about these fields.