25-12
Cisco ASA 5500 Series Configuration Guide using ASDM
OL-20339-01
Chapter 25 Configuring IPv6 Neighbor Discovery
Configuring Router Advertisement Messages
Configuring the Router Lifetime Value
This section shows how to configure the interval between IPv6 router advertisement transmissions on an
interface and includes the following topics:
• Licensing Requirements for the Router Lifetime Value, page 25-12
• Guidelines and Limitations for the Router Lifetime Value, page 25-12
• Default Settings for the Router Lifetime Value, page 25-12
• Configuring the Router Lifetime Value, page 25-13
• Feature History for the Router Lifetime Value, page 25-13
Licensing Requirements for the Router Lifetime Value
The following table shows the licensing requirements for this feature:
Guidelines and Limitations for the Router Lifetime Value
This section includes the guidelines and limitations for this feature.
Context Mode Guidelines
Supported in single and multiple context mode.
Firewall Mode Guidelines
Supported in routed mode only. Transparent mode is not supported.
Additional Guidelines and Limitations
The interval between transmissions should be less than or equal to the IPv6 router advertisement lifetime
if the adaptive security appliance is configured as a default router. To prevent synchronization with other
IPv6 nodes, randomly adjust the actual value used to within 20 percent of the specified value.
Default Settings for the Router Lifetime Value
Table 25-7 lists the default settings for neighbor reachable time parameters.
Model License Requirement
All models Base License.
Table 25-7 Default Router Advertisement Transmission Interval Parameters
Parameters Default
value (interval between transmissions) The default is 200 seconds.
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