Cisco ASA 5505 - Manual (Page 542)

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Cisco ASA 5500 Series Configuration Guide using the CLI
Chapter 28 Configuring IPv6 Neighbor Discovery
Licensing Requirements for IPv6 Neighbor Discovery
destination address in router solicitation messages is the all-routers multicast address with a scope of the
link. When a router advertisement is sent in response to a router solicitation, the destination address in
the router advertisement message is the unicast address of the source of the router solicitation message.
You can configure the following settings for router advertisement messages:
• The time interval between periodic router advertisement messages.
• The router lifetime value, which indicates the amount of time IPv6 nodes should consider the ASA
to be the default router.
• The IPv6 network prefixes in use on the link.
• Whether or not an interface transmits router advertisement messages.
Unless otherwise noted, the router advertisement message settings are specific to an interface and are
entered in interface configuration mode.
Static IPv6 Neighbors
You can manually define a neighbor in the IPv6 neighbor cache. If an entry for the specified IPv6 address
already exists in the neighbor discovery cache—learned through the IPv6 neighbor discovery
process—the entry is automatically converted to a static entry. Static entries in the IPv6 neighbor
discovery cache are not modified by the neighbor discovery process.
Licensing Requirements for IPv6 Neighbor Discovery
The following table shows the licensing requirements for this feature:
Guidelines and Limitations
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 value is included in all IPv6 router advertisements that are sent out of this interface.
Model License Requirement
All models Base License.