TABLE OF CONTENTS A router maintains a set of configuration variables for each multicast capable interface. Table 5-4 describes these variables that are specific to router operations defined in [RFC2461]. The names of these variables are for illustration purposes only and are taken from the RFC verbatim. Implementations are free to choose any names for these variables as long as the external behaviors of these variables conform to the specification. A node that functions as a router must allow these variables to be configurable by the system administrative entity. Some of these default values may be overridden by specific documents that describe how IPv6 operates over different media link layers.
| Variable | Default | Description |
|---|---|---|
| AdvSendAdvertisements | FALSE | This variable controls whether a router will transmit periodic router advertisements on an interface. This variable also controls whether a router will respond to router solicitation messages on that interface. The default value prevents a node from acting as a router unless specifically configured to do so. |
| MaxRtrAdvInterval | 600 s | The maximum interval, in seconds, which is allowed between consecutive unsolicited multicast Router Advertisement messages. A configured value must fall between 4 and 1800 seconds inclusive. |
| MinRtrAdvInterval | 0.33 MaxRtrAdvInterval | The minimum interval, in seconds, which is required between consecutive unsolicited multicast Router Advertisement messages. A configured value must fall between 3 seconds and 0.75 MaxRtrAdvInterval. |
| AdvManagedFlag | FALSE | The value to be set for the M-bit in the outgoing Router Advertisement messages. |
