Router Advertisement
Router Advertisement are messages sent by an IPv6 Router to advertise its presence and configure the network, it's part of the IPv6 NDP protocol.
6LBR uses RA messages to advertise its presence and configure the route towards the WSN when running in Router mode. When running in NDP Router mode, the RA messages are instead used to configure the WSN network.
- RA Daemon : Activate the sending of RA messages
- Router Lifetime : When set to a non-zero value, indicates that 6LBR can be used as a Default Router. Do not set it to a non zero value unless 6LBR is in NDP Router mode.
- Max interval : Maximum interval between two unsolicited RA messages
- Min interval : Minimum interval between two unsolicited RA messages
- Min delay : Minimum delay between two solicited RA messages
Prefix Information Option is used to configure a IPv6 prefix on the given network. In 6LBR the prefix advertised is the prefix configured on the interface on which RA are sent, i.e. in Router mode the prefix is the LAN prefix, in NDP Router mode, the prefix is the WSN prefix.
- Send Prefix Information : Include a Prefix Information option in RA message
- Prefix On-Link : Advertised prefix is On-Link, meaning that addresses within the prefix can be reached using link local communication
- Allow Autoconfiguration : Allow hosts to auto configure their IP address using the prefix
- Prefix valid lifetime : Validity lifetime of the prefix
- Prefix preferred lifetime : Lifetime during which the prefix can be used to create new addresses
The Route Information Option is used to advertise routes handled by the router. In 6LBR, the Router Information advertise a route towards the WSN network using the WSN prefix.
- Send Route Information : Include a Prefix Information option in RA message
- Route lifetime : Validity of the route.