Static multicast routing can be used where multicast clients do not support MLD and in scenarios where multicast traffic has to keep flowing even if the clients do not request to join the corresponding group. When the entry is created, the router creates MLD group reports on the upstream interface.
Please note that static multicast routing can cause high traffic and load because the multicast data is forwarded at all times.
In LANconfig you configure the static IPv6 multicast routes under via Static IPv6 routes.
- Upstream interface
- Interface name where the multicast packets reach the router. Possible values are IPv6 networks, e.g. INTRANET and IPv6 (WAN) remotes.
- Group
- The static forwarding of multicast data is to be configured for this multicast group, e.g. "ff09::1".
- Downstream interface
- Interface name where the multicast packets exit the router. Possible values are IPv6 networks, e.g. INTRANET and IPv6 (WAN) remotes.
- Mode
- If SSM is to be operated: This controls the way in which an MLD membership report requests the source addresses of multicast sources. Possible values:
- Include
- An MLD membership report is sent with the record type "Change to Include Mode". The entries from the SSM source IP list are sent as the desired source addresses. A combination of the setting "Include" and the SSM source IP list with an entry "ANY" will not produce meaningful results and is not accepted internally as a configuration. Otherwise all source IP addresses would be rejected.
- Exclude
- An MLD membership report is sent with the record type "Change to Exclude Mode". If the source list contains the entry "ANY" or "::", i.e. all sources are allowed, then an MLD membership report will be sent with a join group for "any sources". If the list contains an entry other than "::", an MLD membership report "block sources" is sent with the corresponding IP address.
Note:If you want to use an SSM group with any source address, you have to link the mode "Exclude" and SSM source IP list "ANY".
- SSM source IP list
- If SSM is to be operated, a list of desired sources can be specified here in addition to the multicast group. If all sources are to be allowed, the predefined list "ANY" can be used with the entry "::".
