@Arnie schreef: Het "probleem" hier lijkt te zijn dat je Access-Point eigenlijk een router is, met allerlei extra features. Dit kon zou zijn voordelen, maar ook nadelen hebben (je netwerk wordt complexer). IGMP Snooping is ook iets wat ik op mijn wired switches kan aanzetten hoor. Dit zijn layer-2 switches, weliswaar managed, maar zonder routerfunctionaliteit. https://networklessons.com/cisco/ccie-routing-switching/igmp-snooping-without-router https://routerguide.net/enable-igmp-snooping-on-or-off/ Wat me nog niet duidelijk is: wat als je IGMP snooping afzet? Dan zou het ook moeten werken omdat de multicasts over alle poorten worden uitgestuurd, alsof het een broadcast was. Maar misschien ziet die Asus het anders, en dropt hij de multicast pakketten gewoon. EDIT: dit is interessant: "However I found out that Wireless Clients do not reliably get RAs sent to the IPv6 Multicast Address (while clients on cable Ethernet got everything as they should). This is explained in more detail here: https://wiki.mikrotik.com/wiki/Manual:Multicast_detailed_example#Multicast_and_Wireless Configuring my Mikrotik WLAN AP with "multicast-helper=full" solved the issue. I don't know about your setup but it might be worth to investigate." Dit komt van https://forums.oneplus.com/threads/hosts-within-local-ipv6-subnet-are-unreachable-from-phone.1168754/#post-21636077 En op die Microtik Wiki staat "Multicast and Wireless Multicast (and broadcast) over wireless works over wireless depending on who is transmitting multicast packet: If AP transmits multicast packet, packet is transmitted over air with multicast receiver address (and yes - only single copy of packet is transmitted no matter how many clients are registered). As there is no single recipient of packet, it does not get acked - therefore delivery is not reliable (no retransmissions in case somebody does not receive packet). Due to this unreliable delivery, lowest basic rate is used to ensure as reliable delivery as possible. So even if you can send unicast stream between AP and Station using 54Mpbs air rate, multicasts are sent only using 6Mbps air rate (assuming that 6Mbps is lowest basic rate). If Station transmits multicast packet, it is transmitted over air with unicast AP receiver address (as Stations always transmit all packets to AP, and always using unicast receiver address). Due to this, delivery of multicast packets from Station to AP is reliable and subject to normal rate selection process - max throughput can be used. What complicates the matter - when AP receives multicast packet from Station, it processes it locally, but it also must send it back over the air so that the rest of stations in wireless network see it (think of AP as switch in ethernet, except that is does not have to send multiple copies of packet for all clients to receive). This causes AP to execute multicast transmission procedure as described above, therefore every multicast packet gets transmitted over air twice - first time by Station (using its transmit rate) and second time - by AP using lowest basic rate. This behaviour can be altered by disabling "forwarding" option for particular Station on AP (or for all clients using "default-forwarding" option) - disabling forwarding causes AP not to forward traffic between clients and also disables "sending back" multicasts and broadcasts received from client, because that can be considered special case of forwarding traffic between clients." Mijn aanname is dat je met IGMP snooping er voor zorgt dat de pakketjes vanaf de client naar de AP, niet onnodig opnieuw worden teruggestuurd vanaf de AP naar de client. Dit zou anders problemen geven met de RA's (route advertisements). Maar dit is een aanname, ben absoluut niet zeker. Enfin @Ex-Netweter don't touch it now 😉
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