Make multicast traverse repeater bridge

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Fennectech
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Joined: 01 Feb 2022
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PostPosted: Sat Feb 12, 2022 4:13    Post subject: Make multicast traverse repeater bridge Reply with quote
I have a Ethernet client bridge on ddwrt router configured as a client bridge. However multicast packets do not traverse the bridge making things like iTunes sync and other automatic discovery things not work. Is there a way to make multicast packets go over the link to **ALL** clients on the subnet and not just clients on the side of the bridge the multicast packets originate from
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TamiCopeland
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Joined: 18 Feb 2022
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PostPosted: Fri Feb 18, 2022 7:58    Post subject: Reply with quote
I myself am looking for an answer to this question.
Mr R Design
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Joined: 04 Nov 2020
Posts: 56

PostPosted: Fri Feb 18, 2022 15:34    Post subject: Reply with quote
Which router/firmware? It might be worth re-posting the question in either the Atheros or Broadcom section.
kernel-panic69
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Joined: 08 May 2018
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Location: Texas, USA

PostPosted: Fri Feb 18, 2022 18:02    Post subject: Reply with quote
Mutlicast and ARP do not traverse these fake bridge modes; there is no known workaround that I have found. This is a known issue that will probably never be fixed.
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Per Yngve Berg
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PostPosted: Sat Feb 19, 2022 11:02    Post subject: Reply with quote
You probably mean Broadcast, not Multicast.

Broadcast is limited to one Ethernet segment.

Multicast needs a IGMP Querier or PIM Protocol Deamon on the router.

https://en.wikipedia.org/wiki/Protocol_Independent_Multicast

https://en.wikipedia.org/wiki/Multicast_DNS
kernel-panic69
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PostPosted: Sat Feb 19, 2022 12:33    Post subject: Reply with quote
No, I do mean multicast, and that is coming straight from an email between myself and BrainSlayer in which he also repeated something about removing said fake bridge mode options completely if people can't handle configuring them.
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eibgrad
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PostPosted: Sun Feb 20, 2022 9:13    Post subject: Reply with quote
The only hope of it working is w/ WDS, which comes w/ all its own known compatibility issues and limitations.
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