Re: [ts-7000] Re: Is MultiCast Routing needed to receive MultiCast frames on TS-7250

[Jeremy Freeman <>]

Are you sure your switch does not have IGMP snooping enabled? I had a similar multicast problem in the past where my switch was filtering the multicast.

--
Jeremy

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From: damotclese <>
To:
Sent: Thursday, August 27, 2009 3:03:38 PM
Subject: [ts-7000] Re: Is MultiCast Routing needed to receive MultiCast frames on TS-7250

 

--- In Eric Robishaw <> wrote:

> route add -net 224.0.0.0 netmask 224.0.0.0 dev eth0

That was not it. That ensures that outbound MultiCast go out eth0. It can be over-ridden by setsockopts( ) IP_MULTICAST_ IF but that's all outbound to the network.

Coming in from the network to the TS7250 should only need an IP_ADD_MEMBERSHIP from an INNET_ANY interface.

Curiously running a sniffer on the TS7250 which monitors all IP frames using a RAW socket, I don't see the inbound MultiCast frames which means they're being filtered either at the MAC level or, well, the MAC level.

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