<font size=2 face="sans-serif">Marcin,</font>
<br>
<br><font size=2 face="sans-serif">it's correct. by default, without igmp
snooping, the multicast flows are broadcasted on a L2 switch.</font>
<br>
<br><font size=2 face="sans-serif">Did you have put the multicast flow
(in entry) on a protected VLAN of EAPS ring ? </font>
<br>
<br><font size=2 face="sans-serif">Regards,</font>
<br>
<br>
<br><font size=2 face="sans-serif">Tristan Fauriant<br>
</font>
<br>
<br>
<br>
<br><font size=1 color=#5f5f5f face="sans-serif">De :
</font><font size=1 face="sans-serif">Marcin Kuczera <marcin@leon.pl></font>
<br><font size=1 color=#5f5f5f face="sans-serif">A :
</font><font size=1 face="sans-serif">"extreme-nsp@puck.nether.net"
<extreme-nsp@puck.nether.net></font>
<br><font size=1 color=#5f5f5f face="sans-serif">Date :
</font><font size=1 face="sans-serif">30/12/2013 14:47</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Objet :
</font><font size=1 face="sans-serif">[e-nsp] VLAN
without IGMP snooping and multicasts</font>
<br><font size=1 color=#5f5f5f face="sans-serif">Envoyé par :
</font><font size=1 face="sans-serif">"extreme-nsp"
<extreme-nsp-bounces@puck.nether.net></font>
<br>
<hr noshade>
<br>
<br>
<br><tt><font size=2>hello,<br>
<br>
we have a customer who has some strange devices transmitting "fixed"
<br>
multicast stream without using IGMP requests in a regular way.<br>
So we had to turn off IGMP snooping on that vlan, otherwise transmission
<br>
was extinguished after IGMP timers expire.<br>
I'am not arguing with these devices, they transmit DVB-T MUX signal in
<br>
their own, properitary way.<br>
<br>
However, because it passes EAPS ring, I have noticed that this stream is
<br>
also broadcasted to backup port of EAPS ring.<br>
<br>
So my question is - is it correct that multicasts when IGMP snooping is
<br>
off are broadcasted instead of using regular FDB ?<br>
<br>
Switches: Summit-X650-24x<br>
Soft: ExtremeXOS version 15.3 series<br>
<br>
Regards,<br>
Marcin<br>
<br>
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