[e-nsp] VLAN without IGMP snooping and multicasts

[tfauriant at mousquetaires.com]

Marcin,

it's correct. by default, without igmp snooping, the multicast flows are 
broadcasted on a L2 switch.

Did you have put the multicast flow (in entry) on a protected VLAN of EAPS 
ring ? 

Regards,


Tristan Fauriant




De :    Marcin Kuczera <marcin at leon.pl>
A :     "extreme-nsp at puck.nether.net" <extreme-nsp at puck.nether.net>
Date :  30/12/2013 14:47
Objet : [e-nsp] VLAN without IGMP snooping and multicasts
Envoyé par :    "extreme-nsp" <extreme-nsp-bounces at puck.nether.net>



hello,

we have a customer who has some strange devices transmitting "fixed" 
multicast stream without using IGMP requests in a regular way.
So we had to turn off IGMP snooping on that vlan, otherwise transmission 
was extinguished after IGMP timers expire.
I'am not arguing with these devices, they transmit DVB-T MUX signal in 
their own, properitary way.

However, because it passes EAPS ring, I have noticed that this stream is 
also broadcasted to backup port of EAPS ring.

So my question is - is it correct that multicasts when IGMP snooping is 
off are broadcasted instead of using regular FDB ?

Switches: Summit-X650-24x
Soft: ExtremeXOS version 15.3 series

Regards,
Marcin

_______________________________________________
extreme-nsp mailing list
extreme-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/extreme-nsp

----------------------------- Disclaimer ------------------------------
--- Ce message ainsi que les éventuelles pièces jointes constituent une
correspondance privée et confidentielle à l'attention exclusive du
destinataire désigné ci-dessus. Si vous n'êtes pas le destinataire du
présent message ou une personne susceptible de pouvoir le lui délivrer,
il vous est signifié que toute divulgation, distribution ou copie,
totale ou partielle, sur un quelconque support de cette transmission
est strictement interdite. Si vous avez recu ce message par erreur,
nous vous remercions d'en informer l'expéditeur par téléphone ou de lui
retourner le présent message, puis d'effacer immédiatement ce message
de votre systeme. Tout message électronique est susceptible
d'altération. Le "groupement des Mousquetaires" décline toute
responsabilité au titre de ce message s'il a été altéré, déformé ou
falsifié.---
--- This e-mail and any attachments is a confidential correspondence
intended only for use of the individual or entity named above. If you
are not the intended recipient or the agent responsible for delivering
the message to the intended recipient, you are hereby notified that any
disclosure, distribution or copying, either whole or partial, in any
medium of this communication is strictly prohibited. If you have
received this communication by mistake, please notify the sender by
phone or by replying this message, and then delete this message from
your system. E-mails are susceptible of alteration. The
"Mousquetaires' group" shall not therefore be liable for the message
if altered, changed or falsified.---
-----------------------------------------------------------------------

 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/extreme-nsp/attachments/20140102/46733586/attachment.html>