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Intermittent DLNA service to televisions
I am having intermittent service to my TV's, using hardwired CAT5, with DLNA service from ReadyNAS and Synology media server. I don't know where to look or who to ask for a possible solution. NetGe...
Hi Chris,
IGMP snooping is unlikley the cluprit ... more likely the "Block Unknown Multicast Address" which network admins often tend to tick when IGMP Snooping is enabled.
More and more ISP are offering IPTV, so there is no way around having light managed switches, and a properly working IGMP Multicast snooping - otherwise all switch ports and radio interfaces are flooded with multicast (e.g. live TV) traffic.
-Kurt
IGMP snooping seems to be the culprut. This is a very subtile problem and I thank you for the suggestion. I turned it off and restarted the switch. The DLNA servers appeared on all my TV's and I was able to play video everywhere on both NAS units. So you are absolutely correct, the IGMP that is enabled with a new Prosafe switch will cause discovery problems on this JGS524ev2 model switch. If it causes problems with this managed switch, it may also cause problems on other models depending on who programmed the firmware.
Problem seems to be solved. Will watch it over a peroid of time to see if any issues arise again. I didn't says this, but I'm pretty familiar with networking and internet. Have been involved as an engineer for many years. However knowledge doesn't always get you out of these types of jambs. This could have been very toiugh to tackle without being able to narrow down to the switch with pretty good certaintity.
Hopefully this post might help others that have DLNA discovery problems.
Thank You Again
Chris
Hi Chris,
IGMP snooping is unlikley the cluprit ... more likely the "Block Unknown Multicast Address" which network admins often tend to tick when IGMP Snooping is enabled.
More and more ISP are offering IPTV, so there is no way around having light managed switches, and a properly working IGMP Multicast snooping - otherwise all switch ports and radio interfaces are flooded with multicast (e.g. live TV) traffic.
-Kurt
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