Good evening everyone

I have a strange phenomenon here that I can no longer explain and has cost me half the day.

First about the topology:

- Centro_piccolo Router

1. Network tap –> Patch cable –> Switch –>

1.1: Swisscom TV Box

1.2: Blu-Ray Player

1.3: Raspberry Pi as a media center

2. Network access –> ASUS RT-66U WLAN router

2.1: Swisscom TV Box

2.2: PS3

2.3: Philips Hue Bridge

WLAN via the ASUS AP (is NOT configured as a router but only as an AP):

- iPhone

- Digicam

- 2 tablets

- 5 calculators

- Logitech Harmony Bridge

My problem now: As soon as I start one of the TV boxes, I apparently have a gigantic broadcast on that port from the Swisscom router, which completely paralyzes the respective subnets.

You can see this particularly well on the ASUS AP: the moment I start the box (listed as 2.1 above), I have permanent traffic on all (!) Ethernet ports and the WLAN. Even the port to the Philips HUE Bridge constantly shows activity, even though the lamps are not being activated.

This takes a few seconds and then the ASUS AP collapses: the network is still there, but can no longer be used. The same applies to the wired participants. For some reason the router sends out packets that not only go to the TV box but actually flood the network.

This occurs on certain boxes, although interestingly only the network that is connected to the same port on the Swisscom router is affected.

If I simply switch the box off, the game continues for a few minutes and suddenly the router stops… then the network recovers again.

The thing can be reproduced at will, even if only a single device is active on the same network: the connection breaks down. Strangely enough, the box runs smoothly and you can watch TV perfectly, but everything else no longer works (including the WLAN control…).

The effect is also interesting when I connect a switch between the router and, for example, the ASUS AP: This should only forward packets that are explicitly intended for the TV box to it (unicast), otherwise it would be a hub. But right there you can see that the packets also go to the AP pointlessly…

This problem is so new to me, any ideas? I’m a little desperate.

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Good evening WalterB

Thank you very much for the super fast answer, the fact is that the stream from the router goes in both directions via a switch (once via a cheap Netgear, once via ASUS AP).

Unfortunately, I’m not sure whether the ASUS AP can handle this, although it has settings for IPTV.

Which switches are otherwise suitable for this from Swisscom? Any recommendations?

I see that a Netgear Switch is being offered in the shop for 49.- would it be suitable?

Greetings

Nico

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Thank you very much for the great support and that on Sunday evening!:smileyhappy:

I just ordered two of the Netgear switches via Swisscom and hope to be able to solve the problem.

Best regards

Nico

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Thanks for the tip

The unfortunate thing is that in the configuration as a bridge the problem has to be solved beforehand on the AP. However, if the AP/router itself is used as an AP, there is no way to teach the integrated switch IGMP (unfortunately the IPTV field does not exist in this configuration).

In the configuration as a router it would then be possible again:smileyfrustrated:

It has a nice side effect: With the new switch I have enough ports to wire certain devices connected via WLAN:smileyvery-happy:

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Hello everyone

the switches arrived today and solved the problem:smileyhappy:

Thanks again for the quick help:smileyvery-happy:

Best regards

Nico

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