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Wireless Networks Thread, Network flooded. in Technical; Just to add to my week of network problems at about 3pm this afternoon my network experienced a major broadcast ...
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    Network flooded.

    Just to add to my week of network problems at about 3pm this afternoon my network experienced a major broadcast event. Everything ground to a halt and all the switches were going crazy, my machine forze completely and I couldn't do anything.

    Went to server and ran ethereal and found that it was my axis security cameras using SSDP to address 239.255.255.250 with NOTIFY/1.1 in the info part of the scan. Thats all the traffic that was generated.

    Not happy.

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    Re: Network flooded.

    Just found a UPNP setting in the camera browser. Think I'll get rid of that.

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    Re: Network flooded.

    Pretty poor if your switches can't handle multicast though.

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    Re: Network flooded.

    Well I thought I had sorted it but it happned over the weekend (one of the IP cameras hadn't switched its UPNP setting off) and again today with a different broadcast problem so I've spent most of the day updating firmware.

    The documentation of my new switch says it should handle broadcasts but I found that the latest firmware had this fix

    New Features

    Added the options to disable or enable "Block packets with unknown multicast address" on "Enable/Disable IGMP" page.


    Which should help.

    I decided to get a Netgear GSM7224 too and slowly replace the fibre switch by buying modules every now and again.

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    Re: Network flooded.

    Wouldn't putting your cameras on their own VLAN help to prevent the propogation of the broadcast storm?

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