Hi Christof,<br><br>Is IGMP snooping enabled in VLAN 50 ? If so, check that you have an IGMP querier enabled in this VLAN. Otherwise IGMP snooping entries will age out after 260 sec (host timeout) and no mcast frames will be forwarded to these ports. Maybe this is what you are experiencing here.<br>
<br>Alternatively, you can try to increase the IGMP snooping host timeout (this might be a simpler solution in your context):<br> configure igmp snooping timer <router_timeout> <host_timeout> {vr <vrname>}<br>
<br>Hope this helps.<br><br>Julien<br><br><div class="gmail_quote">Le 26 janvier 2012 09:23, Huettner, Christof <span dir="ltr"><<a href="mailto:Christof.Huettner@megatech-communication.de">Christof.Huettner@megatech-communication.de</a>></span> a écrit :<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="DE">
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<p class="MsoNormal">Hello,<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">have a strange problem.. i thougth, Multicast isnt really a problem in the same vlan. Ist by default activated?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">I have a touchpanel (KNX Touchpanel) connected to the BlackDiamond 8806 in VLAN 50. There is a Uplink (LACP, tagged all vlans) to the Summit 450. On the Summit there is a KNX/IP Router connected who takes the KNX commands..<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">On the KNX Touchpanel is a Timer configured, that every day at 11 pm, 4 commands (multicast commands) are send to the summit 450 and the connected KNX/IP Router. Its a strange thing, in most case, the KNX Router gets only 2-3 commands…
sometimes it works fine.. but in most cases, there are only 2 commands who works..<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Ipmcforwarding is enabled.. maybe someone have same issues?<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Regards Chris<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:gray">Christof Hüttner | Netzwerkspezialist (Network Specialist)</span></b><span style="font-size:10.5pt;font-family:Consolas"><u></u><u></u></span></p>
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