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тАО03-12-2007 09:35 PM
тАО03-12-2007 09:35 PM
2524 switch CPU 91% after receiving invalid multicast from cisco
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тАО03-13-2007 04:55 PM
тАО03-13-2007 04:55 PM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
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тАО03-13-2007 10:40 PM
тАО03-13-2007 10:40 PM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
How does that much up with the Procurve being the source of the traffic? From the information you've posted it just looks like the Cisco has gone loco and is crapflooding your LAN. If that was just a brief event, how do the traffic patterns alter after?
If rebooting the Procurve fixes it, maybe just pulling the link down briefly would too.
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тАО03-13-2007 11:15 PM
тАО03-13-2007 11:15 PM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
Now what I found after deeper investigation: there are three 2524 switches connected into chain and STP is running. In spite of gigabit port 25 (connected to another 2524) is blocked by STP on one of the switches I see traffic still passing that port from other switch, SNMP monitoring shows that, looks like multicast packets get into the loop and flood all three switches. All 3 CPUs utilization is almost the same- 91%.
Now question: is that right that STP blocked port is still forwarding some non standard multicast packets?
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тАО03-13-2007 11:23 PM
тАО03-13-2007 11:23 PM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
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тАО03-14-2007 03:09 AM
тАО03-14-2007 03:09 AM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
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тАО03-15-2007 08:33 AM
тАО03-15-2007 08:33 AM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
port.
It seems it is not fixed properly, some type of packets are still passing blocked port. Any comments? I will submit software case tomorrow.
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тАО03-15-2007 10:38 AM
тАО03-15-2007 10:38 AM
Re: 2524 switch CPU 91% after receiving invalid multicast from cisco
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тАО03-15-2007 06:52 PM
тАО03-15-2007 06:52 PM