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Community Member

error msg on cat 5000

Hi,

I have 2*Cat 5000 configured to run HSRP for a specified VLAN. Recently I have been receiving the error message on my Cat 5000:

“SYS-4-P2_WARN: 4/Invalid traffic from multicast source address 7b:6e:91:10:00:00 on port 4/59.”

I understand that this is generated when the switch receives packets with a multicast MAC address as the source address. I also understand that 4/59 is virtual port associated with my HSRP configuration.

My problem right now to locating the server that is generating this error message. Could anyone advise how do I go about finding out which server is responsible? Can I conclude the server is attached to module 4 the virtual port is 4/59? (Module 4 is tied to the VLAN configured for HSRP)

Thanks

3 REPLIES
Bronze

Re: error msg on cat 5000

The easiest way would be to take the MAC address that the error message returned and match it up to the server that is sending the traffic. You could probably put a sniffer on the segment to see what device is sending the traffic.

Community Member

Re: error msg on cat 5000

Hi kmarrero,

Thanks for your help here. I've tried that prior to sending the question in NPC. There's no MAC that starts with 7b:6e:91..

For comments.

Thanks

Community Member

Re: error msg on cat 5000

You probably have a 5410 blade installed in slot 4. Port 4/58, 4/59, and 4/60 are the internal gig ports between the backplane and the 5410 blade. If that is the case, the traffic is rec'd from one of the 9 ports on that module. So, I suggest to span those ports and find the culprit. If allowable, suggest to unplug one of those ports at time until the messages disappear. See link below for more details.

http://www.cisco.com/warp/customer/473/176.html#subtopic1m

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