topic Re: Invalid traffic from multicast source address in Wireless https://community.cisco.com/t5/wireless/invalid-traffic-from-multicast-source-address/m-p/987272#M220317 <HTML><HEAD></HEAD><BODY><P>This syslog message is generated when the switch receives packets with a multicast MAC address as the source MAC which is not a standards compliant behaviour. This is just informational message doesnt affect performance in any way. Using a sniffer try identifying the station that is causing this behaviour.</P></BODY></HTML> Mon, 10 Mar 2008 21:20:55 GMT irisrios 2008-03-10T21:20:55Z Invalid traffic from multicast source address https://community.cisco.com/t5/wireless/invalid-traffic-from-multicast-source-address/m-p/987271#M220316 <P>Greetings all,</P><P></P><P>I am receiving these error msgs (WARN: 1/Invalid traffic from multicast source address 4b:15:e6:d7:00:d0 on port 2/18) on my access switches referencing the ports that connect to my 3 WLC's at 2 different campus locations. </P><P></P><P>The WLC's are 4402 (25) with 4.0.217 code.</P><P></P><P>Recommended that we upgrade to 4.0.219 but don't see any reference to these errors being fixed in the Release notes. Before I go through the process of upgrading, has anyone seen these, and know of the cause/fix?</P><P></P><P>Thanks,</P><P></P><P>William</P><P> </P> Sat, 03 Jul 2021 22:29:25 GMT https://community.cisco.com/t5/wireless/invalid-traffic-from-multicast-source-address/m-p/987271#M220316 william.weir 2021-07-03T22:29:25Z Re: Invalid traffic from multicast source address https://community.cisco.com/t5/wireless/invalid-traffic-from-multicast-source-address/m-p/987272#M220317 <HTML><HEAD></HEAD><BODY><P>This syslog message is generated when the switch receives packets with a multicast MAC address as the source MAC which is not a standards compliant behaviour. This is just informational message doesnt affect performance in any way. Using a sniffer try identifying the station that is causing this behaviour.</P></BODY></HTML> Mon, 10 Mar 2008 21:20:55 GMT https://community.cisco.com/t5/wireless/invalid-traffic-from-multicast-source-address/m-p/987272#M220317 irisrios 2008-03-10T21:20:55Z