04-24-2017 07:24 AM - edited 03-08-2019 10:18 AM
Dear All,
i have one C4500 as a core switch connected to access switch 3750X (6 switches as stack) so we have received this log on C4500:
001201: Apr 23 20:35:36.121: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 2395 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/1 in vlan 207
001202: Apr 24 03:17:16.226: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 8460 times)Packet received with invalid source MAC address (00:00:00:00:00:00) on port Te1/1 in vlan 207.
when this message happened one of application is hanging "apatchi server"?
can anyone help to troubleshoot and olve this issue?
Thanks
04-24-2017 07:40 AM
Hello,
check the NIC of the Apache server, it could be faulty. You can configure the C4500 to drop packets with a source of 00:00:00:00:00:00"
C4500#conf t
C4500(config)#vlan 207
C4500(config-vlan-207)#static-mac-address 00:00:00:00:00:00 drop.
04-24-2017 07:43 AM
Hi Georg,
tha apache server connected to C4500 and the invalid mac address coming from the uplink to access switch. is there any way to trace this mac address?
thanks
04-24-2017 07:49 AM
Hello Mohammed,
your best option is probably to use Wireshark to trace the MAC address...
04-24-2017 07:57 AM
Hi Georg,
thanks for your reply.
do you want me to use the source is vlan 207 or ten1/1?
do you thing this issue from this invalid mac address?
Thanks
04-24-2017 08:27 AM
Hello,
source should be Vlan 207...
Unless you have some sort of multicasting configured on your network, the all zero MAC address is most likely invalid...
04-24-2017 08:40 AM
Hi,
we are not enable any multicast, but the issue happened once we receive this log.
04-24-2017 12:59 PM
Hi. Do you have IP Device Tracking enabled on your 3750-x stack?
Andy
04-28-2017 01:16 AM
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