http://www.dslreports.com/forum/HELP-Strange-issue-with-locally-assigned-MAC-address-26387083 en Thu, 24 Mar 2022 20:26:18 EDT Thu, 24 Mar 2022 20:26:18 EDT http://www.dslreports.com/forum/Re-HELP-Strange-issue-with-locally-assigned-MAC-address-26389284
Second sk1939, a "show run" and a "show ver" would help out, but I'm not aware of any
issues such as this off the top of my head.

Regards]]> http://www.dslreports.com/forum/Re-HELP-Strange-issue-with-locally-assigned-MAC-address-26389284 Mon, 03 Oct 2011 23:49:15 EDT http://www.dslreports.com/forum/Re-HELP-Strange-issue-with-locally-assigned-MAC-address-26388010 http://www.dslreports.com/forum/Re-HELP-Strange-issue-with-locally-assigned-MAC-address-26388010 Mon, 03 Oct 2011 17:51:44 EDT http://www.dslreports.com/forum/HELP-Strange-issue-with-locally-assigned-MAC-address-26387083
I have a customer who purchased a new set of Dell PC's.

They all have a MAC with the first byte set to 5 (being 0101). Hence we can tell right from the start that this MAC is locally assigned. (the full mac is 5cac.6f72.f76e).

So the end user plug in the computer, gets assigned an IP via dhcp, ARP request are passing side to side, the host arp table is created...but, they can't ping the default gateway. They can ping the switch management IP (same subnet) no problem.

If they use SMAC and create a fake universal MAC, no problem.
It is connected to a 3550 uplinking to a ME3400 (no access, telco equipment).

Any one has seen anything as such before?]]> http://www.dslreports.com/forum/HELP-Strange-issue-with-locally-assigned-MAC-address-26387083 Mon, 03 Oct 2011 14:14:58 EDT