Hello, suddenly we observed very weird situation on our core switch.
We have end-to-end configured vlan 176 from Edge to Access switches. We can see all hosts participated in this vlan in mac-addresses table on the Edge switch:
EDGE#sh mac address-table dynamic vlan 176
Unicast Entries
vlan mac address type protocols port
---------+---------------+--------+---------------------+-------------------------
176 0006.6705.0c74 dynamic ip,ipx,assigned,other Port-channel8
176 000c.2932.0a9a dynamic ip,ipx,assigned,other Port-channel8
176 000c.294f.9410 dynamic ip,ipx,assigned,other Port-channel8
176 000c.2972.df75 dynamic ip,ipx,assigned,other Port-channel8
176 000c.2996.b810 dynamic ip,ipx,assigned,other Port-channel8
176 000c.29b1.11ba dynamic ip,ipx,assigned,other Port-channel8
176 3417.ebe9.d043 dynamic ip,ipx,assigned,other Port-channel8
176 3417.ebe9.d045 dynamic ip,ipx,assigned,other Port-channel8
176 842b.2b15.180d dynamic ip,ipx,assigned,other Port-channel8
176 b82a.7237.1728 dynamic ip,ipx,assigned,other Port-channel8
176 b82a.7237.172b dynamic ip,ipx,assigned,other Port-channel8
176 b82a.7237.1a14 dynamic ip,ipx,assigned,other Port-channel8
176 b82a.7237.1a17 dynamic ip,ipx,assigned,other Port-channel8
176 b8ac.6f8d.808e dynamic ip,ipx,assigned,other Port-channel8
But on the core switches which are stacked Dell N4032F I can see even half of those mac-addresses:
CORE#show mac address-table dynamic vlan 176
Aging time is 300 Sec
Vlan Mac Address Type Port
-------- --------------------- ----------- ---------------------
176 0006.6705.0C74 Dynamic Te1/0/10
176 000C.2932.0A9A Dynamic Po10
176 000C.2996.B810 Dynamic Po10
176 3417.EBE9.D043 Dynamic Po20
176 3417.EBE9.D045 Dynamic Po20
176 842B.2B15.180A Dynamic Po20
176 842B.2B15.180D Dynamic Po20
176 84B2.6137.F147 Dynamic Po8
176 B8AC.6F8D.808E Dynamic Te1/0/5
For example mac-address 000c.294f.9410 not exist on core switch, but actually it's connected to ACCESS1 (refer to attached diagram )
