ACS 5.3 TWO mac address

[mhuaynate]

Hi friend,

I have a solution of thre ACS.. one primary and two secondaries. My customer report me that in port of the switch where is connected the ACS show two mac address

+++ Switch CORE Configuratión +++

SWSCSISCORE01#show running-config interface g3/37

description ++ ACS San Isidro ++

switchport

switchport access vlan 10

spanning-tree portfast edge

SWSCSISCORE01#show mac address-table interface g3/37

Legend: * - primary entry
age - seconds since last seen
n/a - not available
S - secure entry
R - router's gateway mac address entry
D - Duplicate mac address entry

Displaying entries from DFC linecard [1]:

vlan mac address type learn age ports
----+----+---------------+-------+-----+----------+-----------------------------
10 5cf3.fc25.8489 dynamic Yes 145 Gi3/37
10 5cf3.fc25.8487 dynamic Yes 145 Gi3/37

The interface ethernet of the switch has two mac address ? i dont kown

and I have enable a DHCP server the other interface cath another IP adress example ?

5cf3.fc25.8487 150.50.2.190

5cf3.fc25.8487 150.50.50.2

its normal ?

ACS configuration port 0

!

interface GigabitEthernet 0

ip address 150.50.2.190 255.255.0.0

!

thank for all.

Marco.

[Daniel Kohls]

Good Morning,

Yes, this is more ore less "normal". You are hitting CSCtj81255 (at least if you´re using 1121 appliance). The secondary MAC Address is the BMC (Baseboard Management Controller) which is by default activated and is getting an IP Address via DHCP by default.

Deactivating the BMC is not possible, but there is a workaround which worked quite well in our implementation.

Edit the BMC settings in the BIOS to disable DHCP and set a static IP Address in a range which does not intervene with your IP Address layout in your network.

I hope this have been quite informative for you.

Greetings,

Daniel