Management IP WLC Cisco 9124 AXI-E

[juan-sierra]

Hello Cisco mates!

I have an issue with my embedded controller Cisco AP 9124 AXI-E. I have 4x Cisco AP9124 AXI-E configured in the same subnet (10.100.1.0/24). One of them is configured as controller and assigned a WLC Management IP, in my case 10.100.1.30. They re connected trough a cisco switch CBS350 16p 2Gb Eu, in the same VLAN and switch. 

I have tested this in my lab and everything is okay, the APs can join to WLC perfectly.

When we connect in the same switch the APs, each AP is visible among them, but no one can reach the WLC Management IP. I a pinged between an AP to WLC AP and I can reach the AP IP (10.100.1.28) but I can't reach the management WLC IP (10.100.1.30) I have a lot of loss of configuration, there's 1/10 succeful pings (Uploaded a test). 

I have checked if there's a duplicated IP, tried with another management IP with no succes ping, changed the cables but there's no reachable IP etc.

I connected the APs between a L2 switch and there's no conection issues.

I'm confused about what's happening, I guess there's something wrong configured in the network / customer switch.

Network diagram updated.

Thank you,

Best regards.

[soportefibratel]

Have you checked the ports?

[juan-sierra]

Hello,

Just found where's the issue. 

The company that manage the network devices, found that the mac is duplicated in the network, is configured in the core switch as vrf with the same mac-Address as the WLC.

Now I tried to change the mac-address assigned to interface, and it's not possible by editing the port, it's not taking the change.

interface GigabitEthernet0
mac-address 0000.5e00.0101
ip dhcp client client-id GigabitEthernet0
ip dhcp client broadcast-flag clear
ip address 10.100.1.30 255.255.255.0
negotiation auto

Do you guys know a solution for this? 

Thank you
Best regards.

[marce1000]

 - @juan-sierra  - Those are not intended to be changed and are used by the VRRP redundancy mechanism that the EWC platform uses ; so if that one is seen elsewhere it can be considered normal. Remove that from the port configuration ,

 M.

[juan-sierra]

It's cannot be changed and also deleted. When I try to change by cli in the interface configuration, the changes didnt apply.

Thank you,

Best regards.

[marce1000]

   - Pay attention to this configuration example https://www.cisco.com/c/en/us/td/docs/wireless/controller/ewc/17-8/config-guide/ewc_cg_17_8/overview_of_the_controller.html#task_gs1_qzh_kpb  (scroll down too) , verify your settings ,

 M.