APIC controller can't see Leaf switch

[tinhnho123]

Hello,

I have 2 leaf switches model 9372PX which connected to my APIC controller port's  e2/1 and e2/2 (I have 3 APIC server M1 but stood up  only 1 server for now). I went to FABRIC - INVENTORY - Fabric membership, I don't see any Leaf was discovered in there. 

I even moved the SFP+ transceivers on the Leaf switches to different ports and rebooted both Leaf and APIC server, but still got the same result.

Any ideas why the APIC doesn't see the leaf?  Btw, This is a brand new setup.

Thanks. 

Note: the attachment is what I see from the controller. 

[lpember]

Can you issue a 'show lldp neighbor' on the leafs and paste the output here?

[tinhnho123]

Hello,

I'm on the console port now but it doesn't seem to work with 'show lldp neighbor' command.

switch# show lldp neighbor
^
% Invalid command at '^' marker.
switch#

I've suspected it might not on the right ACI image, Could you tell me if it runs on the right image from the 'show version'? if not what image I should run for this leaf? 

Thanks.

[Tomas de Leon · Accepted solution]

You are running the NXOS image not the ACI Image.

ACI N9K Firmware

https://software.cisco.com/download/release.html?mdfid=286279782&flowid=71683&softwareid=286278844&release=11.2(1i)&relind=AVAILABLE&rellifecycle=&reltype=latest

Converting from Cisco NX-OS to ACI Boot Mode

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/upgrade/guide/b_Cisco_Nexus_9000_Series_NX-OS_Software_Upgrade_and_Downgrade_Guide_Release_6x/b_Cisco_Nexus_9000_Series_NX-OS_Software_Upgrade_and_Downgrade_Guide_Release_6x_chapter_010.html

I hope this helps!

T.

[tinhnho123]

Thanks for the reply. I was able to resolve it. 

[Nilay Patel]

My organization is introducing ACI, I am facing similar issue,

- not able to see any leaf from APIC

- Leaf is in ACI mode

- Cables are properly connected 

- I am getting following error

F1410

Properties
Fault Code:
F1410
Severity:
critical
Last Transition:
2016-12-01T13:58:52.293+00:00
Lifecycle:
Raised
Affected Object:

topology/pod-1/node-1/lon/clSzEqObst-1-expand-no_expansion_contender-2-none-undefined-undefined
Description:
Cluster cannot continue to Expand from its current size 1 for the following reason: No expansion contender. The controller ID is 2, the service ID is None, the internal database partition (shard) ID is Undefined and the replica ID is Undefined
Explanation:
This fault occurs when the operational size for a controller cluster can not reach the configured target size.

[Blake Parker]

You may need to ensure that you do not have LLDP enabled on the VIC of the APIC.  Log into the CIMC web interface and under the system settings look at the VIC configuration.  Make sure that Enable LLDP is not checked.  If it is, uncheck it and reboot the APIC.

After rebooting the APIC should be able to detect the leaf switches.  Once you are able to detect the directly connected switches add them to the fabric and then the rest of the fabric switches should start being detected.  Once you have added all fabric switches to the fabric, you can then run the setup of the additional APIC's.

[Nilay Patel]

Bingo.... that's it. Awesome help. It fixed. I was on vacation. Its up & running. After following above instruction, all the leaf & spine discover right away.

Thanks a lot....

Nilay

[Robert Burns]

FYI - This is a known issue with certain APICs manufactured within a certain date range.   A few hundred units were incorrectly configured with LLDP enabled on the VIC. 

This is tracked as: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCva28506

Robert

[Nilay Patel]

Thanks Robert for this useful information.

[strattner]

Thank you! I had to re-install ACI from scratch (well, wanted to after having to move to a new network closet), and I could not get the fabric to re-initialize. Tried a bunch of stuff until I stumbled on this page and sure enough the VIC adapter had LLDP enabled. I do not know how the APICs worked originally, but they had been through multiple upgrades since I first installed them. In any case, thank you for helping me avoid opening a support ticket.

[akjain3]

Facing a similar issue, and LLDP is not checked still leaf are not getting discovered. ANy idea how to fix it?

[glennake1]

You need to increase the size of your APIC cluster, this guide will tell you how:

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/kb/b_KB_Cluster_Management.html#task_3F7041739BD147B3A3BA9C2EA42115F8

[vladimirgomez1]

Hello Nilay,

Have you been able to resolve this issue? I am experiencing the very same issue without outlook so far, thanks for any advice.

Cheers,

Vlad.