VLAN Details are not available in epmMacEp API response

[DeepakPati31706]

When I executed show mac address-table command for a node from APIC I got vlan,mac,interface information in the cli output.But when I executed API request in APIC for empMacEp command,I got mac and interface details only but no vlan information.Below is the sample example:

CLI output

---------

VLAN     MAC Address      Type      age     Secure NTFY Ports/SWID.SSID.LID

---------+-----------------+--------+---------+------+----+------------------

* 10       0050.5666.XXXX    dynamic      -       F    F    po3

API Response

------------

{
"epmMacEp":{
"attributes":{
"addr":"00:50:56:66:XX:XX",
"childAction":"",
"createTs":"2020-09-22T18:58:50.516+00:00",
"dn":"topology/pod-X/node-XXX/sys/inst-overlay-X/bd-[vxlan-16777209]/db-ep/mac-00:50:56:66:XX:XX",
"flags":"local,mac",
"ifId":"po3",
"modTs":"never",
"name":"",
"pcTag":"any",
"status":""
}
}
}

So,I would like to know how to get the vlan details for corresponding mac/interface for a node in Cisco ACI using API

Thanks,

Deepak Ranjan Pati

[Sergiu.Daniluk]

Query the fvCEp class, and you will find the encap vlan as well.

Stay safe,

Sergiu

[DeepakPati31706]

Hi Sergiu,

Thanks for the reply.I tried querying the class with existing command as below but it failed.

https://<ip>:<port>/api/node/class/topology/pod-X/node-XXX/epmMacEp.json?rsp-subtree=children&rsp-subtree-class=fvCEp

I tried with below API also which returned empty result.

https://<ip>:<port>/api/node/class/topology/pod-X/node-XXX/fvCEp.json

Can you please tell me what is the right way to send the request to APIC while quering fvCEp Class.

Thanks,

Deepak Ranjan Pati

[Sergiu.Daniluk]

Hi Deepak,

First, I just noticed that you are looking at "show mac address-table" output on the leaf switch. DO NOT use this command as it is not relevant in the ACI. Use the "show endpoint" command.

Second, I tested the class you are using "epmMacEp" and it should display the vlan as well:

Leaf202# moquery -c epmMacEp | grep dn
dn           : sys/inst-overlay-1/bd-[vxlan-16777209]/db-ep/mac-D4:6D:50:DC:10:1B
dn           : sys/ctx-[vxlan-2293761]/bd-[vxlan-16121799]/vlan-[vlan-121]/db-ep/mac-D4:6D:50:DC:10:1B
dn           : sys/ctx-[vxlan-2293761]/bd-[vxlan-16121799]/vlan-[vlan-120]/db-ep/mac-00:50:56:8A:75:99
dn           : sys/ctx-[vxlan-2293761]/bd-[vxlan-16121799]/vlan-[vlan-120]/db-ep/mac-00:22:BD:F8:19:22
dn           : sys/ctx-[vxlan-2293761]/bd-[vxlan-16121799]/vlan-[vlan-120]/db-ep/mac-88:F0:31:00:74:C9
dn           : sys/ctx-[vxlan-2293761]/bd-[vxlan-16121799]/vlan-[vlan-120]/db-ep/mac-2C:D0:2D:C6:06:D6
dn           : sys/ctx-[vxlan-2785282]/bd-[vxlan-15269819]/db-ep/mac-8C:60:4F:DD:95:C1

As you can see, there are 2 EP for which I do not have any vlan mentioned, and that is expected because:

1. D4:6D:50:DC:10:1B - is learned through overlay-1 VRF. This is how it looks in endpoint table:

7/overlay-1                          vxlan-16777209    d46d.50dc.101b L                      eth1/1

2. 8C:60:4F:DD:95:C1 - is learned in vxlan

106/Tenant:VRF                  vxlan-15269819    8c60.4fdd.95c1 L                     eth1/23

Regarding the API call for fvCEp, you need to send it to APIC not to a Leaf.

Hope it helps,

Sergiu