Topology diagram missing due to duplicate AP ID

Aruba Employee
Problem:

This article helps understand why the topology diagram in Airwave does not show any information. This is one instance where the issue occurs due to duplicate AP ID's created. The issue happens when a device goes down at some point and the IP got reassigned to a different MAC address and since topology can only handle device based on MAC address the diagram does not show any devices.



Diagnostics:

If we inspect the browser element from the Topology page we can see the following error:

Getting Error on console  :

module_frappe.1507566769.js:107 Error: Cannot add item: item with id 300 already exists

    at n._addItem (module_frappe.1507566769.js:18798)

    at n.add (module_frappe.1507566769.js:18798)

    at new n (module_frappe.1507566769.js:18798)

    at module_frappe.1507566769.js:18938

    at module_frappe.1507566769.js:119

    at n.$eval (module_frappe.1507566769.js:133)

    at n.$digest (module_frappe.1507566769.js:130)

    at n.$apply (module_frappe.1507566769.js:133)

    at h (module_frappe.1507566769.js:87)

    at K (module_frappe.1507566769.js:91)

 

We also can run an API query to the server using the following link:

https://<IP or Hostname of Airwave>/topology/getTopology

Sample output shown below:

{

                              "apID": 300,

                              "name": "MAN-Library-MDF",

                              "role": "Switch",

                              "model": "Juniper Virtual",

                              "ip": "192.168.213.130",

                              "mac": "3C:8A:B0:EA:BD:03",

                              "folder": {

                                             "id": 95,

                                             "name": "Top/Buildings/Horace Mann/Horace Mann Switches"

                              },

                              "HealthInfo": {

                                             "health": "good",

                                             "reason": []

                              }

               },

               {

                              "apID": 300,

                              "name": "MAN-Library-MDF",

                              "role": "Switch",

                              "model": "Juniper Virtual",

                              "ip": "192.168.213.130",

                              "mac": "3C:61:04:6F:46:03",

                              "folder": {

                                             "id": 95,

                                             "name": "Top/Buildings/Horace Mann/Horace Mann Switches"

                              },

                              "HealthInfo": {

                                             "health": "poor",

                                             "reason": [{

                                                            "attribute": "up",

                                                            "value": 0

                                             }]

                              }

               },

Notice that the AP ID is same whereas the MAC address of the device is different. This will cause the Topology page not to show any info due to conflict.



Solution

We need to determine the topology service currently running and restart the same.

This can be done from UI by simply navigating to System-->Status page and restarting the AMP services by clicking the "Restart AMP" button. 

Topology service can also be done from Airwave CLI by determining the process ID. Sample shown below.

[root@airwave-test mercury]# daemons | grep Top
 6296  6295  6292  0.4  4.2   341164   1-02:04:49 Topology
[root@airwave-test mercury]# kill -9 <process ID>

In the above case the process ID = 6296

Version history
Revision #:
2 of 2
Last update:
2 weeks ago
Updated by:
 
Labels (1)
Contributors
Search Airheads
cancel
Showing results for 
Search instead for 
Did you mean: