SNMP Issues Cisco WLC

[Ygor_Almeida]

Hi Guys,
I’m trying to grab as much info from a Cisco WLC controller as I can.

But either I’m noob here ( thats a fact ) but i could not grab some information from WLC controller, like the clients connected or hostname/mac … and even the ordinary poll data fails ( i had to hack snmp.inc ) to pass that.

As pointed here, i had to hack to use the -Cc

Cisco WLC polling issue

Due to a bug in Cisco WLC (Cisco won’t fix) LibreNMS suddenly stopped polling our WLC. Error message: Caching OIDs: entPhysicalDescrSNMP[’/usr/bin/snmpbulkwalk’ ‘-v2c’ ‘-c’ ‘COMMUNITY’ ‘-OQUs’ ‘-m’ ‘ENTITY-MIB’ ‘-M’ ‘/home/librenms/mibs:/home/librenms/mibs/cisco’ ‘udp:HOSTNAME:161’ ‘entPhysicalDescr’] Exitcode: 1 Error: OID not increasing: entPhysicalDescr.1008 = entPhysicalDescr.936 The workaround is to use -Cc in snmpwalk, can this option be set for WLC devices only in LibreNMS?

Pass flags to snmpwalk specific to device

I can poll correctly mib’d data with the following from the command line: snmpwalk -Cc -v 1 -m ALL -c public **$hostname** enterprises When trying from LibreNMS I get: Error: OID not increasing: .1.3.6.1.4.1.40989.10.16.20.16.0 = .1.3.6.1.4.1.40989.10.16.1.0.1.0 .1.3.6.1.2.1.1.1.0 = STRING: GLCY SNMP .1.3.6.1.2.1.1.2.0 = OID: .1.3.6.1.2.1.1.2 .1.3.6.1.2.1.1.3.0 = Timeticks: (2726677400) 315 days, 14:06:14.00 .1.3.6.1.2.1.1.4.0 = STRING: .1.3.6.1.2.1.1.5.0 = STRING: .1.3.6.1.2.1.1.6.…

My validate.php file

1. ====================================

2. Component | Version

3. --------- | -------

4. LibreNMS | 22.1.0-45-g2e3584405

5. DB Schema | 2021_12_02_113537_ports_stp_designated_cost_change_to_int (234)

6. PHP | 7.4.3

7. Python | 3.8.10

8. MySQL | 10.3.32-MariaDB-0ubuntu0.20.04.1

9. RRDTool | 1.7.2

10. SNMP | 5.8

11. ====================================

• [[32mOK[0m] Composer Version: 2.2.6

12. [[32mOK[0m] Dependencies up-to-date.

13. [[0;32mOK[0m] Database connection successful

14. [[0;32mOK[0m] Database schema correct

15. [[1;33mWARN[0m] Your local git contains modified files, this could prevent automatic updates.

16. [[1;34mFIX[0m]:

17. [1;34mYou can fix this with ./scripts/github-remove[0m

18. Modified Files:

19. bootstrap/cache/.gitignore

20. includes/definitions/discovery/ciscowlc.yaml

21. includes/snmp.inc.php

22. logs/.gitignore

23. rrd/.gitignore

24. storage/app/.gitignore

25. storage/app/public/.gitignore

26. storage/debugbar/.gitignore

27. storage/framework/cache/.gitignore

28. storage/framework/cache/data/.gitignore

29. storage/framework/sessions/.gitignore

30. storage/framework/testing/.gitignore

31. storage/framework/views/.gitignore

32. storage/logs/.gitignore

33. [[1;31mFAIL[0m] We have found some files that are owned by a different user than ‘librenms’, this will stop you updating automatically and / or rrd files being updated causing graphs to fail.

34. [[1;34mFIX[0m]:

35. [1;34msudo chown -R librenms:librenms /opt/librenms[0m

36. [1;34msudo setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/[0m

37. [1;34msudo chmod -R ug=rwX /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/[0m

38. Files:

39. /opt/librenms/rrd/smokeping/__sortercache/data.lnmsFPing-0.storable

40. /opt/librenms/rrd/smokeping/__sortercache/data.lnmsFPing-1.storable

41. /opt/librenms/rrd/smokeping/storage

42. /opt/librenms/rrd/smokeping/storage/brstgsao0001_sika_com.rrd

And
Discovery
hxxps:// p. libren. ms/view/dfb4a3ef
Poller
hxxps:// p .libren. ms/view/230ea44d

[Ygor_Almeida]

I would like to have extra data and nice graphs on those pages

snmpwalk/bulk looks like fails because of that
https://quickview.cloudapps.cisco.com/quickview/bug/CSCvn76033

[Ygor_Almeida]

Still looking for help on this