Problem adding Cisco Call Managers to IP SLA Manager that are already being polled by NPM?

Question

Hi,

My organisation has recently invested in an upgrade to our existing NPM/Cirrus toolset and brought us kicking and screaming up to NPM 10.1.2 and also the NTA and IP SLA Manager modules.

We already have all our Cisco Call Managers (or Unified Communications Managers as they are now) being polled in NPM but when I try and add them through the 'Manage CallManager Nodes' screen I get the error "xxxxx does not respond with the SNMP credentials provided" when I know that the SNMP credentials NPM is using are valid as the device is already being polled and there are no host/subnet restrictions.

Needless to say this has got my VoIP TDA and myself pretty stumped as we didn't expect to fail at the first hurdle.
When listing the devices by 'machine type' on the 'Add CallManagers' screen they are listed as 'Cisco MCS 7845H' and we're running Call Manager version 7.1.3.32900-4 and IP SLA Manager 3.5.1.

Any advice here would be gratefully received.

TIA

Matthew

cjdavis7782 · Answer

I had the same issue when adding my CUCM nodes to IP SLA,  We have 5 pollers and it turns out 3,4, and 5 weren't running the IP SLA services, but were the ones pulling my call managers.  I moved my nodes over to to poller one and tried adding it again and it worked.

bgfl-tech · Answer

Hi,

I believe so but I've noticed some unsual behaviour in NPM that may be the root of this problem. If I add both the read-only community string and the read-write string in the 'Node Management' > 'Edit Properties' screen and click test I get 'Test Successful!' but the 'does not respond with the SNMP credentials provided' error in IP SLA Manager.

If I enter the read-write community string on its own and leave the community field blank and test I get 'test failed' and the 'unable to validate this node with the supplied SNMP credentials' in NPM.

However, if enter either the read-only string or the read-write string in the community field and leave the read-write field blank I'll get 'Test Successful!' but with the read-write string in the community field I get the 'does not respond with the SNMP credentials provided' error.

I've just tried with the read-write string in both the community and read-write community fields which got a 'Test Successful!' in NPM but a 'does not respond with the SNMP credentials provided' error in IP SLA Manager?

I'm pretty sure I've run out of combinations to try - should the read-write string on its own get a successful test or will a blank community field always result in a fail?

mcbridea · Answer

Are you adding the correct read/write credetentials? NPM only requires read only to poll. IP SLAM needs read/write to create operations.