C-210-M2 UCM Performance Issues

[iwearing]

Hi,

I am in the process of migrating/building a new UCM cluster on 2 x C210 Servers.

The first C210 has 2 x UCM V8.6 VMs created and operational. I have created another 2 x VMs on the 2nd of my C210 servers. Performance when instaling UCM V8.6 is very slow (almost unusable).

Both C210 servers are identical in build, HUU installed, ESXI 4,1, LRO disabled. VMs were created using the same Cisco OVA templates. No hardware errors are apparent on the server with slow performance issues.

Any help would be appreciated.

thanks

Ian.

[Gajanan Pande]

Ian,

These issues are more or less caused by corrupt OVA templates. I'd either download the OVA template once again or manually allocate the resources by looking at first server & try installing it.

Please let me know how it works out for you.

GP.

Pls rate helpful posts !!

[iwearing]

GP,

Thanks for the suggestions. I was certain that the OVA templates were fine as I used them on 1st of the C210 Server VMs. However I tried again manually and still had the same problems.

Eventually I re-installed ESXI and the issue appears to be resolved.

Ian.

[Gajanan Pande]

Yep, perfect. That's ( ESXi ) definitely the next logical point of troubleshooting.

Thanks a lot for posting the resoltion here, +5 to you.

Cheers !!

GP.

[Leonardo Santana]

Hello Guys

I entering now in this virtualized world, what is LRO?

Thanks

[Aaron Harrison]

Hi

It's an optimisation technique used by VMware - basically as I understand it it bundles several small TCP packets into a larger one, as it's faster to move one larger chunk of info than lots of smaller ones. All very nice, unless those packets are time critical such as heartbeats etc or presumably other stuff. CUCM etc use lots of small packets. That's why the recommendation is to turn it off...

There are probably better explanations available via google :-)

Aaron

[Leonardo Santana]

Thanks aaronharrison