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aalejo
Contributor

ELM Co-resident and static MAC address

Hi

 

Does someone knows if co-resident ELM also requires and static MAC address on the CUCM?

 

Thanks

Alex

3 REPLIES 3
Jaime Valencia
Hall of Fame Cisco Employee

Products that handle their licenses via ELM/PLM no longer have a License MAC, and the MAC from the vNIC has no relationship to licensing. The licenses are tied to the ELM/PLM server.

HTH

java

if this helps, please rate

Hi Jaime

ELM uuid is calculated (partially) using the MAC address of the underneath server. In case of a co-resident server, ELM uses CUCM mac address (VMware assigned MAD address). VMware allocate a dynamic mac address (by default) to each VM. That MAC can change over time (when specific changes are made) and as a result  an ELM uuid will change and  will invalidate all licenses.

That's why I think MAC address on a co-resident CUCM (CUCM+ELM) should be static.

 

My logic is correct?

Alex.

 

 

 

Hi Alex, 

 

what can be said is that UUID gets changed when you move ELM from one server to other server? . In that case, license needs to be re-hosted.

 

https://supportforums.cisco.com/document/9869241/understanding-enterprise-license-manager

 

regds,

aman

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