04-16-2019 05:11 AM - edited 04-16-2019 05:13 AM
I need assistant as I want to deploy single expressway MRA for 2 different UC clusters connected over intercluster trunks
What are the restrictions ?
Should the internal domain be identical on both clusters
Should the external domain be identical on both clusters
Should users on different cluster be able to chat each other
Can u provide me with a guide illustrate these points as i found only guide with configuration of same domain internal and external
06-04-2019 06:22 AM
Hello Ahmed,
Yes this is possible to configure single pair of expressway with multiple CUCM clusters.
This is also mentioned in MRA deployment guide under " Multiple Clustered Network Elements"
The things to be noted that-
-both CUCM cluster publishers you need to add on expressway C
- both cluster should be in same domain.
- You need to assign home cluster for users under end user config
- most important Inter cluster lookup service should be enabled, please see the below link for reference-
Thanks
Please rate if it is helpful....
06-09-2019 02:30 AM
@Anurag Srivastava1 Thanks for your Reply
Regarding this note( both cluster should be in same domain.)
in our deployment the clusters are in different domain
What is the solution then ?
06-09-2019 11:10 PM
Hello Ahmed,
In that case whether your users are using same domain for login through MRA? or different domains?
Both ways it is possible.
- If different domains then you should make collab-edge SRV for that (second) domain as well and need to resolve it to your exp-E FQDN or IP.
- Also you need to add that domain in exp-E cert SAN list.
- for different domains you need to add _cisco-uds and _cuplogin in internal DNS for their respective servers/clusters
- You need to add both domains in exp-C
- Also you need to add both CUCM and IM&P clusters in exp-C
I am not sure how many users a single pair can support for MRA, but it should work
Thanks.
Please rate if it is helpful..
04-29-2020 08:39 AM - edited 04-29-2020 08:40 AM
Hello, did you implemented this topology? with two or more CUCM clusters, each one with its own domain, sharing the same Expressway pair?
Do you know if it is a supported scenario?
Thanks
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