[cisco-voip] Expressway MRA question

[James Buchanan]

Also, regarding your DNS SRV, just pick a cluster to return in the query
and ILS takes it from there.

Check out the DNS section in this doc:
http://www.cisco.com/c/en/us/support/unified-communications/expressway-series/products-installation-and-configuration-guides-list.html

Thanks,

James

On 12 Mar 2017 16:56, "Ahmed Abd EL-Rahman" <Ahmed.Rahman at bmbgroup.com>
wrote:

> Also if the Expressway supports working with multiple CUCM/IMP clusters,
> how can it determine to which cluster it will direct the user client
> registration request ?
>
>
>
> Also as mentioned there is single DNS and single domain for the whole 4
> clusters, so how the SRV records will be added for service discovery
> specially from inside the company to direct each user to its correct
> cluster?
>
>
>
> For example, this is one of the SRV records that should be added to the
> internal DNS and answers the queries with CUCM IP address: (
> _cisco-uds._tcp.*domain*.com), so how such record will work properly to
> direct each user request to its own cluster CUCM if all 4 clusters are
> having the same DNS system and same domain ?
>
>
>
>
>
>
>
>
>
>
>
>
>
> Best Regards
>
>
>
> Ahmed Abd EL-Rahman
>
> Senior Network Engineer
>
>
>
> Hi James,
>
>
>
> Yes currently all the 4 clusters' users can talk to each others via
> inter-cluster trunks over WAN links.
>
>
>
> Kindly if you have any documents explaining such setup please share it
> with me.
>
>
>
> Appreciated.
>
>
>
>
>
>
>
>
>
> BR
>
> Ahmed Abd EL-Rahman
>
> Senior Network Engineer
>
>
>
> Sent from my iPhone
>
>
>
> On Mar 12, 2017, at 5:51 PM, James Buchanan <james.buchanan2 at gmail.com<
> mailto:james.buchanan2 at gmail.com>> wrote:
>
>
>
> Hello,
>
>
>
> It is indeed possible. You use one cluster as a sort of "hub" cluster.
> Then, just make sure the users in each cluster have the Home Cluster
> parameter checked, but make sure it is only checked in one cluster. Also,
> you have to make sure you are using ILS and have peer links in IM&P between
> all the clusters. If all the Jabber users can talk to each other today in
> all the various clusters, then you're already grand for using Expressway in
> that scenario.
>
>
>
> Thanks,
>
>
>
> James
>
>
>
> On Sun, Mar 12, 2017 at 10:30 AM, Ahmed Abd EL-Rahman <
> Ahmed.Rahman at bmbgroup.com<mailto:Ahmed.Rahman at bmbgroup.com>> wrote:
>
> Hi Gents,
>
>
>
> If we have 4 standalone clusters each of them has its own CUCM and IM&P
> servers (version 11.5), I’d like to know if it’s possible to have only 1
> Expressway C and E system to serve all the 4 cluster with MRA service ?
>
>
>
> Taking into consideration that all the 4 clusters are using the same DNS
> system and same domain name (company.com<http://company.com>).
>
>
>
>
>
>
>
>
>
>
>
>
>
> Best Regards
>
>
>
> Ahmed Abd EL-Rahman
>
> Senior Network Engineer
>
>
>
>
>
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