Stopping Services for Changing IM & Presence Service Default Domain Setting

ADE.

Change the Domain Value - Follow this procedure if you want to change the domain value (from one valid domain value to another valid IP proxy domain value)

This procedure is applicable if you have a DNS or non-DNS deployment.

Procedure - Step 1 - Stop the Cisco SIP Proxy, Presence Engine and XCP Router services on IM and Presence on all nodes in your cluster.

Step 2 - On the publisher node, perform the following steps to configure the new domain value: a.

Select IM and Presence Administration > System > Cluster Topology.

b.

In the right pane, select Settings.

c.

Configure the Domain Name value with the new domain.

a.

Configure the Federation Routing IM and Presence FQDN with the new domain.

c.

You will be prompted to confirm these configuration changes.

Select OK for both prompts, and then select Save.

Step 3 - On all nodes in the cluster, use this CLI command to set the new domain: set network domain <new_domain> This CLI command invokes a reboot of the servers.

Step 4 - On all nodes in the cluster, manually start the Cisco Presence Engine and Cisco XCP Router services after the reboot is complete (if required)

Step 5 - Manually regenerate all certificates on each node in the cluster.

Reference:http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/im_presence/ip_address_h ostname/9_0_1/IM_P_IPChange/sip_domain.html.

To change the default domain setting of IM & Presence service, we need to stop the following services:

A. Cisco XCP Router B. Cisco Intercluster Sync Agent C. Cisco XCP Authentication Service

Let's discuss each of these services in detail:

A. Cisco XCP Router: The Cisco XCP Router service is responsible for routing XMPP messages between IM and Presence servers in a cluster. When this service is stopped, XMPP messages are not routed between the servers, and the cluster becomes partitioned. Therefore, stopping this service is necessary to change the default domain setting of IM & Presence service.

B. Cisco Intercluster Sync Agent: The Cisco Intercluster Sync Agent service is responsible for synchronizing data between the IM & Presence cluster and other clusters. When this service is stopped, the synchronization stops, and data is no longer updated or exchanged. Therefore, it is necessary to stop this service to change the default domain setting of IM & Presence service.

C. Cisco XCP Authentication Service: The Cisco XCP Authentication Service is responsible for authenticating users and services in the IM & Presence cluster. When this service is stopped, user authentication and service authentication fail. Therefore, it is necessary to stop this service to change the default domain setting of IM & Presence service.

On the other hand, the following services need not be stopped to change the default domain setting of IM & Presence service:

D. Cisco SIP Proxy: The Cisco SIP Proxy service is responsible for SIP proxy functionality in the IM & Presence cluster. This service does not affect the default domain setting of IM & Presence service.

E. Cisco Presence Engine: The Cisco Presence Engine service is responsible for maintaining the presence status of users in the IM & Presence cluster. This service does not affect the default domain setting of IM & Presence service.

F. Cisco AXL Web service: The Cisco AXL Web service is responsible for the Cisco Unified Communications Manager Application Programming Interface (API). This service does not affect the default domain setting of IM & Presence service.

In conclusion, to change the default domain setting of IM & Presence service, we need to stop the Cisco XCP Router, Cisco Intercluster Sync Agent, and Cisco XCP Authentication Service.