Cisco Cisco Expressway Maintenance Manual
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Configuring Expressway for external XMPP federation
This section takes you through the steps required to configure your Expressway for external XMPP
federation.
federation.
Prerequisites
Ensure that you are running the following software versions:
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Expressway X8.2 or later
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Unified CM IM & Presence 9.1.1 or later
Note that XMPP federation can only be supported on a single Expressway cluster.
Before configuring your Expressway system for external XMPP federation:
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Ensure that Interdomain XMPP Federation has been disabled on Unified CM IM and Presence:
Go to
Go to
Cisco Unified CM IM and Presence Administration > Presence > Inter Domain Federation >
XMPP Federation > Settings
and ensure that XMPP Federation Node Status is set to Off.
You must disable Interdomain Federation on Unified CM IM&P before enabling XMPP federation on
Expressway.
Expressway.
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An Expressway-C (cluster) and Expressway-E (cluster) have been configured for Mobile and Remote
Access to Unified Communications services, as described in Mobile and Remote Access via Cisco
Expressway Deployment Guide. If only XMPP federation is required (video calls and remote registration to
Unified CM are not required), the following items do not have to be configured:
Access to Unified Communications services, as described in Mobile and Remote Access via Cisco
Expressway Deployment Guide. If only XMPP federation is required (video calls and remote registration to
Unified CM are not required), the following items do not have to be configured:
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domains that support SIP registrations and provisioning on Unified CM or that support IM and Presence
services on Unified CM
services on Unified CM
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Unified CM servers (you must still configure the IM&P servers)
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HTTP server allow list
Note that federated communications are available to both on-premises clients (connected directly to
Unified CM IM&P) and off-premises clients (connected to Unified CM IM&P via mobile and remote
access).
Unified CM IM&P) and off-premises clients (connected to Unified CM IM&P via mobile and remote
access).
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If you intend to use both TLS and group chat, the Expressway-C and Expressway-E server certificates
must include in their list of subject alternate names (using either XMPPAddress or DNS formats) the Chat
Node Aliases that are configured on the IM&P servers. Note that the Expressway-C automatically
includes the chat node aliases in its certificate signing requests (CSRs), providing it has discovered a set
of IM&P servers. When generating CSRs for the Expressway-E we recommend that you copy-paste the
chat node aliases from the equivalent
must include in their list of subject alternate names (using either XMPPAddress or DNS formats) the Chat
Node Aliases that are configured on the IM&P servers. Note that the Expressway-C automatically
includes the chat node aliases in its certificate signing requests (CSRs), providing it has discovered a set
of IM&P servers. When generating CSRs for the Expressway-E we recommend that you copy-paste the
chat node aliases from the equivalent
Generate CSR
page on the Expressway-C.
for more information.
Configuring local domains for XMPP federation on Expressway-C
You must configure your local domain names for which you want to provide XMPP federated services.
Cisco Expressway Administrator Guide (X8.5)
Page 81 of 394
Unified Communications
External XMPP federation