Advanced Routing Overview
Configure advanced routing to determine how the system establishes the following types of connections:
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Intracluster connections between IM and Presence Service nodes within a cluster.
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Intercluster connections between IM and Presence Service clusters that share the same presence domain.
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SIP static routes for federation connections between different presence domains. Static routes are a fixed path and take precedence over dynamic routes.
Intracluster and Intercluster Connections
There are two modes to establish intercluster and intracluster connections:
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Multicast DNS (MDNS)—MDNS routing uses DNS records to set up the connections between the nodes. You can use MDNS routing when all nodes in the cluster are in the same multicast domain.
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Router-to-router (the default option)—Router-to-router uses IP address and user information to dynamically configure connections between the nodes. Use router-to-router connections when the nodes in the cluster are not in the same multicast domain, or when they are in different subnets.
Note |
Cisco recommends MDNS routing because it can seamlessly support new XCP routers joining the XCP route fabric. |