Figure 2: Unicast Mode Layer 2 Network Default mDNS Service Configurations Starting with Cisco IOS XE Bengaluru 17.6.1, an intuitive approach to configuring mDNS services, known as the default mDNS service configuration, is introduced. The default service configuration contains a default service policy that creates a service list with default service-types that is automatically enforced in the ingress or egress direction. The following figure illustrates the default mDNS service configurations: Figure 3: Default mDNS Service Configuration The default mDNS service configurations accelerates solution adoption, increases user productivity, and reduces operation overhead.
Additionally you can define a custom policy and define a service list with custom-defined service types and enforce it in the ingress or egress direction. HSRP-Aware mDNS Service-Routing Starting from Cisco IOS XE Bengaluru 17.6.1, Hot Standby Router Protocol-aware (HSRP-aware) mDNS Service-Routing is supported between Service Peers and SDG agents in a multilayer network. During a changeover, that is when the primary SDG agent fails and the secondary SDG agent becomes the new primary, the service-routing session between the Service Peer and the SDG agent remains uninterrupted. The new primary SDG agent establishes a session with the Service Peer and cache information is resynced.
Configuring Local Area Bonjour in Unicast Mode for LAN Networks Default mDNS Service Configurations Configuring Local Area Bonjour in Unicast Mode for LAN Networks 4