Wireless

Simple IOS-XE mDNS configuration for AppleTV

This post is a small “tech note” about how to configure mDNS in IOS-XE to support AppleTV. In this example the AppleTV is located in VLAN 101 and the client in VLAN 107.

First enable mDNS and configure the switch to query for AirPlay and AirTunes services (AirTunes is necessary for AppleTV to work as well).
service-list mdns-sd MDNS-QUERY query
service-type _airplay._tcp.local
service-type _raop._tcp.local
service-routing mdns-sd
service-policy-query MDNS-QUERY 60

Configure service lists so that only AirPlay and AirTunes announcements will be accepted on the VLAN101 interfaces.
service-list mdns-sd MDNS-VLAN101-IN permit 10
match message-type announcement
match service-type _airplay._tcp.local
service-list mdns-sd MDNS-VLAN101-IN permit 20
match message-type announcement
match service-type _raop._tcp.local
service-list mdns-sd MDNS-VLAN101-IN deny 30

From the client side we only process AirPlay and AirTunes queries.
service-list mdns-sd MDNS-VLAN107-IN permit 10
match message-type query
match service-type _airplay._tcp.local
service-list mdns-sd MDNS-VLAN107-IN permit 20
match message-type query
match service-type _raop._tcp.local
service-list mdns-sd MDNS-VLAN107-IN deny 30

Because we apply the filtering on the inbound side, outbound filtering is not required.
service-list mdns-sd MDNS-VLAN101-OUT permit 10
service-list mdns-sd MDNS-VLAN107-OUT permit 10

Apply the service lists on the interfaces.
interface Vlan101
service-routing mdns-sd
service-policy MDNS-VLAN101-IN IN
service-policy MDNS-VLAN101-OUT OUT
interface Vlan107
service-routing mdns-sd
service-policy MDNS-VLAN107-IN IN
service-policy MDNS-VLAN107-OUT OUT

Validate that records are visible.
CAT3650# show mdns cache
_airplay._tcp.local PTR IN 4500/4496 0 Vl101 a431.3514.b907
_raop._tcp.local PTR IN 4500/4496 1 Vl101 a431.3514.b907
AppleTV._airplay._tcp.local SRV IN 4500/4496 1 Vl101 a431.3514.b907