Overriding The Default Multicast Group Address And Port For Multicast Announcements - Sennheiser MobileConnect User Documentation

Overriding the default multicast group address and port for multicast an-
nouncements
You can override the default multicast group address and port for announ-
cements by adding a _cnct._udp SRV entry into your DNS. ConnectStations
will then use the specified address/port for cluster discovery via multicast
announcement (as well as for Client's Discovery). As with explicit server
selection, the entries need to correspond to the DNS search domain set by
your DHCP server.
Example:
1. Assume you want to override the default multicast group address and
port to be 224.1.2.3:1234.
2. Your DHCP sets the domain field (DHCP Option 15) to an arbitrary do-
main name, let's assume it is "your-domain.com".
3. Create a single SRV entry as follows. The priority and weight fields are
currently irrelevant. Set the TTL to a sane value according to your net-
work requirements.
►
Service name
_cnct._udp.your-domain.com
4. When reconnected to your network, or restarted, all announcement
and discovery between ConnectStations will now work on the group
address and port specified.
TTL Class Type Priority Weight Port
3600 IN SRV 0
Network integration
Target
0 1234 224.1.2.3
25