I've not been able to find much documentation on nodeaps. When I run this command...
srvctl config nodeapps
The output shows something called a "multicast IP address". What exactly is it for? Should it be a local (non-routable) IP address on my network, or should it be a public address?
Here is the output of the command. The last line is what bothers me...
VIP exists.: /bisgora01-vip/10.128.99.52/255.255.255.128/Production
VIP exists.: /bisgora02-vip/10.128.99.59/255.255.255.128/Production
ONS daemon exists. Local port 6100, remote port 6200
eONS daemon exists. Multicast port 15429, multicast IP address 22.214.171.124, listening port 62040
first of all eONS only exists in 126.96.36.199. It is removed in 188.8.131.52. so actually nothing to worry about.
However GI itself uses multicast on the public and on the private interconnect.
On public it is used by mdsnd to share the profile.xml if you change anything in the bootstack (like network parameters or ASM_DISKSTRING).
On private it is used by mdsnd for the same (if there is a problem with multicast on the public) and in 184.108.40.206 for HAIP (redundant interconnect usage).
My question is about what appears to be a public IP address for the "multicast" address. IOW it's not on the interconnect (192.168.x.x) nor is it an address on my corporate network (10.x.x.x). I thought 220.127.116.11 was a public IP address somewhere on the internet. I just discovered however that 234.x.x.x is a unicast address and as such is probably non-routable (still trying to confirm this). It guess it's something recent. The last time I checked on non-routable addresses they were as 10/8, 172.16/16, and 192.168/16. That was years ago though.