I got this idea reading over the disucssion on Backup Hub Addresses (see the attachment to http://www.adcportal.com/forums/viewtop ... f=55&t=683). Thor used the term secondary addresses, and I realised that secondary to me did not mean the same thing as the backup solution I desired, but rather meant an alternative way to connect to the same hub.
The failover address is intended to migrate the entire populace of the hub to a different address, which is most likely on a different physical machine. The alternative address is intended to provide another away to connect to a hub on a single physical machine i.e. it lists all the addresses on which the hub is listening for connections.
On my own hub, I listen on a LAN (10.x.x.x) address, and also a Hamachi (5.x.x.x) address. The Hamachi address allows me to login to the hub remotely despite the fact my network does not expose local addresses. If exposed by a client, this could be a useful way of notifying users of alternative connection options.
As with backup addresses, this would be a parameter in the hub's INF message. I suggest the name SA (secondary address), both because Thor used it, and because AA looks more like a typo - but I don't care that much. Also like backup addresses, the value of the parameter would be a comma-seperated list of well-formed ADC/ADCS addresses.
Clients SHOULD NOT use the list of alternate addresses for failover purposes, but an address MAY appear in both lists and thus be used for both purposes.
Alternate Hub Addresses
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If you have an account on the wiki, remember to update the ADC Proposals page for new ideas.
http://dcbase.org/wiki/ADC_Proposals_list
If you have an account on the wiki, remember to update the ADC Proposals page for new ideas.
http://dcbase.org/wiki/ADC_Proposals_list