[HECnet] VMS Cluster Group Number Coordination

[Paul Koning]

> On Nov 30, 2020, at 7:56 PM, Mark J. Blair <nf6x at nf6x.net> wrote:
> 
> 
> 
>> On Nov 30, 2020, at 4:40 PM, Paul Koning <paulkoning at comcast.net> wrote:
>> 
>> That's the 16 bit number used in the Local Area VAXcluster protocols, right?  If so, since it's a LAN-local protocol, it needs to be coordinated on a (bridged) LAN but not across routers.
> 
> I'm not sure how it's used. The manual says it's a number from 1 to 4095 or 61440 to 65535 to uniquely identify each cluster system on a LAN, but it didn't specifically state whether it's something that might pass through a DECnet router. I'll arbitrarily pick 2622 (since the cluster alias node ID is going to be 2.622), and hope for a low probability of conflict?

That's just slightly muddled, but it basically confirms what I thought.  That's the LAVC protocol, which is the Ethernet version of the original CI-based cluster protocols.  It's a non-routable protocol, entirely unrelated to DECnet and invisible to routers.

	paul