[HECnet] Re: A milestone

The polling interval is 24 hours, but that doesn't tell the whole story. A number of routers are configured to send topology change events to the mapper, and it reacts to those by doing an incremental scan (with a 15 second holdoff). So in general, whenever you turn a node or circuit on or off, the map should react right away. You can confirm this, probably most easily by looking at the "map data" table (a link off the map display). If incremental update isn't working for your nodes, a possible reason would be that there isn't an event source in the area. Since the topology changes that the mapper reacts to are all level 1 events, they depend on a router in that same area to let me know. So for changes in an area not covered by an event sender, the 24 hour poll cycle applies. At the top of the map display this is shown: "Network data last updated" is the full scan, and "Last incremental change" is the most recent event driven scan of just the reported spot. I have 11 event senders right now, in a couple of cases several per area (good for redundancy) but clearly not all areas are covered. Those with routers that can send DECnet events to a "monitor sink" interested to volunteer should drop me a note, I can supply the desired setup. You can see the currently connected senders at the bottom of akdesign.dyndns.org:8080/nsp/status paul