More than one collector

One collector is enough for most networks: it handles a thousand devices or more. Add another when:

• part of your network can't be reached from where the first collector runs (a second POP with its own management network, or a separate customer network);
• you want monitoring to carry on from a second place when the first one's site is down.

Add a collector

Add each one in Admin → Collectors with its own name and token, and install it on a machine in that part of the network (how).

Which collector monitors which device

Every device has a Collector setting. A device is monitored by exactly one collector, the one you choose. With a single collector, new devices get it automatically. A device with no collector isn't monitored: the Devices page shows it as not monitored.

When you import devices from a spreadsheet, the collector column takes a collector's name (import).

The collector's site

Give each collector the site where it runs. WISPMap measures reachability from there: when a link fails, the sites on the far side, as seen from the collector, are the ones cut off. A wrong site means wrong root causes.

Its own intervals

Each collector has its own ping, poll and send intervals on its page (settings).

When a collector goes offline

Its devices show as unknown, not down, and you get one Collector offline alert instead of an outage for everything it monitors.