[plug] OT: Pool of IPs for testing load-balanced connections

Adrian Woodley Adrian at Diskworld.com.au
Thu Sep 3 11:01:51 WST 2009

G'day PLUGers,

I've just about finished the new design for the networking of the 
various mobile comms facilities at work. Each comms unit should have an 
Internet connection, either via NextG or a satellite uplink.

The new network design will allow any combination of comms facilities 
and up-links to join the Local Inter-Network Connection (LINC) and share 
their routing information.

Once the facilities are networked, the device with the highest priority 
will be elected the default gateway for all other devices. Additionally, 
each facility, with its own Internet connection, will load-balance 
between its connection and the elected gateway.

The (minor) issue I'm facing is that for the load balancing to work, the 
router (embedded system running pfSense) needs to be able to ping a 
(unique) target out on the Internet. What I need is a pool of very 
stable IPs to test against, say around two dozen.

The targets must be IPs, rather than host-names, as until a ping is 
successful there is no Internet connection and therefore no DNS.

Any suggestions?


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