How LAN Migration Works - Step Two: Install a LAN Connection
Figure 2. When a LAN connection is added to the site, the dial-up connection is retained as a backup data path
Later, a LAN connection is installed at the remote site. The same SNMP RTU installed in Step One can be immediately transferred to LAN transport with minimal configuration - and without disconnecting alarm inputs. (Figure 2).
A dial-up connection can be retained as a backup secondary connection in case of LAN failure.
You can also take advantage of modern wireless technologies to supply an IP connection to your site. Cellular modems and even satellite connections have dropped in price dramatically, making them a viable option where wired LAN isn't workable. Cellular has an obvious advantage whenever possible, as its hardware and bandwidth prices are much lower.
You don't have to cut over all your sites at once - you can gradually migrate different sectors of your network to LAN, as your budget and installation manpower allows.
Benefits of LAN Migration
- Spread the expense of installing LAN over several budget cycles.
Completing a major installation in one budget cycle can strain your Cap-X and staffing budgets. With controlled migration, you control the pace of migration, so it happens as quickly or as slowly as you like.
- Minimize equipment costs.
With LAN migration, you only have to buy one SNMP RTU for each of your remote sites, and it's compatible with both your old and your new transport.
- Implement SNMP monitoring now at all your remote sites
Without LAN migration, you'd need to maintain a separate legacy alarm monitoring system to monitor your non-LAN sites. Operating two unintegrated alarm systems is a bad idea - it means higher maintenance costs, higher training costs, and watching multiple screens to monitor your network.