Digi TransPort WR31 User Manual page 431

Configure Virtual Private Networking (VPN)
Learning mode: saving entries
When using learning mode, the dynamic backup database is stored in RAM. This database is lost if
the router is power-cycled. You can save the database in RAM to flash to over-write the dbfile with
the one in RAM that includes the learned entries or it can be saved to a new file.
To save the dbfile to flash from RAM, use the following command:
sqlsave 0 <filename>
Where <filename> is the name of the destination file.
For example, to save the learned database entries to a file called backup.csv:
sqlsave 0 backup.csv
If there are no learned entries, this command will not create a file. To view the number to learned
entries, use the command sql 0 ?, and in the output, see the section headed Learning info:
Learning info.
items learned:0
matched retrievals:0
OK
Configure a TransPort to use a backup database
Once the router has been configured to run a SQL csv database locally, you can use this backup csv
database if the main SQL database goes offline. Required configuration parameters are:
1 Configure the IP address of the SQL server to use.
egroup 0 dbhost "192.168.0.50"
2 Configure the IP address of the SQL server that will have a backup database. If a socket
connection fails to this IP address, the router will use the backup IP address.
ipbu 0 IPaddr "192.168.0.50"
3 Configure the backup database IP address; that is, the loopback address of the router or an
alternative SQL server, this example shows the loopback IP address of the router.
ipbu 0 BUIPaddr "127.0.0.1"
4 Set the amount of time in seconds that the connection to the main SQL server will be retried.
ipbu 0 retrysec 30
5 Set the router to use the backup IP address if the main database is unavailable.
ipbu 0 donext ON
For example, to configure and use a local backup database when the main SQL database at
192.168.0.50 is offline, the configuration may look similar to this:
egroup 0 dbhost "192.168.0.50"
sql 0 dbsrvmem 200
sql 0 dbfile "sardb.csv"
sql 0 dbname "sarvpns"
sql 0 learn ON
sqlsave 0 backup.csv
ipbu 0 IPaddr "192.168.0.50"
ipbu 0 BUIPaddr "127.0.0.1"
ipbu 0 retrysec 30
ipbu 0 donext ON
Digi TransPort WR Routers User Guide
IPsec parameters
431