Digi TransPort WR31 User Manual page 536

Configure legacy protocols
Forcing SNAIP to use a specific instance
If several SNAIP instances share an ASY port, a switchover to a specific instance can be initiated by
issuing snasw x, where x is the SNAIP instance number. This instance must be available to go
online, or this command will fail.
To revert back and use the default instance, issue the snadis x command. The router uses normal
priorities to determine which SNAIP instance gets to use the SYNC port.
Digi TransPort WR Routers User Guide
Configure Systems Network Architecture over IP (SNAIP)
536