Advanced Network Settings descriptions
Digi TransPort User Guide
498
Chaining backup IP addresses
It is possible to chain backup IP addresses by making multiple entries in the table.
For example, if the backup IP address for the original IP address appears as the IP address in the
next row, along with a new backup IP address for that IP address. When the original IP address
becomes unavailable, the router tries the backup IP address. If that IP address is unavailable, the
router tries its backup IP address, and so on.
For example, if the original IP address is
192.168.0.1
with a backup IP address of
192.168.0.2
,
setting the IP address in the next row to
192.168.0.2
with a backup IP address of
192.168.0.3
causes the router to try all these IP addresses in succession.
Note
The time that it takes for a connection to an IP address to fail is determined by the
Connect timeout
parameter on the
Configuration > Network > Advanced Network
Settings > Socket Settings
web page.
Related CLI commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
ipbu
n
IPaddr
Valid IP address
a.b.c.d
IP Address a.b.c.d
ipbu
n
BUIPaddr
Valid IP address
a.b.c.d
Backup IP Address a.b.c.d
ipbu
n
retrysec
0-2147483648
Retry Time
s
(seconds)
ipbu
n
donext
OFF,ON
Try Next
sarsys
0
dest
Valid IP address
a.b.c.d
Send
Backup IP
system messages
to IP address a.b.c.d