User`s guide

41
The routing code is used to determine which interface should be used. This allows the unit
to test other interfaces and adjust the VRRP priority according to the status of that
interface. For example, the user may wish to configure probing in such a way that the Digi
router WAN interface is tested, and adjust the VRRP priority down if the WAN is not
operational. Another example would be to probe the WAN interface of another VRRP router,
and adjust the local VRRP priority up if that WAN interface isn’t operational. When
configured to probe in this manner, it is necessary to configure a second Ethernet interface
to be on the same subnet as the VRRP interface. This is because the VRRP interface cannot
be used when it is in backup mode. The probes should be sent on this second interface. The
second interface will have the other VRRP router as its gateway. The routing table should be
configured to direct packets for the probe address to the desired interface.
every n seconds when in Backup state
The interval between successive probe attempts when the interface is in Backup state.
every n seconds when in Master state
The interval between successive probe attempts when the interface is in Master state.
Adjust priority n dir after x probe failures
These parameter control by how much and in which direction the VRRP priority is adjusted
when the specified number of probes have failed.
Reset probe failure count after n probe successes
The number of consecutive successful probes that are required before the current failure
count is reset to 0.
Use interface x,y over which to send probe
These parameters can be used to override the routing code and force the probe packets to
be sent out of a specific interface.
Get the source IP address from interface x,y
These parameters can be used to the probe packets have the source IP address from a
specific interface rather than the interface over which it is being transmitted.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
eth n vrrpid 0 – 255 VRRP Group ID
eth n vrrpprio 0 - 255 VRRP Priority
eth n vboostprio 0 - 255
Boost the priority by n for s
seconds after switching to the
MASTER state
eth n vboostsecs Integer
Boost the priority by n for s
seconds after switching to the
MASTER state
eth n vprobemode off, TCP, ICMP
Send p probe to IP address
a.b.c.d TCP port n
eth n vprobeip IP Address
Send p probe to IP address
a.b.c.d TCP port n
eth n vprobeport 0 – 65535
Send p probe to IP address
a.b.c.d TCP port n