Digisol DG-GS4826S Management Manual page 510

C 19 | Configuring Router Redundancy
HAPTER
Configuring VRRP Groups
VLAN – ID of a VLAN configured with an IP interface. (Range: 1-4093;
u
Default: 1)
Adding a Virtual IP Address
VLAN ID – ID of a VLAN configured with an IP interface.
u
(Range: 1-4093)
VRID – VRRP group identifier. (Range: 1-255)
u
IP Address – Virtual IP address for this group.
u
Use the IP address of a real interface on this router to make it the
master virtual router for the group. Otherwise, use the virtual address
for an existing group to make it a backup router, or to compete as the
master based on configured priority if no other members are set as the
owner of the group address.
Configuring Detailed Settings
VLAN ID – VLAN configured with an IP interface. (Range: 1-4093)
u
VRID – VRRP group identifier. (Range: 1-255)
u
Advertisement Interval – Interval at which the master virtual router
u
sends advertisements communicating its state as the master.
(Range: 1-255 seconds; Default: 1 second)
VRRP advertisements from the current master virtual router include
information about its priority and current state as the master.
VRRP advertisements are sent to the multicast address 224.0.0.8.
Using a multicast address reduces the amount of traffic that has to be
processed by network devices that are not part of the designated VRRP
group.
If the master router stops sending advertisements, backup routers will
bid to become the master router based on priority. The dead interval
before attempting to take over as the master is three times the hello
interval plus half a second.
Priority – The priority of this router in a VRRP group. (Range: 1-254;
u
Default: 100)
The priority for the VRRP group address owner is automatically set
n
to 255.
The priority for backup routers is used to determine which router
n
will take over as the acting master router if the current master fails.
Preempt Mode – Allows a backup router to take over as the master
u
virtual router if it has a higher priority than the acting master virtual
router (i.e., a master router that is not the group's address owner, or
another backup router that has taken over from the previous master).
(Default: Enabled)
Preempt Delay Time – Time to wait before issuing a claim to become
u
the master. (Range: 0-120 seconds; 0 seconds)
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