Vrrp; Vrrp Configuration - D-Link DGS-3312SR Release 3.5 Manual

VRRP

Virtual Routing Redundancy Protocol (VRRP) is a function on the Switch that dynamically assigns responsibility for a
virtual router to one of the VRRP routers on a LAN. The VRRP router that controls the IP address associated with a virtual
router is called the Master, and will forward packets sent to this IP address. This will allow any Virtual Router IP address
on the LAN to be used as the default first hop router by end hosts. Utilizing VRRP, the administrator can achieve a higher
available default path cost without needing to configure every end host for dynamic routing or routing discovery protocols.
Statically configured default routes on the LAN are prone to a single point of failure. VRRP is designed to eliminate these
failures by setting an election protocol that will assign a responsibility for a virtual router to one of the VRRP routers on
the LAN. When a virtual router fails, the election protocol will select a virtual router with the highest priority to be the
Master router on the LAN. This retains the link and the connection is kept alive, regardless of the point of failure.
To configure VRRP for virtual routers on the Switch, an IP interface must be present on the system and it must be a part of
a VLAN. VRRP IP interfaces may be assigned to every VLAN, and therefore IP interface, on the Switch. VRRP routers
within the same VRRP group must be consistent in configuration settings for this protocol to function optimally.

VRRP Configuration

To enable VRRP globally on the Switch, click Configuration > Layer 3 IP Networking > VRRP > VRRP
Configuration:
The following fields can be set:
Parameter
Global VRRP
Non-owner response
PING
Click Apply to implement changes made.
DGS-3312SR Stackable Gigabit Layer 3 Switch
Figure 5- 45. VRRP Configuration window
Description
Use the pull-down menu to enable or disable VRRP globally on the Switch. The
default is Disabled.
Enabling this parameter will allow the virtual IP address to be PINGed from other host
end nodes to verify connectivity. This will only enable the PING connectivity check
function. This command is Disabled by default.
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