D-Link xStack DXS-3350SR, Инструкция по установке и эксплуатации

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DXS-3350SR Gigabit Layer 3 Switch
VRRP
VRRP or Virtual Routing Redundancy Protocol 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 Global
Settings :
Figure 6- 106. VRRP Global Settings window
The following fields can be set:
Parameter Description
Global VRRP Use the pull-down menu to enable or disable VRRP globally on the Switch. The
default is
Disabled .
Non-owner response
PING 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.
Click Apply to implement changes made.
VRRP Interface Settings
The following window will allow the user to view the parameters for the VRRP function on the Switch. To view this
window, click
Configuration > Layer 3 IP Networking > VRRP > VRRP Configuration :
Figure 6- 107. VRRP Interface Table window
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