KTI KGS-3120, Руководство по эксплуатации

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To configure permanent entries for the DNS Relay Static Table, use the following window.
DNS Relay Static Settings
DNS Relay Static Settings window
To create a new DNS Relay Static entry, enter the Domain Name and the associated IP address. Click
on the [Add] button to enter the settings into the static table.
Domain Name The domain name used for the static entry.
IP Address The IP address associated with the domain name.
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 configu-
ration settings for this protocol to function optimally.