User's Manual

Table Of Contents
Users Manual of IGS-6325 series
76
System selects the active DNS server from configuration in turn, if the
preferred server does not respond in five attempts.
The following modes are supported:
No DNS server
No DNS server will be used.
Configured IPv4
Explicitly provide the valid IPv4 unicast address of the
DNS Server in dotted decimal notation.
Make sure the configured DNS server could be
reachable (e.g. via PING) for activating DNS service.
Configured IPv6
Explicitly provide the valid IPv6 unicast (except link
local) address of the DNS Server.
Make sure the configured DNS server could be
reachable (e.g. via PING6) for activating DNS service.
From any DHCPv4 interfaces
The first DNS server offered from a DHCPv4 lease to
a DHCPv4-enabled interface will be used.
From this DHCPv4 interface
Specify from which DHCPv4-enabled interface a
provided DNS server should be preferred.
From any DHCPv6 interfaces
The first DNS server offered from a DHCPv6 lease to a
DHCPv6-enabled interface will be used.
From this DHCPv6 interface
Specify from which DHCPv6-enabled interface a provided DNS
server should be preferred
DNS Proxy
When DNS proxy is enabled, system will relay DNS requests to the
currently configured DNS server, and reply as a DNS resolver to the
client devices on the network.
IP Interface Delete
Select this option to delete an existing IP interface.
VLAN
The VLAN associated with the IP interface. Only ports in this VLAN will
be able to access the IP interface. This field is only available for input
when creating a new interface.
DHCPv4 Enabled
Enable the DHCPv4 client by checking this box. If this option is enabled,
the system will configure the IPv4 address and mask of the interface
using the DHCPv4 protocol. The DHCPv4 client will announce the
configured System Name as hostname to provide DNS lookup.
Fallback
The number of seconds for trying to obtain a DHCP lease. After this