Amer Networks E5Web GUI - Manual (Page 246)

configured during initial connection to the ISP.
When DHCP configures the DHCP servers in cOS Core, names are automatically assigned to these
servers so they can be referenced later in user interfaces. The names used are of the form
_dns1, _dns2 and so on, where is the interface name on which
the DHCP addresses are received.
When cOS Core itself acts as a DHCP server, the DNS addresses it hands out are, by default, the
same as those received through DHCP unless different DNS servers are explicitly specified.
Default DNS Server Address Names with DHCP
When cOS Core receives DNS servers through DHCP, these are automatically added to the
address book with a default name that follows the pattern _DNS. For
example, the second DNS server address allocated through the wan interface would appear in
the address book as wan_DNS2.
When viewed in the Web Interface or InControl these DNS addresses always have the value
0.0.0.0. To see the actual value after it has been assigned with DHCP, use the CLI command dhcp
-show. For example, to see the status of the DNS servers on the wan interface, use the command:
Device:/> dhcp -show wan
See Section 3.10, “DNS” for more information about this topic.
Chapter 3: Fundamentals
246