
Enabling DNS
To enable the Domain Name Service (DNS), add a name server to the configuration. Name servers are added to
the name-server list one at a time, with a maximum of three name servers in the list. The following table shows
you how to perform DNS tasks using the CLI and the GUI:
Task Command / Procedure
Add a DNSserver
CLI
eqcli > name-server name
GUI
Not implemented.
Remove an DNS server
CLI
eqcli > no name-server name
GUI
Not implemented.
Remove all DNS servers
CLI
eqcli > no name-server
GUI
Not implemented.
Disable DNS
CLI
eqcli > no name-server
GUI
Not implemented.
Display DNS servers
CLI
eqcli > show
GUI
Not implemented.
Note that removing all name servers from the name server list disables DNS.
Configuring NTP
Network Time Protocol, or NTP is a protocol designed to synchronize the clocks of computers over a network.
NTP on Equalizer is compatible with servers running versions 1, 2, 3, or 4 of the NTP protocol. An RFC for NTPv4
has not been written; NTPv3 is described in RFC 1305.
On Equalizer, NTP is used primarily to time various operations, to ensure accurate timestamps on log entries (with
respect to server and client log timing), and to allow for examination of the timing of log entries on two Equalizers in
a failover configuration.
NTP on Equalizer works by polling an NTP server defined through the GUI. The time between polls of the NTP
server is controlled by the minpoll and maxpoll NTP parameters, which default to 64 seconds (1 min 4 sec)
and 1024 seconds (~17 mins), respectively. The behavior of NTP is to poll with a frequency starting at minpoll
and then decrease polling frequency over time to maxpoll, as the accuracy of the local clock approaches the
accuracy of the remote server clock. The time it takes for the polling delay to increase from minpoll to maxpoll
will vary based on a number of factors, including the accuracy of the clocks on the client and server, network
latency, and other timing factors.
NTP calculates when the local and remote system clocks are sufficiently in sync to begin increasing the polling
delay towards maxpoll. When the accuracy of the two clocks is significantly different, or there is significant
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All Rights Reserved.
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Equalizer Administration Guide
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