Software User Manual
D-Link Unified Access System
12/10/09
Document
34CSFP6XXUWS-SWUM100-D7
Configuring SNTP Settings
Page 167
MD5 (Message Digest 5) Authentication safeguards device synchronization paths to SNTP servers. MD5 is an algorithm that
produces a 128-bit hash. MD5 is a variation of MD4, and increases MD4 security. MD5 verifies the integrity of the
communication, authenticates the origin of the communication.
The SNTP folder contains links to view or configure the following features:
•
•
•
•
“Configuring and Viewing ISDP Information”
SNTP G
LOBAL
C
ONFIGURATION
Use the SNTP Global Configuration page
to view and adjust SNTP parameters.
To display the SNTP Global Configuration page, click
LAN > Administration > SNTP
>
SNTP Settings
in the navigation
menu.
Figure 95: SNTP Global Configuration
Table 80: SNTP Global Configuration Fields
Field
Description
Client Mode
Use drop-down list specify the SNTP client mode, which is one of the following modes:
• Disable
: SNTP is not operational. No SNTP requests are sent from the client nor are
any received SNTP messages processed.
• Unicast
: SNTP operates in a point to point fashion. A unicast client sends a request
to a designated server at its unicast address and expects a reply from which it can
determine the time and, optionally the round-trip delay and local clock offset relative
to the server.
• Broadcast
: SNTP operates in the same manner as multicast mode but uses a local
broadcast address instead of a multicast address. The broadcast address has a
single subnet scope while a multicast address has Internet wide scope.
Port
Specifies the local UDP port to listen for responses/broadcasts. Allowed range is (1 to
65535). Default value is 123.
Unicast Poll Interval
Specifies the number of seconds between unicast poll requests expressed as a power
of two when configured in unicast mode. Allowed range is (6 to 10). Default value is 6.
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