Dell PowerConnect 5324 User Manual

Configuring System Information 91
Information received from SNTP servers is evaluated based on the Time level and server type.
SNTP time definitions are assessed and determined by the following time levels:
•
T1 — The time at which the original request was sent by the client.
•
T2 — The time at which the original request was received by the server.
•
T3 — The time at which the server sent the client a reply.
•
T4 — The time at which the client received the server's reply.
Polling for Unicast Time Information
Polling for Unicast information is used for polling a server for which the IP address is known. T1 -
T4 are used to determine the server time. This is the preferred method for synchronizing switch
time.
Polling for Anycast Time Information
Polling for Anycast information is used when the server IP address is unknown. The first anycast
server to return a response is used to set the time value. Time levels T3 and T4 are used to
determine the server time. Using Anycast time information for synchronizing switch time is
preferred to using Broadcast time information.
Broadcast Time Information
Broadcast information is used when the server IP address is unknown. When a broadcast message is
sent from an SNTP server, the SNTP client listens for the response. The SNTP client neither sends
time information requests nor receives responses from the Broadcast server.
MD5 (Message Digest 5) Authentication safeguards switch 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.
Click
System → SNTP in the tree view to open the SNTP page.

Dell PowerConnect 5324 Specifications

General

Switching Capacity	48 Gbps
VLAN Support	Yes
Rack Mountable	Yes
Device Type	Switch
MAC Address Table Size	8K entries
RAM	64 MB
Flash Memory	8 MB
Power Device	Internal power supply
Voltage Required	AC 120/230 V (50/60 Hz)
Jumbo Frame Support	Yes
Ports	24 x 10/100/1000 + 2 x SFP
Management	Web-based, SNMP, CLI
Enclosure Type	Rack-mountable
Routing Protocol	Static IP routing
Remote Management Protocol	SNMP 1, 2, 3
Features	Flow control, auto-negotiation, port mirroring, Quality of Service (QoS)
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x
Operating Temperature	0 °C to 45 °C
Storage Temperature	-20 °C to 70 °C
Humidity	5% to 95% (non-condensing)
Layer	Layer 2