Dell PowerConnect 3548 User Manual

154 Configuring System Information
Configuring Domain Name Systems
Domain Name System (DNS) converts user-defined domain names into IP addresses. Each time a
domain name is assigned the DNS service translates the name into a numeric IP address. For example,
www.ipexample.com is translated into 192.87.56.2. DNS servers maintain domain name databases and
their corresponding IP addresses.
The Domain Naming System (DNS) page contains fields for enabling and activating specific
DNS servers.
To open the Domain Naming System (DNS) page, click System → IP Addressing → Domain Naming
System (DNS) in the tree view.
Figure 6-43. Domain Naming System (DNS)
The Domain Naming System (DNS) page contains the following fields:
• DNS Status — Enables or disables translating DNS names into IP addresses.
•
DNS Server — Contains a list of DNS servers. DNS servers are added from the Add DNS Server page.
•
DNS Server Currently Active — The DNS server that is currently active.
•
Set DNS Server Active — Activates the selected DNS server.
•
Remove DNS Server — Removes the selected DNS server.
–
Checked — Removes the selected DNS server.
–
Unchecked — Maintains the selected DNS server.

Dell PowerConnect 3548 Specifications

General

MAC address table	8000 entries
Maximum data transfer rate	0.1 Gbit/s
Supported data transfer rates	10/100 Mbps
10G support	-
Number of VLANs	256
Flow control support	Yes
Networking standards	IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.3ad
Dimensions (WxDxH)	440 x 257 x 43.2 mm
Networking features	Gigabit Ethernet, Fast Ethernet
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Switch type	Managed
Switch layer	L2
Data link protocols	Ethernet
Supported network protocols	HTTP, HTTPS/SSL, SSH
Power connector	DC-in jack
SFP/SFP+ slots quantity	2
Basic switching RJ-45 Ethernet ports quantity	48
Product color	Black
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	10 - 95 %
Operating relative humidity (H-H)	10 - 90 %

Weight and Dimensions

Weight	8000 g