Dell PowerConnect 3548 User Manual

348 Configuring Switch Information
• Role — Indicates the port role assigned by the STP algorithm in order to provide to STP paths.
The possible field values are:
–
Root — Provides the lowest cost path to forward packets to root device.
–
Designated — Indicates the port or LAG via which the designated device is attached to the LAN.
–
Alternate — Provides an alternate path to the root device from the root interface.
–
Backup — Provides a backup path to the designated port path toward the Spanning Tree leaves.
Backup ports occur only when two ports are connected in a loop by a point-to-point link. Backup
ports also occur when a LAN has two or more connections connected to a shared segment.
–
Disabled — Indicates the port is not participating in the Spanning Tree.
•
Interface Priority — Defines the interface priority for specified instance. The default value is 128.
•
Path Cost — Indicates the port contribution to the Spanning Tree instance. The possible range
is 1-200,000,000.
•
Default Path Cost — Indicates if the default path cost is used. The possible values are:
–
Checked — Default path cost is used.
–
Unchecked — Path cost is user-defined.
•
Designated Bridge ID — The bridge ID number that connects the link or shared LAN to the root.
•
Designated Port ID — The Port ID number on the designated bridge that connects the link or the
shared LAN to the root.
•
Designated Cost — Cost of the path from the link or the shared LAN to the root.
•
Forward Transitions — Number of times the port changed to the forwarding state.
•
Remain Hops — Indicates the number of hops remaining to the next destination.
Defining MSTP Interface Settings
1 Open the MSTP Interface Settings page.
2 Select an interface.
3 Define the fields.
4 Click Apply Changes .
MSTP parameters are defined, and the device is updated.

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