Dell PowerConnect 3524 User Manual

Spanning-Tree Commands 389
spanning-tree guard root
Use the spanning-tree guard root interface configuration command to enable root guard on all the
Spanning Tree instances on that interface. Root guard restricts the interface to be the root port for the
switch. Use the no form of this command to disable root guard on the interface.
Syntax
• spanning-tree guard root
• no spanning-tree guard root
Default Configuration
Root guard is disabled.
Command Mode
Interface configuration (Ethernet, port-channel).
Spanning tree enabled mode MSTP
Default port cost method: long
###### MST 0 Vlans Mapped: 1-9, 21-4094
CST Root ID Priority 32768
Address 00:01:42:97:e0:00
This switch is root for CST and IST master.
Root Port 1 (1/e1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Max hops 20
book.book Page 389 Thursday, December 18, 2008 7:40 PM

Dell PowerConnect 3524 Specifications

General

Throughput	9.5 Mpps
Number of queues	4
MAC address table	8000 entries
Maximum data transfer rate	0.1 Gbit/s
Supported data transfer rates	10/100 Mbps
10G support	No
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
Input frequency	50/60 Hz
Weight (imperial)	11 lbs
Dimensions (WxDxH)	440 x 257 x 43.2 mm
Networking features	Gigabit Ethernet, Fast Ethernet
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Dimensions (W x D x H) (imperial)	17.3 x 10.12 x 1.7 \
Switch type	Managed
Switch layer	L2
Data link protocols	Ethernet
Supported network protocols	HTTP, HTTPS/SSL, SSH
Power connector	DC-in jack
Gigabit Ethernet (copper) ports quantity	2
Basic switching RJ-45 Ethernet ports quantity	24
Product color	Black
Power source	AC
Input voltage	100 - 240 V
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	5000 g