TP-Link TL-SG2452 User Manual

User Guide 296
Configuring Spanning Tree Spanning Tree
1
Spanning Tree
1.1 Overview
STP
STP (Spanning Tree Protocol) is a layer 2 Protocol that prevents loops in the network. As is
shown in Figure 1-1, STP helps to:
■ Block specific ports of the switches to build a loop-free topology.
■ Detect topology changes and automatically generate a new loop-free topology.
Figure 1-1 STP Function
STP
RSTP
RSTP (Rapid Spanning Tree Protocol) provides the same features as STP. Besides, RSTP
can provide much faster spanning tree convergence.
MSTP
MSTP (Multiple Spanning Tree Protocol) also provides the fast spanning tree convergence
as RSTP. In addition, MSTP enables VLANs to be mapped to different spanning trees ( MST
instances), and traffic in different VLANs will be transmitted along their respective paths,
implementing load balancing.
1.2 Basic Concepts
1.2.1 STP/RSTP Concepts
Based on the networking topology below, this section will introduce some basic concepts
in STP/RSTP.

TP-Link TL-SG2452 Specifications

General

Switching Capacity	104 Gbps
Forwarding Rate	77.38 Mpps
MAC Address Table	16 K
Weight	3.5 kg
Fan Quantity	2
Mounting	Rack mountable
Jumbo Frame	9 KB
Operating Temperature	0°C to 40°C
Storage Temperature	-40°C to 70°C
Operating Humidity	10% to 90% non-condensing
Storage Humidity	5% to 90% non-condensing
Ports	48 x 10/100/1000Mbps RJ45 ports, 4 x 1G SFP slots
Dimensions (W x D x H)	440 x 220 x 44 mm
Power Supply	100-240V AC, 50/60Hz
Standards and Protocols	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3z, IEEE 802.3x, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
L2 Features	VLAN, Port Mirroring, Link Aggregation
VLAN	802.1Q VLAN
Security	DHCP Snooping
Management	SNMP v1/v2c/v3
Quality of Service	802.1p QoS