User's Manual

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Users Manual of CS-6306R
The bridge with highest priority (the identifier value is the smallest) is selected as the root. Ports of each
bridge have the attribute Root Path Cost, that is, the minimum of path cost summation of all ports from the
root to the bridge. The designated port of each network segment refers to the port connecting to the network
segment and having the minimum path cost.
When two ports on a switch are part of a loop, the spanning-tree port priority and path cost settings control
which port is put in the forwarding state and which is put in the blocking state. The spanning-tree port priority
value represents the location of a port in the network topology and how well it is located to pass traffic. The
path cost value represents the media speed.
Our switch standard supports two modes of spanning tree protocol 802.1D STP and 802.1w RSTP. Some
models of the switch support distributing STP mode according to VLAN and MSTP spanning tree protocol. For
more details, please refer to ‘STP Mode and Model Table’ in chapter 2.
This chapter describes how to configure the standard spanning tree protocol that switch supports.
802.1D STP and 802.1w RSTP are abbreviated to SSTP and RSTP in this article.
SSTP means Single Spanning-tree.
19.1.2 SSTP Configuratiom Task List
 Selecting STP Mode
 Disabling/Enabling STP
 Configuring the Switch Priority
 Configuring the Hello Time
 Configuring the Max-Age Time
 Configuring the Forward Delay Time
 Configuring Port Priority
 Configuring Path Cost
 Configuring the Auto-Designated port
 Monitoring STP Status
19.1.3 SSTP Configuration Task
19.1.3.1 Selecting STP Mode
Run the following command to configure the STP mode:
Command Purpose
spanning-tree mode {sstp | rstp} Selects the STP configuration.