Specifications

Management Guide CLI
TigerAccess™ EE
SMC7824M/VSW 269
8.3.5 Configuring MSTP/PVSTP Mode
To select the spanning-tree mode, use the following command.
Command Mode Description
spanning-tree mode { mst |
rapid-pvst}
Bridge
Configures a spanning-tree mode:
mst: Multiple Spanning Tree Protocol (default)
rapid-pvst: Per-vlan Rapid STP
To delete the configured spanning-tree mode, use the following command.
Command Mode Description
no spanning-tree mode Bridge Deleted a configured spanning-tree mode.
8.3.6 STP Basic Configuration
To configure STP, use the following steps.
Step 1
Enable STP function using the spanning-tree command.
Step 2
Configure detail options if specific commands are required.
8.3.6.1 Path-cost Method
After deciding a root switch, you need to decide to which route you will forward the packet.
To do this, the standard is a path-cost.
Generally, a path cost depends on the transmission speed of LAN interface in the switch.
The following table shows the path cost according to the transmit rate of LAN interface.
You can use same commands to configure STP and RSTP, but their path-costs are to-
tally different. Please be careful not to make mistake.
Transmit Rate (bps) Path-cost
4M 250
10M 100
100M 19
1G 4
10G 2
Tab. 8.2 STP Path-cost (short)