User guide
Table Of Contents
- Contents
- Figures
- Tables
- Preface
- Section I
- Basic Operations
- Chapter 1
- Basic Switch Parameters
- Configuring the Switch’s Name, Location, and Contact
- Changing the Manager and Operator Passwords
- Setting the System Date and Time
- Rebooting a Switch
- Pinging a Remote System
- Returning the AT-S63 Management Software to the Factory Default Values
- Displaying the IP Address of the Local Interface
- Displaying System Information
- Chapter 2
- Port Parameters
- Chapter 3
- Enhanced Stacking
- Chapter 4
- SNMPv1 and SNMPv2c
- Chapter 5
- MAC Address Table
- Chapter 6
- Static Port Trunks
- Chapter 7
- Port Mirroring
- Section II
- Advanced Operations
- Chapter 8
- File System
- Chapter 9
- File Downloads and Uploads
- Chapter 10
- Event Logs and Syslog Client
- Chapter 11
- Classifiers
- Chapter 12
- Access Control Lists
- Chapter 13
- Class of Service
- Chapter 14
- Quality of Service
- Chapter 15
- Denial of Service Defenses
- Chapter 16
- IGMP Snooping
- Section III
- SNMPv3
- Chapter 17
- SNMPv3
- Configuring the SNMPv3 Protocol
- Enabling or Disabling SNMP Management
- Configuring the SNMPv3 User Table
- Configuring the SNMPv3 View Table
- Configuring the SNMPv3 Access Table
- Configuring the SNMPv3 SecurityToGroup Table
- Configuring the SNMPv3 Notify Table
- Configuring the SNMPv3 Target Address Table
- Configuring the SNMPv3 Target Parameters Table
- Configuring the SNMPv3 Community Table
- Displaying SNMPv3 Tables
- Section IV
- Spanning Tree Protocols
- Chapter 18
- Spanning Tree and Rapid Spanning Tree Protocols
- Chapter 19
- Multiple Spanning Tree Protocol
- Section V
- Virtual LANs
- Chapter 20
- Port-based and Tagged VLANs
- Chapter 21
- GARP VLAN Registration Protocol
- Section VI
- Port Security
- Chapter 22
- MAC Address-based Port Security
- Chapter 23
- 802.1x Port-based Network Access Control
- Section VII
- Management Security
- Chapter 24
- Encryption Keys, PKI, and SSL
- Chapter 25
- Secure Shell (SSH)
- Chapter 26
- TACACS+ and RADIUS Protocols
- Chapter 27
- Management Access Control List
- Index
Chapter 18: Spanning Tree and Rapid Spanning Tree Protocols
280 Section IV: Spanning Tree Protocols
Port Cost
The spanning tree algorithm uses the cost parameter to decide which
port provides the lowest cost path to the root bridge for that LAN. The
range is 0 to 65,535. The default setting is Auto-detect, which sets port
cost depending on the speed of the port. If you select Auto-Detect, the
management software assigns a value of 100 if the port is operating at
10 Mbps, 10 for 100 Mbps, and 4 for one gigabit.
4. After you have configured the parameters, click Apply.
5. To permanently save your changes, select the Save Config option in
the Configuration menu.
Displaying the
STP Settings
To display the STP settings, perform the following procedure:
1. From the Home page, select Monitoring.
2. From the Monitoring menu, select the Layer 2 option.
3. Select the Spanning Tree tab.
Table 6. Port Priority Value Increments
Increment
Bridge
Priority
Increment
Bridge
Priority
008128
1 16 9 144
2 3210160
3 48 11 176
4 6412192
5 8013208
6 9614224
7 112 15 240