User's Manual
Table Of Contents
- Contents
- Preface
- The Command Line Interface
- First-Time Configuration
- Using the Setup Utility
- Setting Passwords
- Menu Basics
- The Information Menu
- Information Menu
- System Information
- Layer 2 Information
- Layer 3 Information
- IP Routing Information
- ARP Information
- BGP Information
- BGP Peer information
- BGP Summary information
- OSPF Information
- Routing Information Protocol Information
- IP Information
- IGMP Multicast Group Information
- IGMP Group Information
- IGMP Multicast Router Port Information
- IGMP Mrouter Information
- VRRP Information
- Quality of Service Information
- 802.1p Information
- Access Control List Information
- Link Status Information
- Port Information
- Logical Port to GEA Port Mapping
- Fiber Port SFP Status
- Information Dump
- The Statistics Menu
- The Configuration Menu
- Configuration Menu
- Viewing, Applying, and Saving Changes
- System Configuration
- Port Configuration
- Layer 2 Configuration
- 802.1x Configuration
- Rapid Spanning Tree Protocol/ Multiple Spanning Tree Protocol Configuration
- Common Internal Spanning Tree Configuration
- Spanning Tree Configuration
- GVRP Configuration
- GVRP Port Configuration
- Trunk Configuration
- IP Trunk Hash Configuration
- LACP Configuration
- Layer 2 Failover Configuration
- VLAN Configuration
- Protocol-based VLAN Configuration
- Private VLAN Configuration
- Layer 3 Configuration
- IP Interface Configuration
- Default Gateway Configuration
- IP Static Route Configuration
- IP Multicast Route Configuration
- ARP Configuration
- IP Forwarding Configuration
- Network Filter Configuration
- Routing Map Configuration
- Routing Information Protocol Configuration
- Open Shortest Path First Configuration
- Border Gateway Protocol Configuration
- IGMP Configuration
- Domain Name System Configuration
- Bootstrap Protocol Relay Configuration
- VRRP Configuration
- Quality of Service Configuration
- Access Control List Configuration
- Port Mirroring Configuration
- Setup
- Dump
- Saving the Active Switch Configuration
- Restoring the Active Switch Configuration
- The Operations Menu
- The Boot Options Menu
- The Maintenance Menu
- Alteon OS Syslog Messages
- Alteon OS SNMP Agent
- Glossary
- Index

Alteon OS Command Reference
The Configuration Menu
22743W7774, May 2007
/cfg/l2/stg <STP group number>
Spanning Tree Configuration
Alteon OS supports the IEEE 802.1d Spanning Tree Protocol (STP). STP is used to prevent
loops in the network topology. Up to 128 Spanning Tree Groups can be configured on the
switch (STG 128 is reserved for management).
NOTE – When VRRP is used for active/active redundancy, STG must be enabled.
[Spanning Tree Group 1 Menu]
brg - Bridge parameter menu
port - Port parameter menu
add - Add VLAN(s) to Spanning Tree Group
remove - Remove VLAN(s) from Spanning Tree Group
clear - Remove all VLANs from Spanning Tree Group
on - Globally turn Spanning Tree ON
off - Globally turn Spanning Tree OFF
default - Default Spanning Tree and Member parameters
cur - Display current bridge parameters
Table 6-37 Spanning Tree Configuration Menu (/cfg/l2/stg)
Command Syntax and Usage
brg
Displays the Bridge Spanning Tree Menu. To view menu options, see page 229.
port <port alias or number>
Displays the Spanning Tree Port Menu. To view menu options, see page 231.
add <VLAN number (1-4094)>
Associates a VLAN with a spanning tree and requires an external VLAN ID as a parameter.
remove <VLAN number (1-4094)>
Breaks the association between a VLAN and a spanning tree and requires an external VLAN ID as
a parameter.
clear
Removes all VLANs from a spanning tree.
on
Globally enables Spanning Tree Protocol.
STG is turned on by default.
off
Globally disables Spanning Tree Protocol.