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
23143W7774, May 2007
/cfg/l2/stg <STP Group number>/port <port alias or
number>
Spanning Tree Port Configuration
By default for STP/PVST+, Spanning Tree is turned Off for internal ports and management
ports, and turned On for external ports. By default for RSTP/MSTP, Spanning Tree is turned
Off for internal ports and management ports, and turned On for external ports, with internal
ports configured as Edge ports. STG port parameters include:
Port priority
Port path cost
The port option of STG is turned on by default.
[Spanning Tree Port EXT1 Menu]
prior - Set port Priority (0-255)
cost - Set port Path Cost (1-65535 (802.1d) /
1-200000000 (MSTP/RSTP) /0 for auto)
link - Set port link type (auto, p2p, or shared; default: auto)
edge - Enable/disable edge port
on - Turn port's Spanning Tree ON
off - Turn port's Spanning Tree OFF
cur - Display current port Spanning Tree parameters
Table 6-39 Spanning Tree Port Menu Options (/cfg/l2/stg/port)
Command Syntax and Usage
prior <new port Priority (0-255)>
Configures the port priority. The port priority helps determine which bridge port becomes the des-
ignated port. In a network topology that has multiple bridge ports connected to a single segment,
the port with the lowest port priority becomes the designated port for the segment. The default
value is 128.
RSTP/MSTP: The range is 0 to 240, in steps of 16 (0, 16, 32...) and the default is 128.
cost <new port Path Cost (1-65535, 0 for default)>
Configures the port path cost. The port path cost is used to help determine the designated port for a
segment. Generally speaking, the faster the port, the lower the path cost. The default is 19 for
100Mbps ports, 4 for 1Gb ports and 2000 for 10 Gb ports. A value of 0 (zero) indicates that the
default cost will be computed for an auto negotiated link speed.
link <auto, p2p, or shared; default: auto>
Defines the type of link connected to the port, as follows:
auto: Configures the port to detect the link type, and automatically match its settings.
p2p: Configures the port for Point-To-Point protocol.
shared: Configures the port to connect to a shared medium (usually a hub).