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
22143W7774, May 2007
/cfg/l2/mrst
Rapid Spanning Tree Protocol/
Multiple Spanning Tree Protocol Configuration
Alteon OS supports the IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) and IEEE 802.1s
Multiple Spanning Tree Protocol (MSTP). MSTP allows you to map many VLANs to a small
number of spanning tree groups, each with its own topology.
Up to 32 Spanning Tree Groups can be configured in mstp mode. MRST is turned off by
default.
NOTE – When Multiple Spanning Tree is turned on, VLAN 4095 is moved from Spanning Tree
Group 128 to the Common Internal Spanning Tree (CIST). When Multiple Spanning Tree is
turned off, VLAN 4095 is moved back to Spanning Tree Group 128.
[Multiple Spanning Tree Menu]
cist - Common and Internal Spanning Tree menu
name - Set MST region name
rev - Set revision level of this MST region
maxhop - Set Maximum Hop Count for MST (4 - 60)
mode - Spanning Tree Mode
on - Globally turn Multiple Spanning Tree (MSTP/RSTP) ON
off - Globally turn Multiple Spanning Tree (MSTP/RSTP) OFF
cur - Display current MST parameters
Table 6-33 MSTP/RSTP Configuration Menu Options (/cfg/l2/mrst)
Command Syntax and Usage
cist
Displays the Common Internal Spanning Tree (CIST) Menu. To view menu options, see page 223.
name <1-32 characters>
Configures a name for the MSTP region. All devices within a MSTP region must have the same
region name.
rev <1-65535>
Configures a version number for the MSTP region. The version is used as a numerical identifier
for the region. All devices within a MSTP region must have the same version number.
maxhop <4-60>
Configures the maximum number of bridge hops a packet may to traverse before it is dropped. The
range is from 4 to 60 hops. The default is 20.