Using 802.1Q 2005 Multiple Spanning Tree; Spanning Tree Specifications; Spanning Tree Bridge Parameter Defaults - Alcatel-Lucent OmniSwitch 6850-48 Network Configuration Manual

Spanning Tree Specifications

Spanning Tree Specifications
IEEE Standards supported
Spanning Tree Protocols supported
Platforms Supported
Spanning Tree Operating Modes supported Flat mode - one spanning tree instance per switch
Spanning Tree port eligibility
Maximum 1x1 Spanning Tree instances
per switch
Maximum flat mode Multiple Spanning
Tree Instances (MSTI) per switch
Number of Ring Rapid Spanning Tree
(RRSTP) rings supported
CLI Command Prefix Recognition

Spanning Tree Bridge Parameter Defaults

Parameter Description
Spanning Tree operating mode
Spanning Tree protocol
Priority value for a Multiple Spanning
Tree Instance (MSTI).
Hello time interval between each BPDU
transmission.
Maximum aging time allowed for Span-
ning Tree information learned from the
network.
Spanning Tree port state transition time.
BPDU switching status.
Path cost mode
page 12-2
802.1D–Media Access Control (MAC) Bridges
802.1w–Rapid Reconfiguration (802.1D Amendment 2)
802.1Q 2005–
802.1D Standard Spanning Tree Algorithm and Protocol
(STP)
802.1w Rapid Spanning Tree Algorithm and Protocol (RSTP)
Multiple Spanning Tree Algorithm and Protocol (MSTP)
OmniSwitch 6400, 6800, 6850, 6855, and 9000
1x1 mode - one spanning tree instance per VLAN
Fixed ports (non-mobile)
802.1Q tagged ports
Link aggregate of ports
252
16 MSTI, in addition to the Common and Internal Spanning
Tree instance (also referred to as MSTI 0).
128
8 (OmniSwitch 6400)
All Spanning Tree commands support prefix recognition. See
the "Using the CLI" chapter in the OmniSwitch AOS Release
6 Switch Management Guide for more information.
Command
bridge mode
bridge protocol
bridge msti priority
bridge hello time
bridge max age
bridge forward delay
bridge bpdu-switching
bridge path cost mode
OmniSwitch AOS Release 6 Network Configuration Guide

Using 802.1Q 2005 Multiple Spanning Tree

Virtual Bridged Local Area Networks
Default
1x1 (a separate Spanning Tree
instance for each VLAN)
RSTP (802.1w)
32768
2 seconds
20 seconds
15 seconds
Disabled
AUTO (16-bit in 1x1 mode, 32-
bit in flat mode)
September 2009