Spanning Tree Specifications; Spanning Tree Defaults - Alcatel OmniSwitch 6800 Series Network Configuration Manual

Spanning Tree Specifications

Spanning Tree Specifications
IEEE Standards supported
Spanning Tree Operating Modes supported Flat mode - one spanning tree instance per switch
Spanning Tree Protocols supported
Spanning Tree port eligibility
Maximum number of Spanning Tree
instances per switch or stack
CLI Command Prefix Recognition

Spanning Tree Defaults

Parameter Description
Spanning Tree operating mode
BPDU switching status.
Spanning Tree Protocol
Spanning Tree priority level for the
bridge (VLAN)
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.
Spanning Tree port administrative state
Spanning Tree port priority level
Port cost contributed to path towards the
Spanning Tree root.
Port state management mode
Type of port connection
page 5-2
802.1D–Media Access Control (MAC) Bridges
802.1w–Rapid Reconfiguration (802.1D Amendment 2)
802.1Q–Virtual Bridged Local Area Networks
1x1 mode - one spanning tree instance per VLAN
802.1D Standard Spanning Tree Algorithm and Protocol
(STP)
802.1w Rapid Spanning Tree Algorithm and Protocol (RSTP)
Fixed ports (non-mobile)
802.1Q tagged ports
Link aggregate of ports
254
All Spanning Tree commands support prefix recognition. See
the "Using the CLI" chapter in the OmniSwitch 6800 Switch
Management Guide for more information.
Command
bridge mode
bridge bpdu-switching
bridge protocol
bridge priority
bridge hello time
bridge max age
bridge forward delay
bridge slot/port
bridge slot/port priority
bridge slot/port path cost
bridge slot/port mode
bridge slot/port connection
OmniSwitch 6800 Series Network Configuration Guide
Configuring Spanning Tree Parameters
Default
1x1 (a separate Spanning Tree
instance for each VLAN)
Disabled
802.1D (standard)
32768
2 seconds
20 seconds
15 seconds
Enabled
7
0 (cost is based on port speed)
Dynamic (Spanning Tree Algo-
rithm determines port state)
auto point to point
November 2004