Vlans And Spanning Tree Protocol; Table 2-1 Ports, Trunk Groups, And Vlans - Nortel Web OS Switch Software Application Manual

VLANs and Spanning Tree Protocol

Spanning Tree Protocol (STP) detects and eliminates logical loops in a bridged or switched
network. STP forces redundant data paths into a standby (blocked) state. When multiple paths
exist, Spanning Tree configures the network so that a switch uses only the most efficient path.
If that path fails, Spanning Tree automatically sets up another active path on the network to
sustain network operations.
The relationship between port, trunk groups, VLANs, and Spanning Trees is shown in
Table

Table 2-1 Ports, Trunk Groups, and VLANs

Switch Element
Port
Trunk group
VLAN
N
OTE
lengthy delays may occur. For more information on using STP in cross-redundant topologies,
see "Eliminating Loops with STP and VLANs" on page
212777-A, February 2002
2-1.
– Due to Spanning Tree's sequence of listening, learning, and forwarding or blocking,
Belongs to
Trunk group
or
One or more VLANs
One or more VLANs
One Spanning Tree group
Web OS 10.0 Application Guide
278.
Chapter 2: VLANs
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49