Stp Configurations - 3Com SuperStack II Switch 3000 10/100 User Manual

STP Configurations

Figure 5-12 shows two possible STP configurations
using SuperStack II Switch units:
Configuration 1 — Redundancy for Back-
bone Link
In this configuration, a Desktop Switch and a
Switch 3000 10/100 both have STP enabled and
are connected by two Fast Ethernet links. STP dis-
covers a duplicate path and disables one of the
links. If the enabled link breaks, the disabled link
becomes re-enabled, therefore maintaining con-
nectivity.
Configuration 2 — Redundancy through
Meshed Backbone
In this configuration, four Switch 3000 10/100
units are connected such that there are multiple
paths between each one. STP discovers the dupli-
cate paths and disables two of the links. If an
enabled link breaks, one of the disabled links
becomes re-enabled, therefore maintaining con-
nectivity.
STP configurations
Figure 5-12
Spanning Tree Protocol 5-15