Configuration Examples; Traditional Backbone Ring - 3Com CoreBuilder 5000 User Manual

2-12 D E
ESIGNING AND XPANDING THE
Configuration
Examples
Traditional Backbone
Ring
N
ETWORK
This section describes typical applications in using CoreBuilder 5000
Token Ring modules. The following example configurations are
described:

Traditional Backbone Ring

Collapsed Backbone Configuration
Single Extended Ring Configuration
The traditional backbone ring configuration assumes:
1 Each floor or department in an organization forms its own Token Ring
LAN.
2 A bridge connects each LAN to a backbone ring, thereby allowing
communication between users on different LANs.
3 The backbone ring extends through the riser of the building through
the CoreBuilder 5000 Dual Fiber Repeater Modules.
In the traditional backbone ring scenario, the CoreBuilder 5000 Dual
Fiber Repeater Modules are interconnected through their
Ring-In/Ring-Out ports. The following conditions exist:
All Repeater Modules are assigned to the same backplane ring or
are set to isolated mode.
For each separate LAN, the Token Ring Bridges and Token Ring
Media Modules (in this case, CoreBuilder 5000 Token Ring Passive
Media Modules) are assigned to the same backplane ring.
Each Token Ring Bridge connects to a Repeater Module through a
connection from the bridge to one of the 10-lobe ports on the
Repeater Module.