3Com Switch 7750 Configuration Guide

908 CHAPTER 82: RRPP CONFIGURATION
Tangent ring networking
Figure 252 Tangent ring networking
There are two or more rings in the network topology and only one common node
exists between each pair of rings. In this case, one RRPP domain must be defined
for each ring.
Intersectant ring networking
Figure 253 Intersectant ring networking
There are two or more rings in the network topology and two common nodes
exist between each pair of rings. In this case, only one RRPP domain is to be
defined, in which one ring must be defined as the primary ring and the rest as
subrings.
RRPP on 3Com Switch
7750 Family
To employ RRPP on a Switch 7750 Ethernet switch, make sure that:
■ The chassis comes with the silk print XGbus.
Ring 2
Ring 1
Switch A
Switch B
Switch C
Switch E
Domain 1
Transit node
Switch D
Transit node
Transit node
Switch F
Master node
Domain 2
Transit node
Master node
Ring 2
Switch A Switch B
Switch C
Switch D
Switch E
Edge node
Master node
Transit node
Assistant edge node
Domain 1
Ring 1
Ring 2
Master node