Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 1497)

EPSR Introduction and Configuration
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 57.15
Single Ring, Dual Domain Network
This example shows an EPSR configuration where two EPSR domains share the same
physical ring. This configuration enables two sets of users to run totally separate Layer 2
networks. Better load distribution around the ring can be achieved by configuring
different nodes to be the master for each ring.
Figure 57-8: EPSR single ring network, two domain network.
Control VLAN (control_ring) Ring_A
Transit Node
Ring_A
Transit Node
Ring_A
Transit Node
Ring_B
Master Node
Ring_B
Master Node
Ring_A
Transit Node
Ring_B
Transit Node
Ring_B
Transit Node
Ring_A
EPSR 4.eps
Date VLAN (data_ring) Ring_A
Control VLAN (control_ring) Ring_B
EPSR Ring
Date VLAN (data_ring) Ring_B
Port 1.0.3
Primary
Ring_B
Port 4
Port 1.0.4
Port 1.0.4 Port 3
Port 1.0.3
Port 1.0.3
Port 1.0.4
Secondary
Ring_B
Port 1.0.2
Secondary
Ring_A
Port 1.0.2 Port 1.0.1
Port 1.0.1 Port 1.0.2
Port 1.0.2 Port 1.0.1
Port 1.0.1
Primary
Ring_A
Node 1
Node 4
Node 3
Node 2
Cont
rol V
LA
N R
ing
_A
D
at
a V
LA
N
R
in
g
_
A
D
at
a V
LA
N
R
in
g
_
B
Contr
ol V
LAN
Rin
g_
B