Allied Telesis RAPIER I - Manual (Page 207)

Ethernet Protection Switching Ring (EPSR) 9
Single Ring, Dual Domain Network
This example shows a slightly more complex EPSR configuration where two
EPSR domains share the same physical ring. This configuration enables two
sets of users to run totally separate layer two networks. Better load distribution
around the ring can be achieved by configuring different nodes to be the
master for each ring.
Figure 1-5: EPSR Single Ring Network, Two Domain Network.
Example commands to configure the single ring, dual domain network are
shown in
Figure 1-6 on page 1-10 , Figure 1-7 on page 1-11 , and Figure 1-8 on
page 1-12 .
Control VLAN (control_ring) Ring_A
Transit Node 1
Ring_A
Transit Node
Ring_A
Transit Node 3
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 3
Primary
Ring_B
Port 4
Port 4
Port 4 Port 3
Port 3
Port 3
Port 4
Secondary
Ring_B
Port 2
Secondary
Ring_A
Port 2 Port 1
Port 1 Port 2
Port 2 Port 1
Port 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
Cont
rol V
LA
N R
ing
_B