Allied Telesis x900-48FE-N User Manual

Page 8 | AlliedWare™ OS How To Note: EPSR

This section first outlines, step-by-step, how to configure EPSR. Then it discusses 

, if you need to do this after initial configuration.

 

EPSR does not in itself limit the number of nodes that can exist on any given ring. Each switch 
can participate in up to 16 rings.

If you already have a ring in a live network, disconnect the cable between any two of the 
nodes before you start configuring EPSR, to prevent a loop. 

 

On each switch, perform the following configuration steps. Configuration of the master node 
and each transit node is very similar.

 

This step creates the control VLAN and adds the ring ports to it as tagged ports. 

Enter the commands:

create vlan=control-vlan-name vid=control-vid

add vlan=control-vid port=ring-ports frame=tagged

Note that you can use trunk groups for the ring ports.

This step creates the data VLAN (or VLANs—you can have as many as you want) and 
adds the ring ports as tagged ports. 

Enter the commands:

create vlan=data-vlan-name vid=data-vid

add vlan=data-vid port=ring-ports frame=tagged

The two ring ports must belong to the control VLAN and all data VLANs.

1. Connect your switches into a ring

2. On each switch, configure EPSR

i.

Configure the control VLAN

ii. Configure the data VLAN