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Allied Telesis AT 9924SP AT-9924SP-30 AT-9924SP-30 Software Manual page 24

Configure epsr (ethernet protection switching ring) to protect a ring from loops

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1. Configure stacking on the master node for the EPSR domain (host1)
The following commands must be entered into the CLI of this particular switch.
First, give the switch a host ID number so that the stack can identify it:
set system hostid=1 serialnumber=12345678
set system name=host1
Create the stacking VLAN and add the ring ports to it. Note the port numbering notation—
these are ports 1 and 2 on stacking host 1. Because this VLAN will also be the EPSR control
VLAN, this step also adds the ring ports to the control VLAN. Use the commands:
create vlan=stack vid=1000
add vlan=1000 port=1.0.1-1.0.2 frame=tagged
delete vlan=1 port=1.0.1-1.0.2
Add the stacking VLAN to the stack and enable stacking:
add stack interface=vlan1000
enable stack
2. Configure stacking on the first transit node (host2)
These commands must be entered into the CLI of this particular switch.
set system hostid=2 serialnumber=23456789
set system name=host2
create vlan=stack vid=1000
add vlan=1000 port=2.0.1-2.0.2 frame=tagged
delete vlan=1 port=2.0.1-2.0.2
add stack interface=vlan1000
enable stack
3. Configure stacking on the second transit node (host3)
These commands must be entered into the CLI of this particular switch.
set system hostid=3 serialnumber=34567890
set system name=host3
create vlan=stack vid=1000
add vlan=1000 port=3.0.1-3.0.2 frame=tagged
delete vlan=1 port=3.0.1-3.0.2
add stack interface=vlan1000
enable stack
Page 24 | AlliedWare™ OS How To Note: EPSR
Example 5: EPSR with management stacking

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