Allied Telesis AT-GS900M Series User Manual

AT-GS900M Series CLI Reference
Section III: Layer 2 Switching 281
CREATE EPSR
Syntax
create epsr= epsr_name mode=aware|transit
controlvlan=
vlan_name | vlan_id [deletemcast]
Parameters
epsr_name
Specifies an Ethernet Protected Switched Ring (EPSR) domain
name.
aware
Specifies the role of the EPSR domain to the aware mode, which
the switch is a transit node with the aware function. See Table 33
on page 282.
transit
Specifies the role of the EPSR domain to the transit mode, which
the switch is a transit node with the full function. See Table 33 on
page 282.
controlvlan
Specifies a tagged VLAN that handles control messages for the
EPSR domain. Specifies a VLAN with a VLAN name or VLAN ID.
Here are guidelines for control VLAN:
– The control VLAN must have two member ports. Ports belong
to the same trunk group are considered as one port.
– The control VLAN cannot be a data VLAN or control VLAN for
another EPSR domain.
– A port on which STP, port security, or Port-based
authentication is enabled cannot be a member port of a control
VLAN.
deletemcast
When the deletemcast keyword is specified, the switch deletes the
multicast addresses for IGMP Snooping and MLD Snooping from
the FDB. Static MLD multicast addresses are not deleted.
Description
Use this command to create an Ethernet Protected Switched Ring (EPSR)
domain. You can create up to 8 EPSR domains per switch. EPSR protects
loops in Layer 2 and recovers switching in a ring topology. The master
node polls by sending health check messages to transit nodes; the transit

Allied Telesis AT-GS900M Series Specifications

General

Brand	Allied Telesis
Model	AT-GS900M Series
Category	Switch
Language	English