Configuring an ERP Ring
Configuring ERP
page 11-16
OmniSwitch AOS Release 7 Network Configuration Guide
June 2013
-> erp-ring 1 guard-timer 100
To restore the Guard Timer back to the default value, use the no form of the erp-ring guard-timer
command. For example:
-> no erp-ring 1 guard-timer
To verify the configured Guard Timer, use the
command. For more information about this
command, see the
OmniSwitch CLI Reference Guide
.
Configuring ERP with VLAN Stacking NNIs
A VLAN Stacking Network Network Interface (NNI) can participate in an ERP ring. However, an NNI is
created through an association of a port with an SVLAN. Both STP and ERP cannot control the same
VLAN-port association (VPA). By default, the NNI to SVLAN association is controlled by STP.
To include an NNI in an ERP ring, specify ERP control at the time the NNI association is configured. This
is done using the
erp
parameter of the
command. For example:
-> ethernet-service svlan 1001 nni port 1/1
-> ethernet-service svlan 1001 nni port 1/2
The above commands configure ports 1/1 and 1/2 as NNI ports for SVLAN 1001. Note that the SVLAN
specified must already exist in the switch configuration.
To configure an ERP ring with NNI-SVLAN associations, use the
command but specify an
SVLAN ID for the service VLAN and the associated NNI ports as the ring ports. For example:
-> erp-ring 1 port1 1/1 port2 1/2 service-vlan 1001 level 2
-> erp-ring 1 enable
Note the following when configuring an ERP ring with VLAN Stacking NNI-SVLAN associations:
•
Only two ERP type NNI associations are allowed per SVLAN.
•
Configuring an ERP ring on 802.1q tagged port associations with SVLANs is not allowed.
•
Configuring an ERP Ring on an STP type NNI association with an SVLAN is not allowed.
•
Configuring an IMPVLAN as an ERP service VLAN is not allowed.
•
If an SVLAN that is not associated with any NNI ports is configured as the service VLAN for an ERP
ring, the NNI ring ports are automatically associated with that SVLAN at the time the ring is created.
•
SVLAN User Network Interface (UNI) associations are not eligible for ERP ring protection.
•
If the ERP type NNI ports are connected to the STP path through UNI ports, then STP BPDUs can be
tunneled with the help of VLAN-stacking mechanism.
•
Deleting an ERP service VLAN and it is associated NNI ports is only allowed when the ERP ring itself
is deleted using the
no
for of the
erp-ring
command. None of the VLAN Stacking CLI commands can
remove a service VLAN consisting of an NNI-SVLAN association.
Configuring ERP Protected SVLANs
An SVLAN becomes an ERP protected SVLAN when the SVLAN is associated with two NNI ports that
also serve as ring ports. In this case, the SVLAN is automatically protected as part of the association with
NNI ring ports.