Configuring ERP ERP Configuration Overview and Guidelines
OmniSwitch AOS Release 7 Network Configuration Guide June 2013 page 11-13
ERP Configuration Overview and Guidelines
Configuring ERP requires several steps. These steps are outlined here and further described throughout
this section. For a brief tutorial on configuring ERP, see ““Quick Steps for Configuring ERP with Stan-
dard VLANs” on page 11-11.
By default, ERP is disabled on a switch. Configuring ERP consists of these main tasks:
1 Configure the basic components of an ERP ring (ring ports, service VLAN, and MEG level). See
“Configuring an ERP Ring” on page 11-14.
2 Tag VLANs for ring protection. See “Adding VLANs to Ring Ports” on page 11-14.
3 Configure an RPL port. When a ring port is configured as an RPL port, the node to which the port
belongs becomes the RPL owner. The RPL owner is responsible for blocking and unblocking the RPL.
See “Configuring an RPL Port” on page 11-15.
4 Change the Wait-To-Restore timer value. This timer value determines how long the RPL owner waits
before restoring the RPL to a forwarding state. See “Setting the Wait-to-Restore Timer” on page 11-15.
5 Change the Guard timer value. This timer value determines an amount of time during which ring nodes
ignore R-APS messages. See “Setting the Guard Timer” on page 11-15.
6 Configure the ring port to receive the loss of connectivity event for a Remote Ethernet OAM endpoint.
See “Configuring ERP with VLAN Stacking NNIs” on page 11-16.
7 Configure a VLAN Stacking NNI-to-SVLAN association for ERP control. This is done to include an
SVLAN in a ring configuration. See “Configuring ERP with VLAN Stacking NNIs” on page 11-16.
8 Clear ERP statistics. Commands to clear ERP statistics for a single ring or multiple rings are described
in “Clearing ERP Statistics” on page 11-17.
Configuration Guidelines
Use the following guidelines when configuring ERP for the switch:
• Physical switch ports and logical link aggregate ports can be configured as ERP ring ports. This also
includes VLAN Stacking Network Network Interface (NNI) ports.
• ERP is not supported on mobile ports, mirroring ports, link aggregate member ports, multicast VLAN
receiver ports (ERP is supported on Multicast VLAN sender ports only), or VLAN Stacking User
Network Interface (UNI) ports.
• An ERP ring port can belong to only one ERP ring at a time.
• STP is automatically disabled when ERP is enabled on any port.
• If the ERP switch participates in an Ethernet OAM MaintenanceDomain(MD), configure the
Management Entity Group (MEG) level of the ERP service VLAN with the number that is used for the
Ethernet OAM MD.
• The Service VLAN can belong to only one ERP ring at a time and must be a static VLAN. Note that
the service VLAN is also a protected VLAN.
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