`erps ring <ringid> instance <id> rpl`

Syntax

erps ring <ringid>
        instance <id> rpl <port0|port1>

Description

In ERPS, there is a central node called RPL Owner Node which blocks one of the ports to ensure that there is no loop formed for the Ethernet traffic. The link blocked by the RPL owner node is called the Ring Protection Link or RPL. The node at the other end of the RPL is known as RPL Neighbor Node. It uses R-APS control messages to coordinate the activities of switching the RPL link on and off.

This command specifies which of the ERPS ring ports is the RPL.

The no form of this command removes the RPL port configuration from the ERPS ring instance.

Command context

config-erps-ring-<ringid>

Parameters

<ringid>: Required, specifies the ID of the ring. Range: 1-239
<id>: Required, specifies the ERPS ring instance identifier. Range: 1-2.
<port0>: Required, configure port0 to be RPL port in this ERPS ring instance.
<port1>: Required, configure port1 to be RPL port in this ERPS ring instance.

Authority

Administrators

Examples

Configure port0 to be RPL port in this ERPS ring instance:

switch(config)# erps ring 3
switch(config-erps-ring-3)# instance 2
switch(config-erps-ring-3-inst-2) role rpl-owner
switch(config-erps-ring-3-inst-2) rpl port0

Configure port1 to be RPL port in this ERPS ring instance:

switch(config)# erps ring 3
switch(config-erps-ring-3)# instance 3
switch(config-erps-ring-3-inst-2) role rpl-neighbour
switch(config-erps-ring-3-inst-2) rpl port1

Remove the RPL port configuration from the ERPS ring Instance:

switch(config)# erps ring 3
switch(config-erps-ring-3)# instance 2
switch(config-erps-ring-3-inst-2) no rpl port0