CLI Reference Guide-R04

Chapter 21 | ERPS Commands
– 546 –
Configuration Guidelines for ERPS
1. Create an ERPS ring: Create a ring using the erps ring command. The ring name
is used as an index in the G.8032 database.
2. Configure the east and west interfaces: Each node on the ring connects to it
through two ring ports. Use the ring-port command to configure one port
connected to the next node in the ring to the east (or clockwise direction); and
then use the ring-port command again to configure another port facing west in
the ring.
3. Configure VLAN groups to assign to specific ERPS instances using the erps vlan-
group command.
4. Configure ERPS instances using the erps instance command and then associate
the instances to a configured ring using the physical-ring command.
5. Configure the RPL owner: Configure one node in the ring as the Ring Protection
Link (RPL) owner using the rpl owner command. When this switch is configured
as the RPL owner, the west ring port is set as being connected to the RPL. Under
normal operations (Idle state), the RPL is blocked to ensure that a loop cannot
form in the ring. If a signal failure brings down any other link in the ring, the RPL
non-revertive Enables non-revertive mode, which requires the protection
state on the RPL to manually cleared
ERPS Inst
raps-def-mac Sets the switch’s MAC address to be used as the node identifier
in R-APS messages
ERPS Inst
raps-without-vc Terminates the R-APS channel at the primary ring to sub-ring
interconnection nodes
ERPS Inst
version Specifies compatibility with ERPS version 1 or 2 ERPS Inst
inclusion-vlan Specifies the VLAN groups to be included in the ERPS protection
ring.
ERPS Inst
physical-ring Associates an ERPS instance with an existing physical ring ERPS Inst
erps forced-switch Blocks the specified ring port PE
erps manual-switch Blocks the specified ring port, in the absence of a failure or an
erps forced-switch command
PE
erps clear Manually clears protection state which has been invoked by a
Forced Switch or Manual Switch command, and the node is
operating under non-revertive mode; or before the WTR or WTB
timer expires when the node is operating in revertive mode
PE
clear erps statistics Clears statistics for all ERPS instances or a specific instance PE
show erps statistics Displays statistics for all configured instances, or for a specified
instance
PE
show erps Displays status information for all configured VLAN groups,
rings, or instances.
PE
Table 98: ERPS Commands (Continued)
Command Function Mode