D-Link xStack Reference Manual page 168

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xStack DGS-3620 Series Layer 3 Managed Stackable Gigabit Switch Web UI Reference Guide
traffic in a ring topology. It ensures that there are no loops formed at the Ethernet layer.
One link within a ring will be blocked to avoid Loop (RPL, Ring Protection Link). When the failure happens,
protection switching blocks the failed link and unblocks the RPL. When the failure clears, protection switching
blocks the RPL again and unblocks the link on which the failure is cleared.
G.8032 Terms and Concepts
RPL
RPL Owner
R-APS
RAPS VLAN
Protected VLAN
This page is used to enable the ERPS function on the switch.
NOTE: STP and LBD should be disabled on the ring ports before enabling ERPS. The ERPS cannot
be enabled before the R-APS VLAN is created, and ring ports, RPL port, RPL owner, are
configured.
To view the following window, click L2 Features > ERPS Settings, as shown below:
The fields that can be configured are described below:
Parameter
ERPS State
ERPS Log
ERPS Trap
R-APS VLAN (1-4094)
Click the Apply button to accept the changes made.
Click the Find button to find a specific entry based on the information entered.
Ring Protection Link - Link designated by mechanism that is blocked during Idle
state to prevent loop on Bridged ring
Node connected to RPL that blocks traffic on RPL during Idle state and unblocks
during Protected state
Ring Automatic Protection Switching - Protocol messages defined in Y.1731 and
G.8032 used to coordinate the protection actions over the ring through RAPS VLAN
(R-APS Channel).
R-APS Channel - A separate ring-wide VLAN for transmission of R-APS messages
The service traffic VLANs for transmission of normal network traffic
Figure 5-103 ERPS Settings window
Description
Here the user can enable or disable the ERPS State.
Here the user can enable or disable the ERPS Log.
Here the user can enable or disable the ERPS Trap.
Specifies the VLAN which will be the R-APS VLAN.
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