D-Link DGS-3120-24TC - ERPS Settings (EI Mode Only)

xStack® DGS-3120 Series Managed Switch Web UI Reference Guide
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The fields that can be configured are described below:
Parameter Description
VLAN Name/VID List The VLAN to which the specified filtering action applies. Tick the All check box to
apply this feature to all the VLANs.
Multicast Filtering
Mode
This drop-down menu allows you to select the action the Switch will take when it
receives a multicast packet that requires forwarding to a port in the specified VLAN.
Forward All Groups – This will instruct the Switch to forward all multicast packets to
the specified VLAN.
Forward Unregistered Groups – The multicast packets whose destination is an
unregistered multicast group will be forwarded within the range of ports specified
above.
Filter Unregistered Groups – The multicast packets whose destination is a
registered multicast group will be forwarded within the range of ports specified
above.
Click the Apply button to accept the changes made.
Click the Find button to locate a specific entry based on the information entered.
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist.
ERPS Settings (EI Mode Only)
ERPS (Ethernet Ring Protection Switching) is the first industry standard (ITU-T G.8032) for Ethernet ring protection
switching. It is achieved by integrating mature Ethernet operations, administration, and maintenance (OAM) *
functions and a simple automatic protection switching (APS) protocol for Ethernet ring networks. ERPS provides
sub-50ms protection for Ethernet 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.
RPL (Ring Protection Link) – Link designated by mechanism that is blocked during Idle state to prevent loop on
Bridged ring
G.8032 Terms and Concepts
RPL Owner – Node connected to RPL that blocks traffic on RPL during Idle state and unblocks during Protected
state
R-APS (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).
RAPS VLAN (R-APS Channel) – A separate ring-wide VLAN for transmission of R-APS messages
Protected VLAN – The service traffic VLANs for transmission of normal network traffic
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.
Note that these parameters cannot be changed when ERPS is enabled.
To view the following window, click L2 Features > ERPS Settings, as show below: