Edge-Core ECS4620-28T User Manual

Chapter 13 | Basic Administration Protocols
Ethernet Ring Protection Switching
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◆ Node Type – Shows ERPS node type as one of the following:
■
None – Node is neither Ring Protection Link (RPL) owner nor neighbor.
(This is the default setting.)
■
RPL Owner – Specifies a ring node to be the RPL owner.
■
Only one RPL owner can be configured on a ring. The owner blocks
traffic on the RPL during Idle state, and unblocks it during Protection
state (that is, when a signal fault is detected on the ring or the
protection state is enabled with the Forced Switch or Manual Switch
commands on the Configure Operation page).
■
The east and west connections to the ring must be specified for all ring
nodes. When this switch is configured as the RPL owner, the west ring
port is automatically set as being connected to the RPL.
■
RPL Neighbor – Specifies a ring node to be the RPL neighbor.
■
The RPL neighbor node, when configured, is a ring node adjacent to
the RPL that is responsible for blocking its end of the RPL under normal
conditions (i.e., the ring is established and no requests are present in
the ring) in addition to the block at the other end by the RPL Owner
Node. The RPL neighbor node may participate in blocking or
unblocking its end of the RPL, but is not responsible for activating the
reversion behavior.
■
Only one RPL owner can be configured on a ring. If the switch is set as
the RPL owner for an ERPS domain, the west ring port is set as one end
of the RPL. If the switch is set as the RPL neighbor for an ERPS domain,
the east ring port is set as the other end of the RPL.
■
The east and west connections to the ring must be specified for all ring
nodes. When this switch is configured as the RPL neighbor, the east
ring port is set as being connected to the RPL.
■
Note that is not mandatory to declare a RPL neighbor.
◆ Revertive – Sets the method of recovery to Idle State through revertive or non-
revertive mode. (Default: Enabled)
■
Revertive behavior allows the switch to automatically return the RPL from
Protection state to Idle state through the exchange of protocol messages.
Non-revertive behavior for Protection, Forced Switch (FS), and Manual
Switch (MS) states are basically the same. Non-revertive behavior requires
the RPL to be restored from Protection state to Idle state using the Clear
command (Configure Operation page).
■
Recovery for Protection Switching – A ring node that has one or more ring
ports in an SF (Signal Fail) condition, upon detecting the SF condition
cleared, keeps at least one of its ring ports blocked for the traffic channel
and for the R-APS channel, until the RPL is blocked as a result of ring

Edge-Core ECS4620-28T Specifications

General

Brand	Edge-Core
Model	ECS4620-28T
Category	Switch
Language	English