Supermicro SSE-G2252, User Manual

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Chapter 14: Basic Administration Protocols
Ethernet Ring Protection Switching
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The Control VLAN must not be configured as a Layer 3 interface
(with an IP address), a dynamic VLAN (with GVRP enabled), nor as
a private VLAN.
•
In addition, only ring ports may be added to the Control VLAN. No
other ports can be members of this VLAN.
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Also, the ring ports of the Control VLAN must be tagged.
Once the ring has been activated, the configuration of the control VLAN
cannot be modified. Use the Admin Status parameter to stop the ERPS
ring before making any configuration changes to the control VLAN.
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Node State – Refer to the parameters for the Show page.
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Node Type – Shows ERPS node type as one of the following:
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None – Node is neither Ring Protection Link (RPL) owner nor
neighbor. (This is the default setting.)
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RPL Owner – Specifies a ring node to be the RPL owner.
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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).
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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.
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RPL Neighbor – Specifies a ring node to be the RPL neighbor.
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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.
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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.