Requirements and Limitations
The solution shown in VPLS EAPS Redundancy Overview
has the following requirements and limitations:
- The redundant VPLS nodes must be core nodes.
- An EAPS (Extreme Automatic Protection Switching) common link is required between the
redundant VPLS nodes.
- The redundant VPLS nodes (Core 1 and Core 2) use PWs to connect to
each other and the other core nodes (Core 3 and Core 4).
- The redundant VPLS nodes use PWs to support the EAPS-protected VLANs,
not the EAPS common link.
- Works only with EAPS customer attachment ring.
- The EAPS master should not be on a
VPLS node.
- EAPS state used by VPLS to control state of PWs (Active/Ready).
- EAPS monitors common link state and ring state.
- VPLS on controller node uses EAPS state to set Active/Ready PWs.
- EAPS blocks customer-facing ports as normal.
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