EAPS Shared Port Configuration Rules

The following rules apply to EAPS (Extreme Automatic Protection Switching) shared port configurations:

Each common link in the EAPS network must have a unique link ID, which is configured at the shared port at each end of the link.
The shared port mode configured on each side of a common link must be different from the other; one must be a controller and one must be a partner.
The controller and partner shared ports on either side of a common link must have the same
link ID. The common link is established only when the shared ports at each end of the common link have the same link ID.
There can be up to two shared ports per switch.
There cannot be more than one controller on a switch.

Valid combinations on any one switch are:
- 1 controller
- 1 partner
- 1 controller and 1 partner
- 2 partners
A shared port cannot be configured on an EAPS master‘s secondary port.

Note
When a common link fails, one of the segment ports becomes the active-open port, and all other segment ports are blocked to prevent a loop for the protected VLANs. For some topologies, you can improve network performance during a common link failure by selecting the port numbers to which segments connect. For information on how the active-open port is selected, see Common Link Fault Detection and Response.

Published March 2020prev | next