Fault Tolerant Access Points Assumptions and Limitations

The following assumptions and limitations are associated with a fault tolerant access point network:

This feature supports a maximum of two redundant VPLS switches per protected VLAN (Virtual LAN) access point.
This feature operates only with ESRP (Extreme Standby Router Protocol) extended mode.
For ESRP to communicate between neighbor switches, you must configure a separate control VLAN with the same network layout as the set of protected customer VLANs. For example, consider two customer VLANs, VLAN-X and VLAN-Y. Both require protected VPLS access. If both VLAN-X and VLAN-Y have the same network layout (for example, both are part of a single EAPS (Extreme Automatic Protection Switching) domain), you must create an ESRP control VLAN that has the same layout as VLAN-X and VLAN-Y. Conversely, if VLAN-X and VLAN-Y do not have the same layout, you must create two separate ESRP domains with each control VLAN following the layout of the associated service VLAN(s).
All VPLS switches in the control VLAN need to have the same ESRP domain configured. VPLS switches that provide protected access to the VPLS network need to have ESRP enabled while other nodes in the control VLAN need to be ESRP aware.
The software does not validate the configuration between switches to determine if all VPLS switches for a protected VLAN are configured to be part of the same ESRP.

Published March 2020prev | next