WLC 5520 with Active / Standby (RP) using LAG to Cisco 9K vPC
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03-16-2020 06:31 AM - edited 07-05-2021 11:51 AM
Currently have two WLC5520's running with redundancy, active standby. Each WLC has direct connection to two 9K Core switches configured with standard port-channel configuration. Switches are running HSRP. Also LAG has been enabled at WLC. This scenario is working as intended.
I would like to add VPC at the core switches to create a full mesh environment from two cores switches to both WLCs running lag. Core switches are running HSRP.
I understand when you use LAG it maps all interfaces into one session but as I using two WLC (active / standby) and would like to create VPCs at the core my question is, would this work? or would the WLC see the two VPCs as two devices therefore a conflict would take place. The idea is to have this configuration in place in case one core switch fails and therefore backup switch has reach ability to the active WLC.
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Wireless LAN Controller
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03-16-2020 07:36 AM
Hi,
Due to inherent restriction and platform architecture of the WLC, you can't use vPC on the now legacy WLC; not to multiple switches as you'll end up with problems on the data-plane. Look at this guide for some reference:
Regards,
Cristian Matei.
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03-16-2020 08:02 AM
Thanks for the update. The best design is my current design. Having two independent port-channels to both WLCs. Ill pass this on.
