Catalyst 9500 PvRSTP+ limitations

[norberto.padin]

Hello experts.

Today I have a customer using Cat6500 with 215 PvRSTP+ .

Does the Catalyst 9500 family supports 215 or more PvRSTP+ instances as standalone?

I read that when using Virtual StackWise it supports up to 128 PvRSTP+, could you please confirm that?

Thanks in advance.

Nor.

[Austin Sabio · Accepted solution]

Catalyst 9500 supports a maximum of 128 spanning-tree instances.

"The device supports per-VLAN spanning-tree plus (PVST+) or rapid PVST+ with a maximum of 128 spanning-tree instances. One spanning-tree instance is allowed per VLAN."

source: VLAN Configuration Guide, Cisco IOS XE Everest 16.5.1a (Catalyst 9500 Switches)

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9500/software/release/16-5/configuration_guide/vlan/b_165_vlan_9500_cg/b_165_vlan_9500_cg_chapter_01.html

I hope this helps. Good luck! 

-Austin