Oh, ok. 254 instances. Page 776 [URL]
System Type: S4048-ON Software Version: 9.14(0.1) --- Hi, For this platform, what is the PVST limit?  From datasheet: Layer 2 VLANs: 4K MSTP: 64 instances There is no information mentioning the per-vlan spanning-tree instances limit on the box.   Let me know how many RSTP instances may I run on this switch?   Thank you!
S4048-ON | RSTP limitation