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HOW MANY VLANS in RSTP

prashanma
Level 1
Level 1

Can we add more than 128 VLANS to RSTP ? Can we all  4k vlans in RSTP instance

5 Replies 5

Reza Sharifi
Hall of Fame
Hall of Fame

You have more than 128 vlan instances? If you do, than MST maybe a better solution then RSTP.

 

HTH

What is reason for that ? I read that MST take more cpu.

Can't RSTP handle more than 128+ vlans

MST would likely consume more CPU than one instance of rapid-STP, but if you have more than a few VLANs, each running their own rapid-STP instance, and considering you probably only need a few MST regions, MST would then use less, possibly much less, CPU.

Perhaps this will help too: https://networklessons.com/spanning-tree/multiple-spanning-tree-mst

this is mean 255 vlans can handle is RSTP in all cisco switches. I don't find those details in C6500 series, 2960X and latest C9000series switches. Can I have details on that ?
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