[c-nsp] Spanning tree limits on 4500

Clinton Work clinton at scripty.com
Mon Nov 23 14:15:59 EST 2009


The Catalyst 4500 supports 3000 logical instances with the SupV from 
what I was able to find.  With MST, the capacity is further increased:

MST logical instances = access ports + ( trunk ports * MST instances) 


John Wilkes wrote:
> What are the limits for spanning tree on Cisco 4500? I'm interested
> both in MST and PVST+.
>
> Is it a set "STP instances" like normal switches, or virtual/logical
> ports like 6500? And what are the numbers? Any funky commands to
> check?
>
> I searched the archives but couldn't find anything on 4500s.
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