[c-nsp] Maximum spannig tree instances

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> This supportwiki
> article<http://supportwiki.cisco.com/ViewWiki/index.php/The_%22PM-SP-4-LIMITS:%22_or_%22PM-SP-STDBY-4-LIMITS:%22_error_message_is_received_in_Catalyst_switches_that_run_Cisco_IOS_Software>could
> be what you're looking for. I confirm the 1800 instances/slot limit.

...and across the globe, people are reading that wonderful
'migrating to MST' Cisco guide  8-)

alan