/SLASHPLAY
How to limit classes on a TF2 server
Type tf_classlimit 2 in the server console so no more than two players per team can pick the same class. 0 means no limit.
tf_classlimit
Limits how many players can play each class per team on public servers. 0 means no limit.
tf_classlimit <limit> Examples
tf_classlimit 2 At most two of each class per team.
Arguments
limitRequired- Players per class per team. 0 disables the limit.
What it does
Applies one limit to every class, for example 2 means no more than two Snipers or two Spies per team. It is a simple way to stop class stacking. In tournament mode the per-class tf_tournament_classlimit_* settings are used instead.
The game's own description: Limit on how many players can be any class (i.e. tf_class_limit 2 would limit 2 players per class).
Run it on your server
On a SLASHPLAY server, type it in the Console tab of the server page; the reply shows right under it. A value set there lasts until the server restarts. To keep it, add the line to tf/cfg/server.cfg. New to this? Start a TF2 server first.
Your own
TF2 server.
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