Route limits can be disabled - this makes sense for protocol templates

	using <cf/show route filtered/. Note that this option does not

	work for the pipe protocol. Default: off.

	<tag>import limit <m/number/ [action warn | block | restart | disable]</tag>

	<tag>import limit [<m/number/ | off ] [action warn | block | restart | disable]</tag>

	Specify an import route limit (a maximum number of routes

	imported from the protocol) and optionally the action to be

	taken when the limit is hit. Warn action just prints warning

	protocol. Restart and disable actions shut the protocol down

	like appropriate commands. Disable is the default action if an

	action is not explicitly specified. Note that limits are reset

	during protocol reconfigure, reload or restart. Default: <cf/none/.

	during protocol reconfigure, reload or restart. Default: <cf/off/.

	<tag>receive limit <m/number/ [action warn | block | restart | disable]</tag>

	<tag>receive limit [<m/number/ | off ] [action warn | block | restart | disable]</tag>

	Specify an receive route limit (a maximum number of routes

	received from the protocol and remembered). It works almost

	identically to <cf>import limit</cf> option, the only

	receive limit is to protect routing tables from

	overflow. Import limit, on the contrary, counts accepted

	routes only and routes blocked by the limit are handled like

	filtered routes. Default: <cf/none/.

	filtered routes. Default: <cf/off/.

	<tag>export limit <m/number/ [action warn | block | restart | disable]</tag>

	<tag>export limit [ <m/number/ | off ] [action warn | block | restart | disable]</tag>

	Specify an export route limit, works similarly to

	the <cf>import limit</cf> option, but for the routes exported

	to the protocol. This option is experimental, there are some

	during protocol reload, exported routes counter ignores route

	blocking and block action also blocks route updates of already

	accepted routes -- and these details will probably change in

	the future. Default: <cf/none/.

	the future. Default: <cf/off/.

	<tag>description "<m/text/"</tag> This is an optional

	description of the protocol. It is displayed as a part of the

     l->action = $2;

     $$ = l;

   }

 | OFF { $$ = 0; }

 ;

rtable: