linux + wan (frame relay)

[Mario Olimpio de Menezes <mario@curiango.ipen.br>]

Hi,

	I would like to know if Linux (Debian/GNU) can work with wan
protocols, especifically frame-relay? 
	That's, if I buy a wan card, can I route with Linux? Should I
expect some troubles? Some limitation? Can I "safely" substitute a Cisco
router with a linux+wan card?
	Any kind of info is welcome; better if it's quick! :-))	
	Thanks,

[]s
Mario O.de Menezes            "Many are the plans in a man's heart, but
    IPEN-CNEN/SP                 is the Lord's purpose that prevails"
http://curiango.ipen.br/~mario                 Prov. 19.21
                   http://www.revistalinux.com.br