To begin : How to calculate the ASN 4 bytes we need to configure it ?
So : ASN-decimal = 197632.
197632 % 65536 = 3
And
197632 - (65536 * 3) = 1024
Ok. Now we can configure it on a Cisco router :
router bgp XXXX
nei 197.66.55.33 remote-as 3.1024
I let you go on the configuration as always it works.