Pre-Requisite:
Sybase Server: SYB_ASE
Sybase database: DB1
Replication Server: SYB_RS

Login to SYB_ASE and run below command

use DB1
go
sp_stop_rep_agent DB1
go
sp_config_rep_agent "DB1","disable"
go
sp_config_rep_agent "DB1","enable","SYB_RS","SYB_RS_ra","SYB_RS_ra_ps"
go
dbcc settrunc(ltm,ignore)
go

Login to Replication server and get RSSD detailsRead the rest