ISP_China_unicom:
interface Serial3/0/1
link-protocol ppp
ppp authentication-mode chap
ppp chap user isp_china_teltecom
ppp chap password cipher P@ss-1234
local-user isp_china_unicom password cipher P@ss-1234
local-user isp_china_unicom service-type ppp
ISP_Chaina_TElecom:
interface Serial1/0/1
link-protocol ppp
ppp authentication-mode chap
ppp chap user isp_china_unicom
ppp chap password cipher P@ss-1234
local-user isp_china_teltecom password cipher P@ss-1234
local-user isp_china_teltecom service-type ppp
