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# Create a user account for Router A. 
<RouterB> system-view 
[RouterB] local-user router-a  
[RouterB-luser-router-a] password simple router-a 
[RouterB-luser-router-a] service-type ppp 
[RouterB-luser-router-a] quit 
# Create a VT interface for the user and specify to use the NCP information of this interface for 
PPP negotiation. 
[RouterB] ppp mp user router-a bind virtual-template 1 
# Configure the VT interface. 
[RouterB] interface virtual-template 1 
[RouterB-Virtual-Template1] ip address 202.38.166.2 255.255.255.0 
[RouterB-Virtual-Template1] quit 
# Add interfaces Serial 2/0:1 and Serial 2/0/:2 to the MP channel. Take Serial 2/0:1 as an 
example. 
[RouterB] interface serial 2/0:1 
[RouterB-Serial2/0:1] ppp mp 
[RouterB-Serial2/0:1] ppp authentication-mode pap domain system 
[RouterB-Serial2/0:1] ppp pap local-user router-b password simple router-b 
[RouterB-Serial2/0:1] quit 
# Configure local authentication for the PPP users in the default ISP domain system. 
[RouterB] domain system 
[RouterB-isp-system] authentication ppp local 
3.  Configure Router C: 
# Create a user account for Router A. 
<RouterC> system-view 
[RouterC] local-user router-a 
[RouterC-luser-router-a] password simple router-a 
[RouterC-luser-router-a] service-type ppp 
[RouterC-luser-router-a] quit 
# Create a VT interface for the user and specify to use the NCP information of the interface for 
PPP negotiation. 
[RouterC] ppp mp user router-a bind virtual-template 1 
# Configure the VT interface. 
[RouterC] interface virtual-template 1 
[RouterC-Virtual-Template1] ip address 202.38.168.2 255.255.255.0 
[RouterC-Virtual-Template1] quit 
# Add interfaces Serial 2/0:1 and Serial 2/0:2 to the MP channel. Take Serial 2/0:1 as an 
example. 
[RouterC] interface serial 2/0:1 
[RouterC-Serial2/0:1] ppp mp 
[RouterC-Serial2/0:1] ppp authentication-mode pap domain system 
[RouterC-Serial2/0:1] ppp pap local-user router-c password simple router-c 
[RouterC-Serial2/0:1] quit 
# Configure local authentication for the PPP users in the default ISP domain system. . 
[RouterC] domain system 
[RouterC-isp-system] authentication ppp local