3com 3031 Instruccion De Instalación

[3Com]local-user pad1 service-type pad

b Select LINE

[3Com]user-interface vty 0 4

c Configure authentication mode

[3Com-ui-vty0-4]authentication-mode local

d Enable x25 switching

[3Com]x25 switching

e Configure local x25 switching

[3Com]x25 switch svc 2 interface serial 0/0/0

Select interface.

[3Com]interface serial 0/0/0

g Set the link layer protocol of the interface as X.25, and specify it to work in DTE 

mode.

[3Com-Serial0/0/0]link-protocol x25 dte

h Specify X.121 address of this interface.

[3Com-Serial0/0/0]x25 x121-address 1

2 Configure RouterB:

a Add PAD user

[3Com]local-user pad2 password simple pad2

[3Com]local-user pad2 service-type pad

b Select LINE

[3Com]user-interface vty 0 4

c Configure authentication mode

[3Com-ui-vty0-4]authentication-mode local

d Enable x25 switching

[3Com]x25 switching

e Configure local x25 switching

[3Com]x25 switch svc 1 interface serial 1/0/0

Select interface.

[3Com]interface serial 1/0/0

g Set the link layer protocol of the interface as X.25, and specify it to work in 

DCE mode.

[3Com-Serial1/0/0]link-protocol x25 dce

h Specify X.121 address of this interface.

[3Com-Serial1/0/0]x25 x121-address 2

Fault 1: the link layer protocol of two connected sides is LAPB (or X.25), which is 
always disconnected.