参考答案：Current configuration:
!
version AA.B
no service udp-small-servers
no service tcp-small-servers
!
hostname routerA
!
enable secret E ＄A ＄XN0H ＄TtrHnfLoPI,BRgZhcBzkk/
enable password cisco
!
!
ip subnet-zero
!
controller EA 0
framing NO-CRCA //帧类型为 no-crcD
channel-group 0 timeslots A //建立逻辑通道组0与时隙A的映射
channel-group A timeslots B //建立逻辑通道组A与时隙B的映射
channel-group B timeslots C //建立逻辑通道组B与时隙C的映射
!
interface Ethernet0
ip address ACC.AAH.D0.A BEE.BEE.0.0
media-type A0BaseT
!
interface EthernetA
no ip address
shutdown
!
interface Serial0:0 //逻辑接口Serial0:0
ip address B0B.AAI.IF.A BEE.BEE.BEE.BEB
encapsulation hdlc
no ip mroute-cache
!
interface Serial0:A
ip address B0B.AAI.IF.E BEE.BEE.BEE.BEB
encapsulation hdlc
no ip mroute-cache
!
interface Serial0:B
ip address B0B.AAI.IF.I BEE.BEE.BEE.BEB
encapsulation hdlc
no ip mroute-cache
!
no ip classless
ip route ACC.BA0.D0.0 BEE.BEE.BEE.0 Serial0:0
ip route ACC.BA0.DA.0 BEE.BEE.BEE.0 Serial0:A
ip route ACC.BA0.DB.0 BEE.BEE.BEE.0 Serial0:B
!
line con 0
line aux 0
line vty 0 D
password cicso
login
!
end