未分类题

以下是使用E1线路实现多个64Kbit/s专线连接。
当链路为T1时,channel-group编号为0~23,Timeslot范围为1~24;当链路为E1时, channel-group编号为0~30,Timeslot范围为1~31。
路由器具体设置如下:
Current configuration:
version 11.2
no service udp-small-servers
no service tcp-small-servers
!
hostname router1
!
enable secret 5 $ 1 $ XN08 $ Ttr8nfLoP9.2RgZhcBzkk/
enable password cisco
!
!
ip subnet-zero
controller E1 0
framing NO-CRC4
channel-group 0 timeslots 1
channel-group 1 timeslots 2
channel-group 2 timeslots 3
!
interface Ethernet0
ip address 133.118.40.1 255.255.0.0
media-type 10BaseT
interface Ethernet1
no ip address
shutdown
interface Serial0:0
ip address 202.119.96.1 255.255.255.252
encapsulation hdlc
no ip mroute-Cache
interface Serial0:1
ip address 202.119.96.5 255.255.255.252
encapsulation hdlc
no ip mroute-Cache
!
interface Serial0:2
ip address 202.119.96.9 255.255.255.252
encapsulation hdlc
no ip mroute-Cache
no ip classless
ip route 133.210.40.0 255.255.255.0 Serial0:0
ip route 133.210.41.0 255.255.255.0 Serial0:1
ip route 133.210.42.0 255.255.255.0 Serial0:2
line con 0
line aux 0
line vty 0 4
password cicso
Iogin
!
end
E1和CE1的主要区别是什么?

A.2
B.2RgZhcBzkk/
C.118.40.1
D.255.0.0
E.119.96.1
F.255.255.252
G.119.96.5
H.255.255.252
I.119.96.9
J.255.255.252
K.210.40.0
L.255.255.0
M.210.41.0
N.255.255.0
O.210.42.0
P.255.255.0

【参考答案】

CEl的传输线路的带宽是2048 Kbit/s它和E1的区别主要在于:E1不能划分时隙CEl能划分时隙。CEl的每个时隙......

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