%LINK-5-CHANGED: Interface Async9, changed state to standby mode
Router#ping 132.147.161.111
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 132.147.161.111, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/32/32 ms
Router#sh int s0
Serial0 is up, line protocol is up
Hardware is HD64570
Internet address is 200.1.1.1/24
Backup interface Async9, kickin load not set, kickout load not set failure delay 10 sec, secondary disable delay 10 sec
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive set (10 sec)
LCP Open
Open: IPCP, CDPCP
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1 (active/max active/threshold)
Reserved Conversations 0/0/64 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec 115 packets input, 5131 bytes, 0 no buffer Received
115 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
115 packets output, 5035 bytes, 0 underruns
0 output errors, 0 collisions, 14 interface resets
0 output buffer failures, 0 output buffers swapped out
13 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
Router#sh int
a9 Async9 is standby mode, line protocol is down
Hardware is Async Serial Internet address is 200.2.2.1/24
MTU 1500 bytes, BW 9 Kbit, DLY 100000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive not set
DTR is pulsed for 5 seconds on reset
LCP Closed
Closed: IPCP, CDPCP
Last input 00:01:42, output 00:01:42, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1 (active/max active/threshold)
Reserved Conversations 0/0/64 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
33 packets input, 2852 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
2 input errors, 2 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
82 packets output, 3019 bytes, 0 underruns
0 output errors, 0 collisions, 8 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Router#
（二）、ROUTERB (CALLER)
Router#sh run
Building configuration...
Current configuration:
!
version 11.3
no service password-encryption
!
hostname Router
!
enable secret 5 $1$ywCg$Hm9E3ga.xYAbzVTEvPpT3.
enable password cisco
! !
interface Ethernet0
ip address 132.147.161.111 255.255.255.0
no mop
enabled
!
interface Serial0
ip address 200.1.1.2 255.255.255.0
encapsulation ppp no ip mroute-cache
!
interface Serial1
no ip address shutdown
!
interface Async1
ip address 200.2.2.2 255.255.255.0 e
ncapsulation ppp
async mode dedicated
pulse-time 60
!
ip classless ip route 132.147.160.0 255.255.255.0 200.1.1.1
ip route 132.147.160.0 255.255.255.0 200.2.2.1 2
!
line con 0 line aux 0
flowcontrol hardware
line vty 0 4
password cisco
login
!
end
Router#sh line aux 0
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