Here is a copy of the run configuration and the interface for both routers. (I have a back to back cable, the DCE end is connected to Lab_A. Both DCE and DTE are connected to serial 1. Thanks.
LAB_A#show int ser 1
Serial1 is up, line protocol is down
Hardware is HD64570
Internet address is 198.100.10.1/24
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 REQsent
Closed: IPCP, CDPCP
Last input never, 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 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
250 packets output, 4452 bytes, 0 underruns
0 output errors, 0 collisions, 174 interface resets
0 output buffer failures, 0 output buffers swapped out
228 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
LAB_B#show int ser 1
Serial1 is up, line protocol is down
Hardware is HD64570
Internet address is 169.100.10.2/16
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 ACKsent
Closed: IPCP, CDPCP
Last input 00:00:01, output 00:00:00, 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 0/2/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
781 packets input, 11886 bytes, 0 no buffer
Received 703 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
742 packets output, 50258 bytes, 0 underruns
0 output errors, 0 collisions, 207 interface resets
0 output buffer failures, 0 output buffers swapped out
419 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
LAB_A#show run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname LAB_A
!
!
ip subnet-zero
!
!
!
interface Ethernet0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0
ip address 169.100.10.1 255.255.0.0
no ip directed-broadcast
encapsulation ppp
no ip mroute-cache
no fair-queue
clockrate 56000
!
interface Serial1
ip address 198.100.10.1 255.255.255.0
no ip directed-broadcast
encapsulation ppp
clockrate 56000
!
router rip
network 169.100.0.0
network 198.100.10.0
!
ip classless
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
end
LAB_B#show run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname LAB_B
!
!
ip subnet-zero
!
!
!
interface Ethernet0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
no fair-queue
!
interface Serial1
ip address 169.100.10.2 255.255.0.0
no ip directed-broadcast
encapsulation ppp
!
router rip
network 169.100.0.0
network 198.100.10.0
!
ip classless
!
!
line con 0
transport input none
line aux 0
line vty 0 4
!
end
