R1 和 R2 是同一个网络。但是，当您向 ICMP Ping 输出“超时”错误发送检查时，
show interface Serial0/0/0
命令产生以下输出：
Serial0/0/0 is up, line protocol is up (looped)
Hardware is GT96K Serial
Internet address is 210.220.61.2/30
MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:07, output 00:00:07, output hang never
Last clearing of "show interface" counters 01:11:55
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
675 packets input, 48741 bytes, 0 no buffer
Received 335 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
675 packets output, 48741 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
3 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
我该如何解决这种现象？
- - 额外的 - -
sh diag
命令产生以下输出：
WIC Slot 0:
Serial 2T (12in1)
Hardware revision 1.0 Board revision B0
Serial number 36966334 Part number 800-03181-03
Version Identifier V01 FRU Part Number WIC-2T
Test history 0x0 RMA number 00-00-00
Connector type PCI
EEPROM format version 1
EEPROM contents (hex):
0x20: 01 12 01 00 02 34 0F BE 50 0C 6D 03 00 00 00 00
0x30: 58 00 00 00 09 09 06 00 FF FF FF FF FF FF FF FF
>(config)# card ?
% Unrecognized command
(config)# controller ?
% Unrecognized command
该sh run命令产生以下输出：
Building configuration...
Current configuration : 1095 bytes
! No configuration change since last restart
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ISP-R
!
boot-start-marker
boot-end-marker
!
no aaa new-model
!
dot11 syslog
ip source-route
!
no ip cef
!
no ipv6 cef
!
multilink bundle-name authenticated
!
!
voice-card 0
!
crypto pki token default removal timeout 0
!
license udi pid CISCO2811 sn FHK1109F3K3
!
redundancy
!
!
interface FastEthernet0/0
ip address 210.220.61.10 255.255.255.252
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 195.35.37.254 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0/0
ip address 210.220.61.2 255.255.255.252
no fair-queue
!
interface Serial0/0/1
ip address 210.220.61.6 255.255.255.252
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
control-plane
!
!
!
!
mgcp profile default
!
!
!
!
!
!
line con 0
speed 115200
line aux 0
line vty 0 4
login
transport input all
!
scheduler allocate 20000 1000
end