cisco2811的f0/0接口与ADSL(从一个光电MODEM出来RJ45口接入路由器，经过测试笔记本上ADSL拨号可以）相连，F0/0接口状态为UP，接口协议为Down，求高手分析下可能的原因。 vpdn enable ! vpdn-group office request-dialin protocol pppoe ! interface FastEthernet0/0 no ip address ip nat outside ip virtual-reassembly duplex auto speed auto pppoe enable group global pppoe-client dial-pool-number 1 !
interface Dialer1 mtu 1492 ip address negotiated ip nat outside ip virtual-reassembly encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication pap chap callin ppp chap hostname ******* ppp chap password 7 *********** ppp pap sent-username ********* password 7 ********** !
ip route 0.0.0.0 0.0.0.0 Dialer1 ! ip nat inside source list 100 interface Dialer1 overload
查看端口f0/0 #show interfaces fastEthernet 0/0 FastEthernet0/0 is up, line protocol is down Hardware is MV96340 Ethernet, address is 001f.9e16.4550 (bia 001f.9e16.4550) MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation ARPA, loopback not set Keepalive set (10 sec) Auto-duplex, Auto Speed, 100BaseTX/FX ARP type: ARPA, ARP Timeout 04:00:00 Last input never, output 00:00:05, output hang never Last clearing of "show interface" counters never 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 0 packets input, 0 bytes Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 watchdog 0 input packets with dribble condition detected 200 packets output, 12085 bytes, 0 underruns 0 output errors, 0 collisions, 1 interface resets 0 unknown protocol drops 0 babbles, 0 late collision, 0 deferred 0 lost carrier, 0 no carrier 0 output buffer failures, 0 output buffers swapped out
