问题描述：用“请您尝试使用特殊接法：将入户网线连接在路由器的LAN口，电脑也连接路由器的LAN口，用一条网线将路由器的LAN口和WAN口连接起来，请确保对应的指示灯是亮的；然后您将路由器恢复出厂设置，登录到路由器的管理界面，在“网络参数”--“WAN口设置”页面，重新设置PPPOE拨号，之后观察拨号的情况。”中的方法当交换机可以拨号上网，再加一根网线的情况也是无响应，日志： #################################################################### # TL-WR2041N 系统日志 # Time = 2013-01-01 0:11:56 717s # H-Ver = WR2041N v2 00000000 : S-Ver = 3.15.34 Build 130823 Rel.57853n # L = 192.168.1.1 : M = 255.255.255.0 # W1 = PPPoE : W = 0.0.0.0 : M = 0.0.0.0 : G = 0.0.0.0 #################################################################### 1st day 00:00:04 PPP INFO System started 1st day 00:00:08 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:08 DHCP NOTICE DHCP server started 1st day 00:00:08 安全 INFO PPTP Passthrough enabled 1st day 00:00:08 安全 INFO L2TP Passthrough enabled 1st day 00:00:08 安全 INFO IPSEC Passthrough enabled 1st day 00:00:08 安全 INFO FTP ALG enabled 1st day 00:00:08 安全 INFO TFTP ALG enabled 1st day 00:00:08 安全 INFO H323 ALG enabled 1st day 00:00:08 安全 INFO RTSP ALG enabled 1st day 00:00:10 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:10 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:11 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:12 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:12 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:12 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:13 DHCP INFO DHCPS:Recv REQUEST from C8:60:00:16:B1:C1 1st day 00:00:13 DHCP INFO DHCPS:Send NAK 1st day 00:00:14 DHCP INFO DHCPS:Recv DISCOVER from C8:60:00:16:B1:C1 1st day 00:00:15 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.102 1st day 00:00:15 DHCP INFO DHCPS:Recv REQUEST from C8:60:00:16:B1:C1 1st day 00:00:15 DHCP INFO DHCPS:Send ACK to 192.168.1.102 1st day 00:00:16 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 1 1st day 00:00:16 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:16 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:18 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 1 1st day 00:00:18 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:18 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:20 DHCP INFO DHCPC DHCP Service unavailable, recv no OFFER 1st day 00:00:20 安全 INFO Wlan weak security warning enables 1st day 00:00:22 DHCP INFO DHCPC perform a DHCP renew 1st day 00:00:22 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:22 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:22 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:24 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:24 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:24 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:26 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 0 1st day 00:00:26 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:26 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:30 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 1 1st day 00:00:30 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:30 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:32 DHCP INFO DHCPC Send DISCOVER with request ip 0 and unicast flag 1 1st day 00:00:32 DHCP INFO DHCPS:Recv DISCOVER from C0:61:18:2F:77:3D 1st day 00:00:32 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.101 1st day 00:00:34 DHCP INFO DHCPC DHCP Service unavailable, recv no OFFER 1st day 00:00:57 DHCP INFO DHCPC Entering released state 1st day 00:00:58 PPP INFO WAN type is switched to PPPoE 1st day 00:01:00 PPP WARNING PPPoE disconnected 1st day 00:01:02 DHCP INFO DHCPS:Recv DISCOVER from 30:39:26:9D:E0:0D 1st day 00:01:03 DHCP INFO DHCPS:Send OFFER with ip 192.168.1.103 1st day 00:01:03 DHCP INFO DHCPS:Recv REQUEST from 30:39:26:9D:E0:0D 1st day 00:01:03 DHCP INFO DHCPS:Send ACK to 192.168.1.103 1st day 00:01:04 PPP NOTICE Standard authentication. 1st day 00:01:04 PPP INFO sent [PADI Host-Uniq(0x000001f2)] 1st day 00:01:09 PPP INFO sent [PADI Host-Uniq(0x000001f2)] 1st day 00:01:19 PPP INFO sent [PADI Host-Uniq(0x000001f2)] 1st day 00:01:35 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:01:39 PPP ERROR Timeout waiting for PADO packets 1st day 00:01:40 PPP NOTICE Standard authentication. 1st day 00:01:40 PPP INFO sent [PADI Host-Uniq(0x000001fd)] 1st day 00:01:45 PPP INFO sent [PADI Host-Uniq(0x000001fd)] 1st day 00:01:55 PPP INFO sent [PADI Host-Uniq(0x000001fd)] 1st day 00:02:06 DHCP INFO DHCPS:Recv REQUEST from 30:9B:AD:BE:65:27 1st day 00:02:07 DHCP INFO DHCPS:Send ACK to 192.168.1.105 1st day 00:02:12 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:02:15 PPP ERROR Timeout waiting for PADO packets 1st day 00:02:16 PPP NOTICE Standard authentication. 1st day 00:02:16 PPP INFO sent [PADI Host-Uniq(0x00000204)] 1st day 00:02:21 PPP INFO sent [PADI Host-Uniq(0x00000204)] 1st day 00:02:31 PPP INFO sent [PADI Host-Uniq(0x00000204)] 1st day 00:02:48 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:02:51 PPP ERROR Timeout waiting for PADO packets 1st day 00:02:52 PPP NOTICE Standard authentication. 1st day 00:02:52 PPP INFO sent [PADI Host-Uniq(0x0000020b)] 1st day 00:02:57 PPP INFO sent [PADI Host-Uniq(0x0000020b)] 1st day 00:03:03 PPP NOTICE WAN MAC Address is cloned toC8-60-00-16-B1-C1 1st day 00:03:04 PPP NOTICE HENAN authentication. 1st day 00:03:04 PPP INFO sent [PADI Host-Uniq(0x00000214)] 1st day 00:03:04 DHCP INFO DHCPC Entering released state 1st day 00:03:04 DHCP INFO DHCPC: mac clone, re-read WAN interface information 1st day 00:03:05 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:03:06 PPP WARNING PPPoE disconnected 1st day 00:03:08 PPP NOTICE Standard authentication. 1st day 00:03:08 PPP INFO sent [PADI Host-Uniq(0x0000021d)] 1st day 00:03:13 PPP INFO sent [PADI Host-Uniq(0x0000021d)] 1st day 00:03:23 PPP INFO sent [PADI Host-Uniq(0x0000021d)] 1st day 00:03:40 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:03:43 PPP ERROR Timeout waiting for PADO packets 1st day 00:03:44 PPP NOTICE Standard authentication. 1st day 00:03:44 PPP INFO sent [PADI Host-Uniq(0x00000224)] 1st day 00:03:49 PPP INFO sent [PADI Host-Uniq(0x00000224)] 1st day 00:03:59 PPP INFO sent [PADI Host-Uniq(0x00000224)] 1st day 00:04:16 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:04:19 PPP ERROR Timeout waiting for PADO packets 1st day 00:04:20 PPP NOTICE Standard authentication. 1st day 00:04:20 PPP INFO sent [PADI Host-Uniq(0x0000022b)] 1st day 00:04:25 PPP INFO sent [PADI Host-Uniq(0x0000022b)] 1st day 00:04:35 PPP INFO sent [PADI Host-Uniq(0x0000022b)] 1st day 00:04:52 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:04:55 PPP ERROR Timeout waiting for PADO packets 1st day 00:04:56 PPP NOTICE Standard authentication. 1st day 00:04:56 PPP INFO sent [PADI Host-Uniq(0x00000248)] 1st day 00:05:01 PPP INFO sent [PADI Host-Uniq(0x00000248)] 1st day 00:05:11 PPP INFO sent [PADI Host-Uniq(0x00000248)] 1st day 00:05:28 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:05:31 PPP ERROR Timeout waiting for PADO packets 1st day 00:05:32 PPP NOTICE Standard authentication. 1st day 00:05:32 PPP INFO sent [PADI Host-Uniq(0x0000024f)] 1st day 00:05:37 PPP INFO sent [PADI Host-Uniq(0x0000024f)] 1st day 00:05:47 PPP INFO sent [PADI Host-Uniq(0x0000024f)] 1st day 00:06:04 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:06:07 PPP ERROR Timeout waiting for PADO packets 1st day 00:06:08 PPP NOTICE Standard authentication. 1st day 00:06:08 PPP INFO sent [PADI Host-Uniq(0x00000256)] 1st day 00:06:13 PPP INFO sent [PADI Host-Uniq(0x00000256)] 1st day 00:06:23 PPP INFO sent [PADI Host-Uniq(0x00000256)] 1st day 00:06:28 PPP NOTICE PPPoE start connecting... 1st day 00:06:40 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:06:43 PPP ERROR Timeout waiting for PADO packets 1st day 00:06:44 PPP NOTICE Standard authentication. 1st day 00:06:44 PPP INFO sent [PADI Host-Uniq(0x00000269)] 1st day 00:06:49 PPP INFO sent [PADI Host-Uniq(0x00000269)] 1st day 00:06:59 PPP INFO sent [PADI Host-Uniq(0x00000269)] 1st day 00:07:16 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:07:19 PPP ERROR Timeout waiting for PADO packets 1st day 00:07:20 PPP NOTICE Standard authentication. 1st day 00:07:20 PPP INFO sent [PADI Host-Uniq(0x00000270)] 1st day 00:07:26 PPP INFO sent [PADI Host-Uniq(0x00000270)] 1st day 00:07:36 PPP INFO sent [PADI Host-Uniq(0x00000270)] 1st day 00:07:53 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:07:56 PPP ERROR Timeout waiting for PADO packets 1st day 00:07:57 PPP NOTICE Standard authentication. 1st day 00:07:57 PPP INFO sent [PADI Host-Uniq(0x00000277)] 1st day 00:08:02 PPP INFO sent [PADI Host-Uniq(0x00000277)] 1st day 00:08:12 PPP INFO sent [PADI Host-Uniq(0x00000277)] 1st day 00:08:29 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:08:32 PPP ERROR Timeout waiting for PADO packets 1st day 00:08:33 PPP NOTICE Standard authentication. 1st day 00:08:33 PPP INFO sent [PADI Host-Uniq(0x0000027e)] 1st day 00:08:38 PPP INFO sent [PADI Host-Uniq(0x0000027e)] 1st day 00:08:48 PPP INFO sent [PADI Host-Uniq(0x0000027e)] 1st day 00:09:05 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:09:08 PPP ERROR Timeout waiting for PADO packets 1st day 00:09:09 PPP NOTICE Standard authentication. 1st day 00:09:09 PPP INFO sent [PADI Host-Uniq(0x00000285)] 1st day 00:09:14 PPP INFO sent [PADI Host-Uniq(0x00000285)] 1st day 00:09:24 PPP INFO sent [PADI Host-Uniq(0x00000285)] 1st day 00:09:41 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:09:44 PPP ERROR Timeout waiting for PADO packets 1st day 00:09:45 PPP NOTICE Standard authentication. 1st day 00:09:45 PPP INFO sent [PADI Host-Uniq(0x0000028c)] 1st day 00:09:50 PPP INFO sent [PADI Host-Uniq(0x0000028c)] 1st day 00:10:00 PPP INFO sent [PADI Host-Uniq(0x0000028c)] 1st day 00:10:17 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:10:20 PPP ERROR Timeout waiting for PADO packets 1st day 00:10:21 PPP NOTICE Standard authentication. 1st day 00:10:21 PPP INFO sent [PADI Host-Uniq(0x000002a1)] 1st day 00:10:26 PPP INFO sent [PADI Host-Uniq(0x000002a1)] 1st day 00:10:36 PPP INFO sent [PADI Host-Uniq(0x000002a1)] 1st day 00:10:40 PPP NOTICE PPPoE start connecting... 1st day 00:10:53 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:10:56 PPP ERROR Timeout waiting for PADO packets 1st day 00:10:57 PPP NOTICE Standard authentication. 1st day 00:10:57 PPP INFO sent [PADI Host-Uniq(0x000002b4)] 1st day 00:11:02 PPP INFO sent [PADI Host-Uniq(0x000002b4)] 1st day 00:11:12 PPP INFO sent [PADI Host-Uniq(0x000002b4)] 1st day 00:11:29 PPP NOTICE select mode no pppoe server or user stop. 1st day 00:11:32 PPP ERROR Timeout waiting for PADO packets 1st day 00:11:33 PPP NOTICE Standard authentication. 1st day 00:11:33 PPP INFO sent [PADI Host-Uniq(0x000002bf)] 1st day 00:11:38 PPP INFO sent [PADI Host-Uniq(0x000002bf)] 1st day 00:11:48 PPP INFO sent [PADI Host-Uniq(0x000002bf)]