请大侠们帮忙看下，pppoe拨号老是掉线

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# TL-WR742NSystem Log
# Time = 2006-01-018:05:53 358s
# H-Ver = WR742N 5.0 00000000 : S-Ver = 5.6.21 Build 130417 Rel.73893n
# L = 192.168.1.1 : M = 255.255.255.0
# W1 = PPPoE : W = 27.224.208.232 : M = 255.255.255.255 : G = 27.224.208.1
# Cnt = 8320, Free = 8171, Busy = 149
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0days, 00:00:04, LAN: mirror0 set ip c0a80101 mask ffffff00
0days, 00:00:05, System start ok.
0days, 00:00:05, SystemLog – Mail Settings have not been configured.
0days, 00:00:08, DHCPS: Send OFFER with ip 192.168.1.100
0days, 00:00:10, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:10, PPPOE: TX PADT.
0days, 00:00:10, try special dail type: 0
0days, 00:00:10, PPPOE: TX PADI.
0days, 00:00:10, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB3EC0
0days, 00:00:10, PPPOE: TX PADR.
0days, 00:00:10, PPPOE: RX from invalid server.
0days, 00:00:10, PPPOE: RX PADS.
0days, 00:00:10, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:10, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:10, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:10, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:11, PPP SM: retry.
0days, 00:00:11, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:11, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:11, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:11, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:11, PPPOE: RX PADT.
0days, 00:00:12, try special dail type: 1
0days, 00:00:12, HENAN CNC authentication.
0days, 00:00:12, PPPOE: TX PADI.
0days, 00:00:12, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB4004
0days, 00:00:12, PPPOE: TX PADR.
0days, 00:00:12, PPPOE: RX from invalid server.
0days, 00:00:12, PPPOE: RX PADS.
0days, 00:00:12, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:12, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:12, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:12, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:13, PPP SM: retry.
0days, 00:00:13, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:13, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:13, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:13, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:13, PPPOE: RX PADT.
0days, 00:00:14, try special dail type: 2
0days, 00:00:14, HUNAN Vnet authentication.
0days, 00:00:14, PPPOE: TX PADI.
0days, 00:00:14, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB4004
0days, 00:00:14, PPPOE: TX PADR.
0days, 00:00:14, PPPOE: RX from invalid server.
0days, 00:00:14, PPPOE: RX PADS.
0days, 00:00:14, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:14, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:14, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:14, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:15, PPP SM: retry.
0days, 00:00:15, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:15, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:15, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:15, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:15, PPPOE: RX PADT.
0days, 00:00:16, try special dail type: 3
0days, 00:00:16, NANCHANG NetKeeper2.5(V18) authentication. 0xA7723D39
0days, 00:00:16, ChangedName =
0`H5M* 4809352233282
0days, 00:00:16, PPPOE: TX PADI.
0days, 00:00:16, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB4004
0days, 00:00:16, PPPOE: TX PADR.
0days, 00:00:16, PPPOE: RX from invalid server.
0days, 00:00:16, PPPOE: RX PADS.
0days, 00:00:16, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:16, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:16, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:16, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:17, PPP SM: retry.
0days, 00:00:17, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:17, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:17, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:17, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:17, PPPOE: RX PADT.
0days, 00:00:18, try special dail type: 4
0days, 00:00:18, NANCHANG NetKeeper2.5(V8) authentication. 0xA772D979
0days, 00:00:18, PPPOE: TX PADI.
0days, 00:00:18, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB4004
0days, 00:00:18, PPPOE: TX PADR.
0days, 00:00:18, PPPOE: RX from invalid server.
0days, 00:00:18, PPPOE: RX PADS.
0days, 00:00:18, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:18, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:18, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:18, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:19, PPP SM: retry.
0days, 00:00:19, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:19, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:19, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:19, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:19, PPPOE: RX PADT.
0days, 00:00:20, try special dail type: 5
0days, 00:00:20, XIAN Vnet authentication.
0days, 00:00:21, modemMac = 78:A1:06E:80:03
0days, 00:00:22, PPPOE: TX PADI.
0days, 00:00:22, PPPOE SM: retry.
0days, 00:00:22, PPPOE: TX PADI.
0days, 00:00:22, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB3EC0
0days, 00:00:22, PPPOE: TX PADR.
0days, 00:00:22, PPPOE: RX from invalid server.
0days, 00:00:22, PPPOE: RX from invalid server.
0days, 00:00:22, PPPOE: RX PADS.
0days, 00:00:22, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:22, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:22, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:22, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:23, PPP SM: retry.
0days, 00:00:23, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:23, PPP PAP: RX AUTHENTICATION_NAK.
0days, 00:00:23, PPP LCP: TX TERMINATION_REQUEST.
0days, 00:00:23, PPP LCP: RX TERMINATION_ACK.
0days, 00:00:23, PPPOE: RX PADT.
0days, 00:00:24, try special dail type: 6
0days, 00:00:24, HUBEI Vnet authentication.
0days, 00:00:24, PPPOE: TX PADI.
0days, 00:00:24, PPPOE: RX PADO,AC-NAME=Quidway,AC-MAC=781DBACB4004
0days, 00:00:24, PPPOE: TX PADR.
0days, 00:00:24, PPPOE: RX from invalid server.
0days, 00:00:24, PPPOE: RX PADS.
0days, 00:00:24, PPP LCP: TX CONFIGURE_REQUEST.
0days, 00:00:24, PPP LCP: RX CONFIGURE_REQUEST.
0days, 00:00:24, PPP LCP: TX CONFIGURE_ACK.
0days, 00:00:24, PPP LCP: RX CONFIGURE_ACK.
0days, 00:00:25, PPP SM: retry.
0days, 00:00:25, PPP PAP: TX AUTHENTICATION_REQUEST.
0days, 00:00:25, PPP PAP: RX AUTHENTICATION_ACK.
0days, 00:00:25, PPP IPCP: TX CONFIGURE_REQUEST.
0days, 00:00:25, PPP IPCP: RX CONFIGURE_REQUEST.
0days, 00:00:25, PPP IPCP: TX CONFIGURE_ACK.
0days, 00:00:25, PPP IPCP: RX CONFIGURE_NAK.
0days, 00:00:25, PPP IPCP: TX CONFIGURE_REQUEST.
0days, 00:00:25, PPP IPCP: RX CONFIGURE_ACK.
0days, 00:00:25, PPP: ppp0 set localIp 1be0d0e8 dstIp 1be0d001 mtu 1480
0days, 00:02:35, DHCPS: Send OFFER with ip 192.168.1.101
0days, 00:02:50, DHCPS: Send OFFER with ip 192.168.1.102
0days, 00:03:14, DHCPS: Send OFFER with ip 192.168.1.106
0days, 00:03:46, DHCPS: Send OFFER with ip 192.168.1.103
0days, 00:04:29, SystemLog – Mail Settings have not been configured.
Exception:|2006-01-020:39:55|
td_id = 807D0A70
td_name = tNetTask
td_sp = 807D0440
td_pStackBase = 807D0A70
td_stackCurrent = 630
td_pc = 8006ce60
td_ra = 8006a44c
这是系统日志 请大家判断下是什么问题