Помогите пожалуйста обрыв соеденения на модеме dlink 2650NRU C1 индикатор дсл горит а интернет красная лампочка
Записи журнала на момент обрыва
Jan 1 00:00:12 (none) syslog.emerg BCM96345 started: BusyBox v1.00 (2011.04.07-13:25+0000) 98
Jan 1 00:00:12 (none) user.crit kernel: eth0 Link UP 100 mbps full duplex 80
Jan 1 00:00:20 (none) user.crit kernel: Line 0: xDSL G.994 training 74
Jan 1 00:00:30 (none) user.crit kernel: Line 0: ADSL G.992 started 73
Jan 1 00:00:35 (none) user.crit kernel: Line 0: ADSL G.992 channel analysis 82
Jan 1 00:00:39 (none) user.crit kernel: Line 0: ADSL G.992 message exchange 82
Jan 1 00:00:39 (none) user.crit kernel: Line 0: ADSL link up, Bearer 0, us=939, ds=5007 94
Jan 1 00:00:39 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:00:40 (none) daemon.err syslog: Unexpected packet: Ether addr: 00:90:1a:42:15:27 (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002c (PADO) PPPoE tag: type=0102 length=0008 (AC Name) data (UTF-8): KV-JE-R2 PPPoE tag: type=0103 length=0004 (Host Uniq) data 303
Jan 1 00:00:40 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:00:40 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:00:40 (none) daemon.err syslog: User name and password authentication failed. Restarting in 15 secs... 119
Jan 1 00:00:58 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:00:58 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:00:58 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:00:59 (none) daemon.err syslog: User name and password authentication failed. Restarting in 15 secs... 119
Jan 1 00:01:17 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:01:17 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:01:17 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:01:18 (none) daemon.err syslog: User name and password authentication failed. Restarting in 15 secs... 119
Jan 1 00:01:36 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:01:36 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:01:37 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:01:37 (none) daemon.err syslog: User name and password authentication failed. Restarting in 15 secs... 119
Jan 1 00:01:55 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:01:55 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:01:56 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:01:57 (none) daemon.crit syslog: Received valid IP address from server. Connection UP. 104

Что делать?

Судя по представленным логам соединение в итоге установилось. ( После рекконекта dsl для повторной авторизации понадобилась минута)

Так это происходит 10 а то и больше раз в час невозможно работать

По поводу нестабильности dsl-соединения - обратитесь к провайдеру.
Установите также опцию SRA в разделе Дополнительно-- ADSL. ( Адаптация скорости к изменениям характеристик линии).