Здравствуйте
у меня частые проблемы со связью, модем DSL-2500U. иногда бывает полдня работает ок, иногда каждые 5 минут разрывает.
телефонисты говорят что линия в хорошем состоянии.
иногда инет не работает, хотя модем подключился и на нем светится Internet.

Есть подозрение, что во всем виноват модем


ADSL Statistics


Mode: G.DMT
Type: Interleave
Line Coding: Trellis Off
Status: No Defect
Link Power State: L0

Downstream Upstream
SNR Margin (dB): 28.2 7.0
Attenuation (dB): 31.0 19.0
Output Power (dBm): 12.4 12.3
Attainable Rate (Kbps): 6592 724
Rate (Kbps): 640 640
K (number of bytes in DMT frame): 21 21
R (number of check bytes in RS code word): 8 8
S (RS code word size in DMT frame): 8 8
D (interleaver depth): 2 2
Delay (msec): 4 4

Super Frames: 46078 46076
Super Frame Errors: 0 189
RS Words: 391664 391646
RS Correctable Errors: 0 100
RS Uncorrectable Errors: 0 N/A

HEC Errors: 0 137
OCD Errors: 0 130
LCD Errors: 0 26
Total Cells: 1182429 0
Data Cells: 66218 0
Bit Errors: 0 0

Total ES: 1 0
Total SES: 1 0
Total UAS: 75 0

И у меня такая же проблема.

у всех устройств серии U на новых прошивках такая проблема.

_________________
DSL-2640U (3H00)

Заметил, что в режиме бриджа вместо разрыва связи модем пробует около 30 сек пересинхронизироваться (мигает DSL) после чего инет снова работает. Айпишка при этом не менятся, то есть сессия остается та же.

Переключил назад в режим роутера, с вечера до 10 утра работало без глюков, а сейчас снова началось.

мда.....dlink начал падать лицом в грязь, кстати можно вручную изменить mac

Не знаю, в тему или нет, но попробовал прошить на 3H00,постоянно моргает DSL ,вернул обратно 3B00 -работает. Снова 3H00-не работает, и так 2 раза.Линия старенькая, дохлая, но оператор говорит, что чистая. javascript:emoticon(':roll:')По-моему есть какие-то спец настройки, но я не знаю, в итоге остался на 3B00, хотя перед этим обновлял с заводской 0Z00 -всё нормаль. javascript:emoticon(':?:')

Поменял на 2500U/BRU/D, ничего не изменилось
Что может значить user warn syslog: dns query failed ? Это происходит когда зависает сессия - то есть модем подключился, получил айпишку, но ничего не работает, модем даже шлюз не в состоянии пропинговать



System Log

Date/Time Facility Severity Message
Jul 24 13:03:22 user debug syslog: echo > /var/hosts
Jul 24 13:03:22 user debug syslog: dproxy &
Jul 24 13:03:25 user warn syslog: dns query failed
Jul 24 13:03:27 user warn syslog: dns query failed
Jul 24 13:03:29 user warn syslog: dns query failed
Jul 24 13:03:31 user warn syslog: dns query failed
Jul 24 13:03:33 user warn syslog: dns query failed
Jul 24 13:03:34 user crit kernel: ADSL link down
Jul 24 13:03:35 user debug syslog: kill -9 2598
Jul 24 13:03:35 user debug syslog: echo > /var/hosts
Jul 24 13:03:35 user crit kernel: ADSL G.994 training
Jul 24 13:03:35 daemon notice pppd[251]: Terminating connection due to link down.
Jul 24 13:03:36 daemon info pppd[251]: Connect time 0.4 minutes.
Jul 24 13:03:36 daemon info pppd[251]: Sent 1421 bytes, received 626 bytes.
Jul 24 13:03:37 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:03:37 user crit kernel: ADSL G.992 started
Jul 24 13:03:40 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:03:44 daemon notice pppd[251]: Connection terminated....
Jul 24 13:03:45 user crit kernel: ADSL link down
Jul 24 13:03:46 user crit kernel: ADSL G.994 training
Jul 24 13:03:48 user crit kernel: ADSL G.992 started
Jul 24 13:03:51 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:03:55 user crit kernel: ADSL G.992 message exchange
Jul 24 13:03:55 user crit kernel: ADSL link up, interleaved, us=640, ds=640
Jul 24 13:03:57 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jul 24 13:03:58 daemon info pppd[251]: Sent PADT
Jul 24 13:03:59 daemon info pppd[251]: PPP session is 12143
Jul 24 13:03:59 daemon info pppd[251]: Using interface ppp0_0_33_1
Jul 24 13:03:59 daemon notice pppd[251]: Connect: ppp_0_0_33_1 <--> nas_0_0_33
Jul 24 13:03:59 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:04:02 daemon notice pppd[251]: peer from calling number 00:0E:0C:C4:81:FF authorized
Jul 24 13:04:03 daemon notice pppd[251]: local IP address 194.44.190.132
Jul 24 13:04:03 daemon notice pppd[251]: remote IP address 192.168.192.168
Jul 24 13:04:03 daemon notice pppd[251]: primary DNS address 194.44.214.37
Jul 24 13:04:03 daemon notice pppd[251]: secondary DNS address 194.44.214.40
Jul 24 13:04:16 user debug syslog: route add default gw 192.168.192.168 2>/dev/null
Jul 24 13:04:16 user debug syslog: iptables -A FORWARD -o ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:04:16 user debug syslog: iptables -A FORWARD -i ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:04:17 user debug syslog: echo > /proc/net/ip_conntrack
Jul 24 13:04:18 user debug syslog: echo "1000" > /proc/sys/net/ipv4/ip_conntrack_max
Jul 24 13:04:18 user debug syslog: iptables -t nat -D PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107 2>/dev/null
Jul 24 13:04:18 user debug syslog: iptables -t nat -D POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE 2>/dev/null
Jul 24 13:04:18 user debug syslog: iptables -t nat -A POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE
Jul 24 13:04:18 user debug syslog: echo > /var/hosts
Jul 24 13:04:19 user debug syslog: dproxy &
Jul 24 13:04:22 user warn syslog: dns query failed
Jul 24 13:04:24 user warn syslog: dns query failed
Jul 24 13:04:26 user warn syslog: dns query failed
Jul 24 13:04:29 user warn syslog: dns query failed
Jul 24 13:04:31 user warn syslog: dns query failed
Jul 24 13:04:33 user warn syslog: dns query failed
Jul 24 13:05:08 user warn syslog: dns query failed
Jul 24 13:05:10 user warn syslog: dns query failed
Jul 24 13:05:12 user warn syslog: dns query failed
Jul 24 13:05:14 user warn syslog: dns query failed
Jul 24 13:05:16 user warn syslog: dns query failed
Jul 24 13:05:18 user warn syslog: dns query failed
Jul 24 13:05:55 user warn syslog: dns query failed
Jul 24 13:05:57 user warn syslog: dns query failed
Jul 24 13:05:59 user warn syslog: dns query failed
Jul 24 13:06:01 user warn syslog: dns query failed
Jul 24 13:06:03 user warn syslog: dns query failed
Jul 24 13:06:05 user warn syslog: dns query failed
Jul 24 13:06:38 user warn syslog: dns query failed
Jul 24 13:06:40 user warn syslog: dns query failed
Jul 24 13:06:42 user warn syslog: dns query failed
Jul 24 13:06:44 user warn syslog: dns query failed
Jul 24 13:06:46 user warn syslog: dns query failed
Jul 24 13:06:48 user warn syslog: dns query failed
Jul 24 13:07:20 user warn syslog: dns query failed
Jul 24 13:07:22 user warn syslog: dns query failed
Jul 24 13:07:24 user warn syslog: dns query failed
Jul 24 13:07:26 user warn syslog: dns query failed
Jul 24 13:07:28 user warn syslog: dns query failed
Jul 24 13:07:30 user warn syslog: dns query failed
Jul 24 13:08:08 user warn syslog: dns query failed
Jul 24 13:08:10 user warn syslog: dns query failed
Jul 24 13:08:12 user warn syslog: dns query failed
Jul 24 13:08:14 user warn syslog: dns query failed
Jul 24 13:08:16 user warn syslog: dns query failed
Jul 24 13:08:18 user warn syslog: dns query failed
Jul 24 13:08:52 user warn syslog: dns query failed
Jul 24 13:08:54 user warn syslog: dns query failed
Jul 24 13:08:56 user warn syslog: dns query failed
Jul 24 13:08:58 user warn syslog: dns query failed
Jul 24 13:09:00 user warn syslog: dns query failed
Jul 24 13:09:02 user warn syslog: dns query failed
Jul 24 13:09:36 user warn syslog: dns query failed
Jul 24 13:09:38 user warn syslog: dns query failed
Jul 24 13:09:40 user warn syslog: dns query failed
Jul 24 13:09:42 user warn syslog: dns query failed
Jul 24 13:09:44 user warn syslog: dns query failed
Jul 24 13:09:46 user warn syslog: dns query failed
Jul 24 13:10:18 user warn syslog: dns query failed
Jul 24 13:10:20 user warn syslog: dns query failed
Jul 24 13:10:22 user warn syslog: dns query failed
Jul 24 13:10:24 user warn syslog: dns query failed
Jul 24 13:10:26 user warn syslog: dns query failed
Jul 24 13:10:28 user warn syslog: dns query failed
Jul 24 13:11:05 user warn syslog: dns query failed
Jul 24 13:11:07 user warn syslog: dns query failed
Jul 24 13:11:09 user warn syslog: dns query failed
Jul 24 13:11:11 user warn syslog: dns query failed
Jul 24 13:11:13 user warn syslog: dns query failed
Jul 24 13:11:15 user warn syslog: dns query failed
Jul 24 13:11:40 user crit kernel: ADSL link down
Jul 24 13:11:44 user debug syslog: kill -9 3038
Jul 24 13:11:45 user debug syslog: echo > /var/hosts
Jul 24 13:11:45 daemon notice pppd[251]: Terminating connection due to link down.
Jul 24 13:11:45 daemon info pppd[251]: Connect time 7.7 minutes.
Jul 24 13:11:45 daemon info pppd[251]: Sent 13140 bytes, received 0 bytes.
Jul 24 13:11:46 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:11:53 daemon notice pppd[251]: Connection terminated....
Jul 24 13:12:56 user crit kernel: ADSL G.994 training
Jul 24 13:12:58 user crit kernel: ADSL G.992 started
Jul 24 13:13:01 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:13:05 user crit kernel: ADSL G.992 message exchange
Jul 24 13:13:06 user crit kernel: ADSL link down
Jul 24 13:13:07 user crit kernel: ADSL G.994 training
Jul 24 13:13:09 user crit kernel: ADSL G.992 started
Jul 24 13:13:11 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:13:16 user crit kernel: ADSL link up, interleaved, us=640, ds=640
Jul 24 13:13:18 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jul 24 13:13:20 daemon info pppd[251]: Sent PADT
Jul 24 13:13:20 daemon info pppd[251]: PPP session is 12149
Jul 24 13:13:20 daemon info pppd[251]: Using interface ppp0_0_33_1
Jul 24 13:13:20 daemon notice pppd[251]: Connect: ppp_0_0_33_1 <--> nas_0_0_33
Jul 24 13:13:21 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:13:23 daemon notice pppd[251]: peer from calling number 00:0E:0C:C4:81:FF authorized
Jul 24 13:13:24 daemon notice pppd[251]: local IP address 194.44.190.145
Jul 24 13:13:24 daemon notice pppd[251]: remote IP address 192.168.192.168
Jul 24 13:13:24 daemon notice pppd[251]: primary DNS address 194.44.214.37
Jul 24 13:13:24 daemon notice pppd[251]: secondary DNS address 194.44.214.40
Jul 24 13:13:26 user debug syslog: route add default gw 192.168.192.168 2>/dev/null
Jul 24 13:13:27 user debug syslog: iptables -A FORWARD -o ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:13:27 user debug syslog: iptables -A FORWARD -i ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:13:28 user debug syslog: echo > /proc/net/ip_conntrack
Jul 24 13:13:28 user debug syslog: echo "1000" > /proc/sys/net/ipv4/ip_conntrack_max
Jul 24 13:13:28 user debug syslog: iptables -t nat -D PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107 2>/dev/null
Jul 24 13:13:28 user debug syslog: iptables -t nat -D POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE 2>/dev/null
Jul 24 13:13:28 user debug syslog: iptables -t nat -A POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE
Jul 24 13:13:28 user debug syslog: echo > /var/hosts
Jul 24 13:13:29 user debug syslog: dproxy &
Jul 24 13:13:32 user warn syslog: dns query failed
Jul 24 13:13:34 user warn syslog: dns query failed
Jul 24 13:13:36 user warn syslog: dns query failed
Jul 24 13:13:38 user warn syslog: dns query failed
Jul 24 13:13:40 user warn syslog: dns query failed
Jul 24 13:13:42 user warn syslog: dns query failed
Jul 24 13:14:19 user warn syslog: dns query failed
Jul 24 13:14:21 user warn syslog: dns query failed
Jul 24 13:14:23 user warn syslog: dns query failed
Jul 24 13:14:25 user warn syslog: dns query failed
Jul 24 13:14:27 user warn syslog: dns query failed
Jul 24 13:14:29 user warn syslog: dns query failed
Jul 24 13:15:07 user warn syslog: dns query failed
Jul 24 13:15:09 user warn syslog: dns query failed
Jul 24 13:15:11 user warn syslog: dns query failed
Jul 24 13:15:13 user warn syslog: dns query failed
Jul 24 13:15:15 user warn syslog: dns query failed
Jul 24 13:15:17 user warn syslog: dns query failed
Jul 24 13:15:51 user warn syslog: dns query failed
Jul 24 13:15:53 user warn syslog: dns query failed
Jul 24 13:15:55 user warn syslog: dns query failed
Jul 24 13:15:57 user warn syslog: dns query failed
Jul 24 13:15:59 user warn syslog: dns query failed
Jul 24 13:16:01 user warn syslog: dns query failed
Jul 24 13:16:33 user warn syslog: dns query failed
Jul 24 13:16:35 user warn syslog: dns query failed
Jul 24 13:16:37 user warn syslog: dns query failed
Jul 24 13:16:39 user warn syslog: dns query failed
Jul 24 13:16:41 user warn syslog: dns query failed
Jul 24 13:16:43 user warn syslog: dns query failed
Jul 24 13:16:51 user crit kernel: ADSL link down
Jul 24 13:16:53 user crit kernel: ADSL G.994 training
Jul 24 13:16:55 user crit kernel: ADSL G.992 started
Jul 24 13:16:55 user debug syslog: kill -9 3944
Jul 24 13:16:55 user debug syslog: echo > /var/hosts
Jul 24 13:16:57 daemon notice pppd[251]: Terminating connection due to link down.
Jul 24 13:16:57 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:16:57 daemon info pppd[251]: Connect time 3.6 minutes.
Jul 24 13:16:57 daemon info pppd[251]: Sent 6303 bytes, received 0 bytes.
Jul 24 13:16:58 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:17:03 user crit kernel: ADSL link down
Jul 24 13:17:03 user crit kernel: ADSL G.994 training
Jul 24 13:17:05 daemon notice pppd[251]: Connection terminated....
Jul 24 13:17:05 user crit kernel: ADSL G.992 started
Jul 24 13:17:08 user crit kernel: ADSL G.992 channel analysis
Jul 24 13:17:12 user crit kernel: ADSL link up, interleaved, us=640, ds=640
Jul 24 13:17:15 user debug syslog: iptables -t nat -A PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107
Jul 24 13:17:16 daemon info pppd[251]: Sent PADT
Jul 24 13:17:17 daemon info pppd[251]: PPP session is 12150
Jul 24 13:17:17 daemon info pppd[251]: Using interface ppp0_0_33_1
Jul 24 13:17:17 daemon notice pppd[251]: Connect: ppp_0_0_33_1 <--> nas_0_0_33
Jul 24 13:17:18 daemon warn pppd[251]: Couldn't increase MRU to 1500
Jul 24 13:17:20 daemon notice pppd[251]: peer from calling number 00:0E:0C:C4:81:FF authorized
Jul 24 13:17:21 daemon notice pppd[251]: local IP address 194.44.190.148
Jul 24 13:17:21 daemon notice pppd[251]: remote IP address 192.168.192.168
Jul 24 13:17:21 daemon notice pppd[251]: primary DNS address 194.44.214.37
Jul 24 13:17:21 daemon notice pppd[251]: secondary DNS address 194.44.214.40
Jul 24 13:17:26 user debug syslog: route add default gw 192.168.192.168 2>/dev/null
Jul 24 13:17:27 user debug syslog: iptables -A FORWARD -o ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:17:27 user debug syslog: iptables -A FORWARD -i ppp_0_0_33_1 -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
Jul 24 13:17:27 user debug syslog: echo > /proc/net/ip_conntrack
Jul 24 13:17:28 user debug syslog: echo "1000" > /proc/sys/net/ipv4/ip_conntrack_max
Jul 24 13:17:28 user debug syslog: iptables -t nat -D PREROUTING -i br0 -d 192.168.1.1 -p udp --dport 53 -j DNAT --to 128.9.0.107 2>/dev/null
Jul 24 13:17:28 user debug syslog: iptables -t nat -D POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE 2>/dev/null
Jul 24 13:17:28 user debug syslog: iptables -t nat -A POSTROUTING -o ppp_0_0_33_1 -s 192.168.1.0/255.255.255.0 -j MASQUERADE
Jul 24 13:17:28 user debug syslog: echo > /var/hosts
Jul 24 13:17:28 user debug syslog: dproxy &

Вроде заработал(тьфу-тьфу-тьфу).Короче,наигрался с пршивками, потом изучил настройки провайдера- поменял по пунктикам,перезагрузил...OK. При прошивке модем ставит настройки по-дефолту, а провайдер требует свои.Кстати, у моего OJSC North-West Telecom 3H00 так и не пошла,пока.javascript:emoticon(':roll:')

Короче, всё фигня... Проверил линию сам,нашел скрутку,перетянул-всё устаканилось. И прошивка 3Р00,кстати,прошивать желательно без тел линии.javascript:emoticon(':D')