[User001]

Я думаю может в сети Б поднять еще DNS? »

Тогда уж контроллер домена...

Nslookup с клиентов пробЫвал, все имена и IP отрабатывает... »

И что показывают ipconfig /all, nslookup имя_домена, ping контроллер_домена во время пропадания?

[artem_cher]

Пока не удалось зафиксировать потерю домена...
Зашел, на клиента сети Б зделал Nslookup имя_домена, он мне выдал 4 разных IP DC, один из них был корректный. Все остальные я удалил из ДНС.
Пока вроде никто не жаловался на отвал шар.

[User001]

Зашел, на клиента сети Б зделал Nslookup имя_домена, он мне выдал 4 разных IP DC, один из них был корректный. Все остальные я удалил из ДНС. »

Покажите тогда и в нормальном состоянии.

[artem_cher]

Ipconfig /all

Настройка протокола IP для Windows

Имя компьютера . . . . . . . . . : имя компа
Основной DNS-суффикс . . . . . . : домен.ru
Тип узла. . . . . . . . . . . . . : неизвестный
IP-маршрутизация включена . . . . : нет
WINS-прокси включен . . . . . . . : нет
Порядок просмотра суффиксов DNS . : домен.ru

Подключение по локальной сети - Ethernet адаптер:

DNS-суффикс этого подключения . . :
Описание . . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Физический адрес. . . . . . . . . : 09-60-6B-66-84-12
DHCP включен. . . . . . . . . . . : нет
IP-адрес . . . . . . . . . . . . : 192.168.8.12
Маска подсети . . . . . . . . . . : 255.255.248.0
Основной шлюз . . . . . . . . . . : 192.168.8.1
DNS-серверы . . . . . . . . . . . : 192.168.1.1

Nslookup домен.ru

Server: имя_сервера.домен.ru
Address: 192.168.1.1

Name: домен.ru
Address: 192.168.1.1



Точно помню, когда была потеря DC, DC пинговался.

[artem_cher]

Опять домен потерялся...
DC пингуется, nslookup домен.ру, ipconfig /all - так же как на примере выше...
После того как залез в сетевые настройки, вышел и DC нашёлся...

[User001]

иногда теряют контроллер домена (Не удалось найти контроллер домена) »

Покажите скриншот ошибки. Посмотрите ошибки в журнале событий рабочей станции.

[artem_cher]

В логах "приложение", событие 1054.

Не удалось получить имя контроллера домена в этой сети. (Указанный домен не существует или к нему невозможно подключиться. ). Обработка групповой политики прекращена.

[User001]

Покажите с КД dcdiag /q, dcdiag /test:dns.

[artem_cher]

dcdiag /q

An Error Event occured. EventID: 0x40000004
Time Generated: 05/13/2015 13:27:41
(Event String could not be retrieved)
An Error Event occured. EventID: 0x40000004
Time Generated: 05/13/2015 13:27:41
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:36
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:40
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:40
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:40
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:41
(Event String could not be retrieved)
An Error Event occured. EventID: 0x00000457
Time Generated: 05/13/2015 13:56:41
(Event String could not be retrieved)
......................... server_name failed test systemlog

dcdiag /test:dns

Domain Controller Diagnosis

Performing initial setup:
Done gathering initial info.

Doing initial required tests

Testing server: Default-First-Site-Name\server_name
Starting test: Connectivity
......................... server_name passed test Connectivity

Doing primary tests

Testing server: Default-First-Site-Name\server_name

DNS Tests are running and not hung. Please wait a few minutes...

Running partition tests on : ForestDnsZones

Running partition tests on : DomainDnsZones

Running partition tests on : Schema

Running partition tests on : Configuration

Running partition tests on : домен

Running enterprise tests on : домен.ru
Starting test: DNS
Test results for domain controllers:

DC: server_name.домен.ru
Domain: домен.ru


TEST: Basic (Basc)
Warning: adapter [00000007] Intel(R) PRO/1000 EB Network Connection with I/O Acceleration has invalid DNS server: 192.168.111.254 (<name unavailable>)
Warning: adapter [00000007] Intel(R) PRO/1000 EB Network Connection with I/O Acceleration has invalid DNS server: 195.161.0.135 (<name unavailable>)

TEST: Forwarders/Root hints (Forw)
Error: Forwarders list has invalid forwarder: 192.168.111.201 (<name unavailable>)
Error: Forwarders list has invalid forwarder: 192.168.111.254 (<name unavailable>)
Error: Root hints list has invalid root hint server: a.root-servers.net. (198.41.0.4)
Error: Root hints list has invalid root hint server: b.root-servers.net. (192.228.79.201)
Error: Root hints list has invalid root hint server: c.root-servers.net. (192.33.4.12)
Error: Root hints list has invalid root hint server: d.root-servers.net. (128.8.10.90)
Error: Root hints list has invalid root hint server: e.root-servers.net. (192.203.230.10)
Error: Root hints list has invalid root hint server: f.root-servers.net. (192.5.5.241)
Error: Root hints list has invalid root hint server: g.root-servers.net. (192.112.36.4)
Error: Root hints list has invalid root hint server: h.root-servers.net. (128.63.2.53)
Error: Root hints list has invalid root hint server: i.root-servers.net. (192.36.148.17)
Error: Root hints list has invalid root hint server: j.root-servers.net. (192.58.128.30)
Error: Root hints list has invalid root hint server: k.root-servers.net. (193.0.14.129)
Error: Root hints list has invalid root hint server: l.root-servers.net. (199.7.83.42)
Error: Root hints list has invalid root hint server: m.root-servers.net. (202.12.27.33)

TEST: Dynamic update (Dyn)
Warning: Dynamic update is enabled on the zone but not secure домен.ru.

Summary of test results for DNS servers used by the above domain controllers:

DNS server: 192.168.111.254 (<name unavailable>)
2 test failures on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.168.111.254
Name resolution is not functional. _ldap._tcp.домен.ru. failed on the DNS server 192.168.111.254

DNS server: 202.12.27.33 (m.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 202.12.27.33

DNS server: 199.7.83.42 (l.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 199.7.83.42

DNS server: 198.41.0.4 (a.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 198.41.0.4

DNS server: 195.161.0.135 (<name unavailable>)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 195.161.0.135
Name resolution is not functional. _ldap._tcp.домен.ru. failed on the DNS server 195.161.0.135

DNS server: 193.0.14.129 (k.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 193.0.14.129

DNS server: 192.58.128.30 (j.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.58.128.30

DNS server: 192.5.5.241 (f.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.5.5.241

DNS server: 192.36.148.17 (i.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.36.148.17

DNS server: 192.33.4.12 (c.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.33.4.12

DNS server: 192.228.79.201 (b.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.228.79.201

DNS server: 192.203.230.10 (e.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.203.230.10

DNS server: 192.112.36.4 (g.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.112.36.4

DNS server: 128.8.10.90 (d.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 128.8.10.90

DNS server: 128.63.2.53 (h.root-servers.net.)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 128.63.2.53

DNS server: 192.168.111.201 (<name unavailable>)
1 test failure on this DNS server
This is not a valid DNS server. PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.168.111.201

Summary of DNS test results:

Auth Basc Forw Del Dyn RReg Ext
________________________________________________________________
Domain: домен.ru
server_name PASS WARN FAIL PASS WARN PASS n/a

......................... домен.ru failed test DNS