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Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-14 12:37:02
GhOsT_MZ
Доброго времени суток!
Имеем: ADSL (Bridge) --> Cisco 2621 (PPPoE-client) --> Proxy (PAT)
Cisco 2621 выступает в роли PPPoE-клиента, получая на Dialer1 внутренний адрес сети провайдера, через который маршрутизируется подсеть с битовой маской 29. Внутренний интерфейс циски имеет внешний адрес, также, сервер с прокси-сервером имеет внешний адрес. Пинги в мир идут замечательно, фтп в пассивном режиме работает (в активном не пробовал), говорят, что и скайп работает, но вот элементарно http работать не желает, также не хочет работать и аська.
Когда настраиваю выход в интернет таким образом, то все работает:
ADSL (PPPoE-client) --> Proxy (PAT)

Собственно вопрос, в чем может быть затык?
Пробовал debug ip packet поизучать, вроде TCP-сегменты убегают во внешний мир, но, если честно, сконцентрироваться на изучении не дали, так как заставили временно настроить работу интернет другим способом, так что, пока не могу продолжать ковыряние, пишу здесь)

Конфигурация роутера:

Код: Выделить всё

> version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Rostov-2621XM-down
!
boot-start-marker
boot-end-marker
!
no network-clock-participate slot 1
no network-clock-participate wic 0
!
!
ip subnet-zero
ip cef
!
!
!
vpdn enable
!
vpdn-group 1
  request-dialin
  protocol pppoe
!
no ftp-server write-enable
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
interface FastEthernet0/0
  ip address XXX.XXX.XXX.XXX 255.255.255.248
  duplex auto
  speed auto
!
interface Serial0/0
  no ip address
  shutdown
!
interface FastEthernet0/1
  ip address 192.168.1.2 255.255.255.0
  duplex auto
  speed auto
  pppoe enable
  pppoe-client dial-pool-number 1
!
interface Serial0/1
  no ip address
  shutdown
!
interface Dialer1
  ip address negotiated
  encapsulation ppp
  dialer pool 1
  dialer-group 1
  ppp authentication pap callin
  ppp pap sent-username user password 0 password
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
!
dialer-list 1 protocol ip permit
!
!
!
!
!
!
!
line con 0
line aux 0
line vty 5 15
!
!
!
end

Re: Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-14 21:20:03
GhOsT_MZ
Заметил при debugging ip packet не очень красивую запись:

Код: Выделить всё

*Mar  1 06:44:59.257: IP: s=31.181.220.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), len 28, encapsulation failed
Полный лог:

Код: Выделить всё

*Mar  1 06:37:39.604: IP: tableid=0, s=87.117.23.25 (local), d=87.117.23.29 (FastEthernet0/0), routed via FIB
*Mar  1 06:37:39.608: IP: s=87.117.23.25 (local), d=87.117.23.29 (FastEthernet0/0), len 97, sending
*Mar  1 06:37:39.608:     TCP src=23, dst=3637, seq=110858086, ack=1945190730, win=4042 ACK PSH
*Mar  1 06:37:39.608: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=87.117.23.25 (FastEthernet0/0), routed via RIB
*Mar  1 06:37:39.608: IP: s=87.117.23.29 (FastEthernet0/0), d=87.117.23.25 (FastEthernet0/0), len 40, rcvd 3
*Mar  1 06:37:39.608:     TCP src=3637, dst=23, seq=1945190730, ack=110858143, win=65173 ACK
*Mar  1 06:37:48.078: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=173.194.32.240 (Dialer1), routed via RIB
*Mar  1 06:37:48.078: IP: s=87.117.23.29 (FastEthernet0/0), d=173.194.32.240 (Dialer1), g=173.194.32.240, len 48, forward
*Mar  1 06:37:48.078:     TCP src=3638, dst=80, seq=2834156386, ack=0, win=65535 SYN
*Mar  1 06:37:48.082: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=173.194.32.240 (Dialer1), routed via RIB
*Mar  1 06:37:48.082: IP: s=87.117.23.29 (FastEthernet0/0), d=173.194.32.240 (Dialer1), g=173.194.32.240, len 40, forward
*Mar  1 06:37:48.082:     TCP src=3423, dst=80, seq=3629302726, ack=3694285632,win=0 ACK RST
*Mar  1 06:37:48.134: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=87.250.251.91 (Dialer1), routed via RIB
*Mar  1 06:37:48.138: IP: s=87.117.23.29 (FastEthernet0/0), d=87.250.251.91 (Dialer1), g=87.250.251.91, len 40, forward
*Mar  1 06:37:48.138:     TCP src=3473, dst=80, seq=1699784931, ack=3848160464,win=0 ACK RST
*Mar  1 06:39:58.323: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=80.254.111.254 (Dialer1), routed via RIB
*Mar  1 06:39:58.323: IP: s=87.117.23.29 (FastEthernet0/0), d=80.254.111.254 (Dialer1), g=80.254.111.254, len 64, forward
*Mar  1 06:39:58.323:     UDP src=58667, dst=53
*Mar  1 06:40:09.818: IP: tableid=0, s=118.169.54.160 (Dialer1), d=87.117.23.27(FastEthernet0/0), routed via RIB
*Mar  1 06:40:09.818: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 48, forward
*Mar  1 06:40:09.818:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:09.818: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:40:09.822:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:12.851: IP: tableid=0, s=118.169.54.160 (Dialer1), d=87.117.23.27(FastEthernet0/0), routed via RIB
*Mar  1 06:40:12.851: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 48, forward
*Mar  1 06:40:12.851:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:12.851: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:40:12.851:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:18.865: IP: tableid=0, s=118.169.54.160 (Dialer1), d=87.117.23.27(FastEthernet0/0), routed via RIB
*Mar  1 06:40:18.865: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 48, forward
*Mar  1 06:40:18.869:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:18.869: IP: s=118.169.54.160 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:40:18.869:     TCP src=2613, dst=445, seq=180271794, ack=0, win=65535 SYN
*Mar  1 06:40:40.052: IP: tableid=0, s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), routed via RIB
*Mar  1 06:40:40.052: IP: s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), g=87.117.23.30, len 48, forward
*Mar  1 06:40:40.052:     TCP src=1736, dst=445, seq=2620518294, ack=0, win=49152 SYN
*Mar  1 06:40:40.052: IP: s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:40:40.052:     TCP src=1736, dst=445, seq=2620518294, ack=0, win=49152 SYN
*Mar  1 06:40:43.057: IP: tableid=0, s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), routed via RIB
*Mar  1 06:40:43.057: IP: s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), g=87.117.23.30, len 48, forward
*Mar  1 06:40:43.057:     TCP src=1736, dst=445, seq=2620518294, ack=0, win=49152 SYN
*Mar  1 06:40:43.057: IP: s=95.37.251.162 (Dialer1), d=87.117.23.30 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:40:43.057:     TCP src=1736, dst=445, seq=2620518294, ack=0, win=49152 SYN
*Mar  1 06:41:49.914: IP: tableid=0, s=27.254.41.163 (Dialer1), d=87.117.23.27 (FastEthernet0/0), routed via RIB
*Mar  1 06:41:49.914: IP: s=27.254.41.163 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 44, forward
*Mar  1 06:41:49.914:     TCP src=2928, dst=3072, seq=3688442184, ack=3966057799, win=5840 ACK SYN
*Mar  1 06:41:49.914: IP: s=27.254.41.163 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 44, encapsulation failed
*Mar  1 06:41:49.914:     TCP src=2928, dst=3072, seq=3688442184, ack=3966057799, win=5840 ACK SYN
*Mar  1 06:42:06.538: IP: tableid=0, s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:06.538: IP: s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 48, forward
*Mar  1 06:42:06.538:     TCP src=15265, dst=445, seq=1792022753, ack=0, win=65535 SYN
*Mar  1 06:42:06.538: IP: s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:42:06.538:     TCP src=15265, dst=445, seq=1792022753, ack=0, win=65535 SYN
*Mar  1 06:42:08.116: IP: tableid=0, s=70.38.12.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:08.116: IP: s=70.38.12.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), g=87.117.23.28, len 48, forward
*Mar  1 06:42:08.116:     TCP src=14396, dst=22, seq=1158592800, ack=1511911956, win=65535 SYN
*Mar  1 06:42:08.116: IP: s=70.38.12.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:42:08.116:     TCP src=14396, dst=22, seq=1158592800, ack=1511911956, win=65535 SYN
*Mar  1 06:42:08.116: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=70.38.12.106 (Dialer1), routed via RIB
*Mar  1 06:42:08.120: IP: s=87.117.23.29 (FastEthernet0/0), d=70.38.12.106 (Dialer1), g=70.38.12.106, len 40, forward
*Mar  1 06:42:08.120:     TCP src=22, dst=14396, seq=0, ack=1407967283, win=0 ACK RST
*Mar  1 06:42:08.120: IP: tableid=0, s=70.38.12.106 (Dialer1), d=87.117.23.31 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:08.120: IP: s=70.38.12.106 (Dialer1), d=87.117.23.31 (FastEthernet0/0), len 48, rcvd 5
*Mar  1 06:42:08.124:     TCP src=14396, dst=22, seq=1757755239, ack=1505594239, win=65535 SYN
*Mar  1 06:42:08.124: IP: tableid=0, s=70.38.12.106 (Dialer1), d=87.117.23.24 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:08.124: IP: s=70.38.12.106 (Dialer1), d=87.117.23.24 (FastEthernet0/0), len 48, rcvd 5
*Mar  1 06:42:08.124:     TCP src=14396, dst=22, seq=770516256, ack=929184549, win=65535 SYN
*Mar  1 06:42:08.124: IP: tableid=0, s=70.38.12.106 (Dialer1), d=87.117.23.25 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:08.124: IP: s=70.38.12.106 (Dialer1), d=87.117.23.25, len 48, rcvd 4
*Mar  1 06:42:08.124:     TCP src=14396, dst=22, seq=1172533526, ack=1952033748, win=65535 SYN
*Mar  1 06:42:08.124: IP: tableid=0, s=87.117.23.25 (local), d=70.38.12.106 (Dialer1), routed via RIB
*Mar  1 06:42:08.124: IP: s=87.117.23.25 (local), d=70.38.12.106 (Dialer1), len40, sending
*Mar  1 06:42:08.128:     TCP src=22, dst=14396, seq=1952033748, ack=1172533527, win=0 ACK RST
*Mar  1 06:42:08.128: IP: tableid=0, s=70.38.12.106 (Dialer1), d=87.117.23.30 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:08.128: IP: s=70.38.12.106 (Dialer1), d=87.117.23.30 (FastEthernet0/0), g=87.117.23.30, len 48, forward
*Mar  1 06:42:08.128:     TCP src=14396, dst=22, seq=1362397949, ack=1538907941, win=65535 SYN
*Mar  1 06:42:08.128: IP: s=70.38.12.106 (Dialer1), d=87.117.23.30 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:42:08.128:     TCP src=14396, dst=22, seq=1362397949, ack=1538907941, win=65535 SYN
*Mar  1 06:42:09.486: IP: tableid=0, s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), routed via RIB
*Mar  1 06:42:09.486: IP: s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 48, forward
*Mar  1 06:42:09.486:     TCP src=15265, dst=445, seq=1792022753, ack=0, win=65535 SYN
*Mar  1 06:42:09.486: IP: s=213.133.21.52 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 48, encapsulation failed
*Mar  1 06:42:09.486:     TCP src=15265, dst=445, seq=1792022753, ack=0, win=65535 SYN
*Mar  1 06:42:15.244: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.25(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.244: IP: s=208.248.77.132 (Dialer1), d=87.117.23.25, len 40, rcvd 4
*Mar  1 06:42:15.244:     TCP src=80, dst=11444, seq=2739766622, ack=305419897,win=16384 ACK SYN
*Mar  1 06:42:15.248: IP: tableid=0, s=87.117.23.25 (local), d=208.248.77.132 (Dialer1), routed via RIB
*Mar  1 06:42:15.248: IP: s=87.117.23.25 (local), d=208.248.77.132 (Dialer1), len 40, sending
*Mar  1 06:42:15.248:     TCP src=11444, dst=80, seq=305419897, ack=0, win=0 RST
*Mar  1 06:42:15.256: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.30(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.256: IP: s=208.248.77.132 (Dialer1), d=87.117.23.30 (FastEthernet0/0), g=87.117.23.30, len 40, forward
*Mar  1 06:42:15.256:     TCP src=80, dst=11449, seq=546771698, ack=305419897, win=16384 ACK SYN
*Mar  1 06:42:15.260: IP: s=208.248.77.132 (Dialer1), d=87.117.23.30 (FastEthernet0/0), len 40, encapsulation failed
*Mar  1 06:42:15.260:     TCP src=80, dst=11449, seq=546771698, ack=305419897, win=16384 ACK SYN
*Mar  1 06:42:15.260: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.24(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.260: IP: s=208.248.77.132 (Dialer1), d=87.117.23.24 (FastEthernet0/0), len 40, rcvd 5
*Mar  1 06:42:15.260:     TCP src=80, dst=11443, seq=2271635578, ack=305419897,win=16384 ACK SYN
*Mar  1 06:42:15.260: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.28(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.260: IP: s=208.248.77.132 (Dialer1), d=87.117.23.28 (FastEthernet0/0), g=87.117.23.28, len 40, forward
*Mar  1 06:42:15.264:     TCP src=80, dst=11447, seq=3729382218, ack=305419897,win=16384 ACK SYN
*Mar  1 06:42:15.264: IP: s=208.248.77.132 (Dialer1), d=87.117.23.28 (FastEthernet0/0), len 40, encapsulation failed
*Mar  1 06:42:15.264:     TCP src=80, dst=11447, seq=3729382218, ack=305419897,win=16384 ACK SYN
*Mar  1 06:42:15.264: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=208.248.77.132 (Dialer1), routed via RIB
*Mar  1 06:42:15.264: IP: s=87.117.23.29 (FastEthernet0/0), d=208.248.77.132 (Dialer1), g=208.248.77.132, len 40, forward
*Mar  1 06:42:15.264:     TCP src=11448, dst=80, seq=305419897, ack=305419897, win=0 RST
*Mar  1 06:42:15.264: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.31(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.268: IP: s=208.248.77.132 (Dialer1), d=87.117.23.31 (FastEthernet0/0), len 40, rcvd 5
*Mar  1 06:42:15.268:     TCP src=80, dst=11450, seq=819605269, ack=305419897, win=16384 ACK SYN
*Mar  1 06:42:15.268: IP: tableid=0, s=208.248.77.132 (Dialer1), d=87.117.23.27(FastEthernet0/0), routed via RIB
*Mar  1 06:42:15.268: IP: s=208.248.77.132 (Dialer1), d=87.117.23.27 (FastEthernet0/0), g=87.117.23.27, len 40, forward
*Mar  1 06:42:15.268:     TCP src=80, dst=11446, seq=3273899462, ack=305419897,win=16384 ACK SYN
*Mar  1 06:42:15.268: IP: s=208.248.77.132 (Dialer1), d=87.117.23.27 (FastEthernet0/0), len 40, encapsulation failed
*Mar  1 06:42:15.268:     TCP src=80, dst=11446, seq=3273899462, ack=305419897,win=16384 ACK SYN
*Mar  1 06:43:19.818: IP: tableid=0, s=178.140.115.244 (Dialer1), d=87.117.23.31 (FastEthernet0/0), routed via RIB
*Mar  1 06:43:19.818: IP: s=178.140.115.244 (Dialer1), d=87.117.23.31 (FastEthernet0/0), len 52, rcvd 5
*Mar  1 06:43:19.818:     TCP src=3550, dst=445, seq=498514860, ack=0, win=65535 SYN
*Mar  1 06:43:21.048: IP: tableid=0, s=83.27.252.163 (Dialer1), d=87.117.23.24 (FastEthernet0/0), routed via RIB
*Mar  1 06:43:21.048: IP: s=83.27.252.163 (Dialer1), d=87.117.23.24 (FastEthernet0/0), len 48, rcvd 5
*Mar  1 06:43:21.048:     TCP src=2113, dst=445, seq=3456505075, ack=0, win=64240 SYN
*Mar  1 06:43:22.815: IP: tableid=0, s=178.140.115.244 (Dialer1), d=87.117.23.31 (FastEthernet0/0), routed via RIB
*Mar  1 06:43:22.815: IP: s=178.140.115.244 (Dialer1), d=87.117.23.31 (FastEthernet0/0), len 52, rcvd 5
*Mar  1 06:43:22.819:     TCP src=3550, dst=445, seq=498514860, ack=0, win=65535 SYN
*Mar  1 06:43:24.069: IP: tableid=0, s=83.27.252.163 (Dialer1), d=87.117.23.24 (FastEthernet0/0), routed via RIB
*Mar  1 06:43:24.069: IP: s=83.27.252.163 (Dialer1), d=87.117.23.24 (FastEthernet0/0), len 48, rcvd 5
*Mar  1 06:43:24.069:     TCP src=2113, dst=445, seq=3456505075, ack=0, win=64240 SYN
*Mar  1 06:44:24.600: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=83.221.202.254 (Dialer1), routed via RIB
*Mar  1 06:44:24.600: IP: s=87.117.23.29 (FastEthernet0/0), d=83.221.202.254 (Dialer1), g=83.221.202.254, len 60, forward
*Mar  1 06:44:24.600:     UDP src=61689, dst=53
*Mar  1 06:44:25.826: IP: tableid=0, s=87.117.23.29 (FastEthernet0/0), d=62.105.144.45 (Dialer1), routed via RIB
*Mar  1 06:44:25.826: IP: s=87.117.23.29 (FastEthernet0/0), d=62.105.144.45 (Dialer1), g=62.105.144.45, len 113, forward
*Mar  1 06:44:25.826:     UDP src=60332, dst=53
*Mar  1 06:44:59.257: IP: tableid=0, s=31.181.220.106 (Dialer1), d=87.117.23.28(FastEthernet0/0), routed via RIB
*Mar  1 06:44:59.257: IP: s=31.181.220.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), g=87.117.23.28, len 28, forward
*Mar  1 06:44:59.257:     ICMP type=8, code=0
*Mar  1 06:44:59.257: IP: s=31.181.220.106 (Dialer1), d=87.117.23.28 (FastEthernet0/0), len 28, encapsulation failed
*Mar  1 06:44:59.257:     ICMP type=8, code=0
*Mar  1 06:45:26.938: IP: tableid=0, s=61.160.235.208 (Dialer1), d=87.117.23.31(FastEthernet0/0), routed via RIB
*Mar  1 06:45:26.938: IP: s=61.160.235.208 (Dialer1), d=87.117.23.31 (FastEthernet0/0), len 44, rcvd 5
*Mar  1 06:45:26.938:     TCP src=80, dst=48715, seq=3487140012, ack=3674933078, win=5840 ACK SYN
Также, по show ip traffic много encapsulation failed, которые занимают достаточно большую долю от общего количества пакетов. Показать статистику пока не могу, только завтра, так как маршрутизатор случайно "отрубил" от внешнего мира.
На форуме циски предлагали сделать arp IP MAC snap, что мне не помогло, хотя, возможно там не совсем вник в проблему изза плохого знания английского.

Re: Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-14 21:27:28
LimpTeaM
все не читал. в цисках не силен, но вот в соседней теме про openvpn помогло понижение mtu
и мне почему то кажется что загвоздка именно в нем

Re: Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-14 21:31:56
GhOsT_MZ
mtu на виртуальном интерфейсе понизил до 1492 (а вообще, понижал до 1300), как рекомендуется в документации, да и инкапсуляция врядли имеет к нему отношение...

Re: Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-15 12:00:17
GhOsT_MZ
Между маршрутизатором и прокси-сервером поставил фаервол (Cisco PIX 515E), как и планировалось ранее, и проблема исчезла. Вот теперь интересна природа такого явления...

Re: Cisco 2621 PPPoE-клиент

Добавлено: 2011-12-15 16:12:46
lap
попробуй на интерфейсах с ипи адресами выставить ip mtu и ip tcp adjust-mss (параметры надо подгонять, у меня все начинает работает при 1492/1450). Включал на обоих интерфейсах (и дилер, и фастизер в сторону локалки)