Здравствуйте!
Помогите, пожалуйста с проблемой:
Есть подключение к оператору, с ним поднят BGP пиринг для доступа в инет, кроссировка сделана по оптике, но установлены медиаконвертеры. На канале возникают ошибки, но только под нагрузкой траффиком, что может быть причиной? Скорость канала по договору 20 Мбит/с, при траффике более 7 Мбит/с возникают потери, уровень не большой - порядка 50 пакетов из 10000. На "пустом" канале ошибок нет.
Схема:
Cisco 2821 - Cisco 3560 - конвертеры "медь-оптика" - Juniper MXНа Cisco 2821 и Juniper организованы сабинтерфейсы для BGP пиринга.
Конвертеры Olencom mc100, попробовали заменить - ничего не изменилось. Скорость стоит в auto, ошибок на интерфейсах нет, только на порту коммутатора, подключенного к циске есть некоторые ошибки:
sh interface counters errors
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize
Fa1/0/1 0 0 0 0 615645575
Fa1/0/2 0 0 0 0 652303942
Интерфейсы Fa 1/0/1 и 1/0/2 подключены к 2821. На остальных портах ошибок нет.
Подскажите, может быть проблема в этих ошибках? Стоит ли на конвертерах жестко установить скорость и дуплекс (оператор уверяет, что не надо)?
Вот статистика с других интерфейсов (к Fa 1/0/6 подключен оператор)
FastEthernet1/0/6 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 001c.f903.3b88 (bia 001c.f903.3b88)
Description: --Earthlink to Megafon (305 room) 2013-07-04 -- smaltsev--
MTU 1600 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 9/255, rxload 39/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:19, output 00:00:01, output hang never
Last clearing of "show interface" counters 01:07:51
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 15558000 bits/sec, 2839 packets/sec
30 second output rate 3762000 bits/sec, 2439 packets/sec
12143973 packets input, 3832957174 bytes, 0 no buffer
Received 140 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 136 multicast, 0 pause input
0 input packets with dribble condition detected
10830974 packets output, 1832464718 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
FastEthernet1/0/1 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 001c.f903.3b83 (bia 001c.f903.3b83)
Description: --link to SPB-PE02 Fa0/0--
MTU 1600 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 54/255, rxload 35/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 1y0w, output 00:00:00, output hang never
Last clearing of "show interface" counters 01:08:21
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 14092000 bits/sec, 3879 packets/sec
5 minute output rate 21303000 bits/sec, 5526 packets/sec
16744021 packets input, 3425501553 bytes, 0 no buffer
Received 1517 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1449 multicast, 17 pause input
0 input packets with dribble condition detected
23000956 packets output, 2151818176 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
FastEthernet1/0/2 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 001c.f903.3b84 (bia 001c.f903.3b84)
Description: --link to SPB-PE02 Fa0/1--
MTU 1600 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 18/255, rxload 37/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 1y0w, output 00:00:01, output hang never
Last clearing of "show interface" counters 01:08:25
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 14668000 bits/sec, 3365 packets/sec
5 minute output rate 7119000 bits/sec, 3289 packets/sec
13036074 packets input, 2731978832 bytes, 0 no buffer
Received 1417 broadcasts (0 multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 1406 multicast, 0 pause input
0 input packets with dribble condition detected
13101228 packets output, 3810700306 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out