Добрый день!
Есть 4 маршрутизатора, соединены в линейку по Е1:(A)-(B)-(C)-(D)
Между маршрутизаторами А и В, С и D пинг нормальный ~10 мc. Между B и C 200 мс. Не можем понять в чем дело. Настройка на всех соединениях Е1 везде идентична:
controller E1 0/1/0
framing NO-CRC4
channel-group 0 timeslots 1-19
interface Serial0/1/0:0
bandwidth 1216
ip address Х.Х.Х.Х 255.255.255.252
show interface на проблемном стыке:
Serial0/1/0:0 is up, line protocol is up
Hardware is GT96K Serial
Description: ***
Internet address is ***/30
MTU 1500 bytes, BW 1216 Kbit, DLY 20000 usec,
reliability 255/255, txload 67/255, rxload 52/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 4w0d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1336
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/1036 (size/max total/threshold/drops)
Conversations 0/29/256 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 656 kilobits/sec
5 minute input rate 251000 bits/sec, 351 packets/sec
5 minute output rate 324000 bits/sec, 300 packets/sec
1109436915 packets input, 4186830040 bytes, 0 no buffer
Received 289380 broadcasts, 0 runts, 61 giants, 0 throttles
283145 input errors, 283083 CRC, 226838 frame, 136393 overrun, 0 ignored, 139063 abort
1016355503 packets output, 3885964891 bytes, 0 underruns
0 output errors, 0 collisions, 5 interface resets
0 output buffer failures, 0 output buffers swapped out
10 carrier transitions
Timeslot(s) Used:1-19, SCC: 0, Transmitter delay is 0 flags
Serial0/0/1:0 is up, line protocol is up
Hardware is GT96K Serial
Description: ***
Internet address ***/30
MTU 1500 bytes, BW 1216 Kbit, DLY 20000 usec,
reliability 255/255, txload 53/255, rxload 66/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:31:15
Input queue: 1/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Class-based queueing
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/28/256 (active/max active/max total)
Reserved Conversations 1/1 (allocated/max allocated)
Available Bandwidth 656 kilobits/sec
5 minute input rate 315000 bits/sec, 314 packets/sec
5 minute output rate 253000 bits/sec, 366 packets/sec
581191 packets input, 60260432 bytes, 0 no buffer
Received 218 broadcasts, 0 runts, 0 giants, 0 throttles
75 input errors, 75 CRC, 54 frame, 27 overrun, 0 ignored, 40 abort
647061 packets output, 48741948 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
Timeslot(s) Used:1-19, SCC: 1, Transmitter delay is 0 flags
Почему Available Bandwidth 656 kilobits/sec?
Все 4 маршрутизатора находятся в одной зоне OSPF. Пинги и трассировка идут напрямую.
В чем же может быть дело?
Заранее спасибо за ответы.