Исходное сообщение
"Разные MTU на интерфейсе " Отправлено Kan, 16-Авг-05 08:41
В дагонку Вот схема LOCAL1 -> Cisco 2651 < Tunnel over ADSL> Cisco 837-> LOCAL 2 Между кошками ADSL На интерфейсе ATM, Tunnel0 и Dialer0 вот что написано ATM0/0 is up, line protocol is up   Hardware is DSLSAR (with Alcatel ADSL Module)   MTU 4470 bytes, sub MTU 4470, BW 512 Kbit, DLY 1000 usec,      reliability 255/255, txload 4/255, rxload 9/255   Encapsulation ATM, loopback not set   Encapsulation(s): AAL5  AAL2, PVC mode   23 maximum active VCs, 256 VCs per VP, 1 current VCCs   VC Auto Creation Disabled.   VC idle disconnect time: 300 seconds   Last input never, output 00:00:00, output hang never   Last clearing of "show interface" counters never   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 532   Queueing strategy: Per VC Queueing   5 minute input rate 20000 bits/sec, 11 packets/sec   5 minute output rate 9000 bits/sec, 10 packets/sec      2472356 packets input, 589924058 bytes, 0 no buffer      Received 0 broadcasts, 0 runts, 0 giants, 0 throttles      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort      4492965 packets output, 816029506 bytes, 0 underruns      0 output errors, 0 collisions, 0 interface resets      0 output buffer failures, 0 output buffers swapped out Tunnel0 is up, line protocol is up   Hardware is Tunnel   Internet address is 192.168.250.1/24   MTU 1514 bytes, BW 9 Kbit, DLY 500000 usec,      reliability 255/255, txload 1/255, rxload 1/255   Encapsulation TUNNEL, loopback not set   Keepalive not set   Tunnel source xxx.xxx.xxx.xxx (Dialer0), destination yyy.yyy.yyy.yyy   Tunnel protocol/transport GRE/IP, key disabled, sequencing disabled   Tunnel TTL 255   Checksumming of packets disabled,  fast tunneling enabled   Last input 00:01:03, output 00:01:07, output hang never   Last clearing of "show interface" counters never   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2   Queueing strategy: fifo   Output queue: 0/0 (size/max)   5 minute input rate 0 bits/sec, 0 packets/sec   5 minute output rate 0 bits/sec, 0 packets/sec      1447 packets input, 164075 bytes, 0 no buffer      Received 0 broadcasts, 0 runts, 0 giants, 0 throttles      0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort      975 packets output, 105011 bytes, 0 underruns      0 output errors, 0 collisions, 0 interface resets      0 output buffer failures, 0 output buffers swapped out Dialer0 is up, line protocol is up (spoofing)   Hardware is Unknown   Internet address is xxx.xxx.xxx.xxx/30   MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec,      reliability 255/255, txload 1/255, rxload 1/255   Encapsulation PPP, loopback not set   Interface is bound to Vi3   Last input never, output never, output hang never   Last clearing of "show interface" counters 1w4d   Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0   Queueing strategy: weighted fair   Output queue: 0/1000/64/0 (size/max total/threshold/drops)      Conversations  0/0/16 (active/max active/max total)      Reserved Conversations 0/0 (allocated/max allocated)      Available Bandwidth 42 kilobits/sec   5 minute input rate 0 bits/sec, 0 packets/sec   5 minute output rate 0 bits/sec, 0 packets/sec      2472006 packets input, 589882565 bytes      4493288 packets output, 798341192 bytes