Не работает мультилинк между 3660ой и 1721ой - со стороны 3660ой нету исходящих пакетов:

Со стороны 1721ой конфиг и интерфейс:

interface Serial0
bandwidth 128
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
end

interface Multilink1
ip address 192.168.148.134 255.255.255.252
fair-queue 64 256 1000
ppp multilink
ppp multilink fragment delay 10
ppp multilink interleave
ppp multilink group 1
ip rtp priority 16384 16383 64
end

Multilink1 is up, line protocol is up
  Hardware is multilink group interface
  Internet address is 192.168.148.134/30
  MTU 1500 bytes, BW 128 Kbit, DLY 100000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Open, multilink Open
  REQsent: IPCP, loopback not set
  DTR is pulsed for 2 seconds on reset
  Last input 00:35:04, output never, output hang never
  Last clearing of "show interface" counters 00:03:05
  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  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 32 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 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
     34 packets output, 408 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

Со стороны 3660ой конфиг и интерфейс:

interface Serial1/7
no ip address
ip accounting output-packets
encapsulation ppp
no fair-queue
no cdp enable
ppp multilink
multilink-group 1
end

interface Multilink1
ip address 192.168.148.133 255.255.255.252
fair-queue 64 256 1000
no cdp enable
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
multilink-group 1
ip rtp priority 16384 16383 64

Multilink1 is up, line protocol is up
  Hardware is multilink group interface
  Internet address is 192.168.148.133/30
  MTU 1500 bytes, BW 128 Kbit, DLY 100000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, loopback not set
  Keepalive set (10 sec)
  DTR is pulsed for 2 seconds on reset
  LCP Open, multilink Open
  Listen: IPCP
  Last input 00:00:00, output never, output hang never
  Last clearing of "show interface" counters 00:01:16
  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  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 32 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     17 packets input, 238 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
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     0 carrier transitions

На интерфейсах S1/7 и S0 соответственно есть и исходящие, и входящие пакеты.
Софт на 3660ой: c3660-ik2s-mz.121-5.T15.bin
Софт на 1721ой: c1700-k9o3sy7-mz.123-1a.bin
С софтом 123-3 на 3660й (стенд) все заработало, но надо на рабочей cisco победить на 121-5.Т15.

• PPP Multilink, ВОЛКА, 00:58 , 18-Сен-03, (1)  
  • PPP Multilink, Corhaid, 04:48 , 18-Сен-03, (2)  
    • PPP Multilink, Sonne, 10:01 , 18-Сен-03, (3)  
      • PPP Multilink, Corhaid, 02:33 , 19-Сен-03, (4)