Привет всем!
Подскажите как решить или хотя бы локализовать проблему:
Запускаю видеоконференцсвязь (оборудование Polycom H.323) по выделенному каналу 512К. Маршрутизаторы - Cisco2620.
Polyspan фиксирует постоянные потери пакетов (листинг ниже). Причем в это время в канале кроме самой видеоконференции (которая работает на 384К) никаких других приложений нет. Настроил на роутере LLQ (см ниже), но результат тот же. Причем вижу, что очередь на выходе Cisco практически всегда нулевой длины. Пакеты на serial интерфейсе Cisco не дропятся. Голос (ip телефония) по этому каналу вроде идет нормально (хотя, возможно, потери если они есть, просто компенсируются кодеком).
Софт на Polyspan свежий (7.2).  

*******************************Сообщения POLYCOM:

RTP: Minimum/MaximumThreshold = 4 0/256, 4 0/256
Received a Picture Fast Update request from the other side
...VideoFastUpdatePictureHandler() time 13786462
UI:UI msg from VidDec: S VD1 ReceivedFreezeRelease 0
Audio: tell UI to turn Ctrack off
UI:UI msg from Audio: S AUDIO CtrackOnOff Off
H320[2]: Rcv Time =  68: Stop c0
RTP: Video Packet Lost!
RTP: Reseting last_seq_num from 18263 to 18264
RTP: Send FastVideoPicture_MSG
RTP: Max. video packets stored = 4
RTP: Minimum/MaximumThreshold = 4 0/256, 4 0/256
Received a Picture Fast Update request from the other side
...VideoFastUpdatePictureHandler() time 13792433
UI:UI msg from VidDec: S VD1 ReceivedFreezeRelease 0
Audio Packet(s) lost - last_seq_num = 15449, new_seq_num = 15451
Transfer 1 duplicate packets
RTP: Max. video packets stored = 2
RTP: Minimum/MaximumThreshold = 4 0/256, 4 0/256
RTP: Video Packet Lost!
RTP: Reseting last_seq_num from 18600 to 18601
RTP: Send FastVideoPicture_MSG
...VideoFastUpdatePictureHandler() time 13800283
Received a Picture Fast Update request from the other side
UI:UI msg from VidDec: S VD1 ReceivedFreezeRelease 0
RTP: Max. video packets stored = 4
RTP: Minimum/MaximumThreshold = 4 0/256, 4 0/256
RTP: Video Packet Lost!
RTP: Reseting last_seq_num from 18680 to 18681
RTP: Send FastVideoPicture_MSG
RTP: Max. video packets stored = 4
RTP: Minimum/MaximumThreshold = 4 0/256, 4 0/256
...VideoFastUpdatePictureHandler() time 13802473
Received a Picture Fast Update request from the other side
UI:UI msg from VidDec: S VD1 ReceivedFreezeRelease 0
-->cmChannelStateDisconnected(  ) -- h224 in
-->cmChannelStateIdle

***************Статискика Cisco (sh frame-relay pvc ):

PVC Statistics for interface Serial0/0 (Frame Relay DTE)

DLCI = 105, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial0/0

  input pkts 6901          output pkts 5781         in bytes 2364196  
  out bytes 2063545        dropped pkts 0           in FECN pkts 0        
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0        
  in DE pkts 0             out DE pkts 0        
  out bcast pkts 1         out bcast bytes 30        
  pvc create time 03:47:10, last time pvc status changed 03:45:21
  service policy QoS

  Service-policy output: QoS (1059)

    Class-map: VOICE (match-all) (1061/3)
      39 packets, 10214 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: access-group name VOICE (1065)
     Weighted Fair Queueing
       Strict Priority
       Output Queue: Conversation 40
       Bandwidth 37 (kbps) Burst 925 (Bytes)
       (pkts matched/bytes matched) 39/10214
       (total drops/bytes drops) 0/0

    Class-map: VIDEO (match-all) (1069/2)
      1785 packets, 1468385 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: access-group name VIDEO (1073)
     Weighted Fair Queueing
       Output Queue: Conversation 41
       Bandwidth 410 (kbps) Max Threshold 64 (packets)
       (pkts matched/bytes matched) 1785/1468385
        (depth/total drops/no-buffer drops) 0/0/0

    Class-map: class-default (match-any) (1077/0)
      3948 packets, 584500 bytes
      5 minute offered rate 0 bps, drop rate 0 bps
      Match: any  (1081)
     Weighted Fair Queueing
       Flow Based Fair Queueing
       Maximum Number of Hashed Queues 32
        (total queued/total drops/no-buffer drops)
                       0/0/0
  Output queue size 0/max total 600/drops 0
  fragment type end-to-end         fragment size 1600
  cir 512000    bc   5120      be 0         limit 640    interval 10  
  mincir 512000    byte increment 640   BECN response no
  frags 5784      bytes 2065139   frags delayed 5745      bytes delayed 2054925  
  shaping active    
  traffic shaping drops 0

*******************************************Конфигурация роутера:  

Current configuration : 7407 bytes
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
!
logging buffered 4096 debugging
logging rate-limit console 10 except errors
no logging console
no logging monitor
aaa new-model
aaa authentication login default group tacacs+ line
aaa authorization exec default group tacacs+ if-authenticated none
aaa accounting exec default start-stop group tacacs+
aaa accounting commands 15 default start-stop group tacacs+
enable secret 5 $1$e52R$ZguS7M42KsQM/AyFRM9zb.
!
ip subnet-zero
!
!
no ip finger
!
!
class-map match-all VIDEO
  match access-group name VIDEO
class-map match-all VOICE
  match access-group name VOICE
!
!
policy-map QoS
  class VOICE
    priority 37
  class VIDEO
   bandwidth 410
  class class-default
   fair-queue
!
call rsvp-sync
!
!
!
!
interface FastEthernet0/0
ip address 10.131.1.254 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0
bandwidth 512
ip address 192.168.131.2 255.255.255.252
encapsulation frame-relay IETF
frame-relay traffic-shaping
frame-relay interface-dlci 105
  class FRAME-RELAY
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
no ip address
shutdown
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.131.1
ip route 10.131.129.0 255.255.255.0 10.131.1.253
no ip http server
!
!

ip access-list extended VIDEO
permit udp any any precedence flash-override
permit udp host 10.131.1.33 any
ip access-list extended VOICE
permit udp any any precedence critical
!
map-class frame-relay FRAME-RELAY
no frame-relay adaptive-shaping
frame-relay cir 512000
frame-relay bc 5120
frame-relay be 0
frame-relay mincir 512000
service-policy output QoS
frame-relay fragment 1600
logging trap debugging
logging facility syslog
logging source-interface FastEthernet0/0
logging 10.1.0.211
tacacs-server host 10.1.2.12
snmp-server engineID local 000000090200003085F1DB40
snmp-server community rhbpbc RO
snmp-server trap-source FastEthernet0/0
snmp-server enable traps snmp authentication linkdown linkup coldstart
snmp-server enable traps isdn call-information
snmp-server enable traps isdn layer2
snmp-server enable traps hsrp
snmp-server enable traps config
snmp-server enable traps entity
snmp-server enable traps envmon
snmp-server enable traps bgp
snmp-server enable traps ipmulticast
snmp-server enable traps rsvp
snmp-server enable traps frame-relay
snmp-server enable traps rtr
snmp-server enable traps syslog
snmp-server enable traps dlsw
snmp-server enable traps dial
snmp-server enable traps dsp card-status
snmp-server enable traps voice poor-qov
snmp-server enable traps xgcp
!
voice-port 1/0/0
!
voice-port 1/0/1
!
voice-port 1/1/0
!
voice-port 1/1/1
!
dial-peer cor custom
!
!
!
dial-peer voice 1 pots
destination-pattern 7050
port 1/0/0
!
dial-peer voice 2 pots
destination-pattern 7051
port 1/0/1
!
dial-peer voice 3 voip
destination-pattern ....
session target ipv4:10.1.4.2
codec g723ar53
ip precedence 5
!
!
line con 0
password 7 110F1FD40416
transport input none
line aux 0
line vty 0 4
password 7 141111FS1F00
!
end

• Polycom&Cisco, Witus, 17:43 , 23-Май-03, (1)  
  • Polycom&Cisco, sofab, 14:53 , 30-Май-03, (2)  
    • Polycom&Cisco, Witus, 17:49 , 30-Май-03, (3)