I'm having an issue where I'm getting dropped packets, but I'm not seeing any trace of them being dropped, except under the show interface multilink total output drop. Can anyone tell me how I can stop these packets from being dropped or at least give me an idea where I can look to stop these? I'm getting only 200-400 a day so this isn't dentramental to the network, but I'd at least like to know what packets they are and why they are being dropped. Also the 55 drops under the class-default are old and have not increased while the total dropped output has. Current configuration : 4873 bytes ! ! Last configuration change at 15:21:17 UTC Tue Nov 6 2007 ! NVRAM config last updated at 15:55:02 edt Wed Oct 24 2007 ! version 12.3 service timestamps debug uptime service timestamps log uptime service password-encryption ! hostname C2651-NY-1 ! boot-start-marker boot-end-marker ! enable secret 5 enable password 7 ! clock summer-time edt recurring 2 Sun Mar 2:00 1 Sun Nov 2:00 no network-clock-participate slot 1 no network-clock-participate wic 0 no aaa new-model ip subnet-zero ip cef ! ! ! ! ! ! ! ! ! ! ! ! ! ! fax interface-type fax-mail ! ! controller T1 1/0 framing esf linecode b8zs channel-group 0 timeslots 1-24 speed 64 ! class-map match-all FSS-traffic match access-group 104 class-map match-all voice-signaling match access-group 103 class-map match-all voice-traffic match access-group 102 ! ! policy-map VOICE-POLICY class voice-signaling bandwidth 64 class voice-traffic priority 1024 class FSS-traffic shape average 512000 bandwidth 400 queue-limit 512 class class-default fair-queue 256 queue-limit 96 shape average 1024000 ! buffers small permanent 300 buffers small max-free 400 buffers middle permanent 200 buffers middle max-free 400 buffers big permanent 100 buffers big max-free 400 buffers verybig permanent 25 buffers verybig max-free 40 buffers large permanent 10 buffers large max-free 40 ! ! ! interface Multilink1 ip address 10.255.255.2 255.255.255.0 ip accounting output-packets no ip route-cache cef no ip route-cache ip ospf authentication message-digest ip ospf message-digest-key 1 md5 7 ip ospf cost 50 no ip mroute-cache load-interval 30 no cdp enable ppp multilink ppp multilink fragment delay 10 ppp multilink interleave ppp multilink group 1 service-policy output VOICE-POLICY hold-queue 1000 out ! interface FastEthernet0/0 ip address 10.1.10.250 255.255.255.0 ip ospf authentication ip ospf authentication-key 7 10625A490B43000F ip ospf priority 100 speed 100 full-duplex ! interface Serial0/0 no ip address encapsulation ppp no ip route-cache cef no ip route-cache no ip mroute-cache load-interval 30 no fair-queue ppp multilink ppp multilink group 1 ppp multilink multiclass ! interface FastEthernet0/1 ip address 10.1.11.250 255.255.255.0 ip ospf authentication ip ospf authentication-key 7 062A5C71421A1B1D ip ospf cost 2 ip ospf priority 100 speed 100 full-duplex ! interface Serial0/1 no ip address encapsulation ppp no ip route-cache cef no ip route-cache no ip mroute-cache load-interval 30 no fair-queue ppp multilink ppp multilink group 1 ppp multilink multiclass ! interface Serial1/0:0 no ip address encapsulation ppp no ip route-cache cef no ip route-cache load-interval 30 no fair-queue ppp multilink ppp multilink group 1 ppp multilink multiclass ! router eigrp 100 auto-summary no eigrp log-neighbor-changes ! router ospf 10 router-id 10.1.10.250 log-adjacency-changes network 10.1.10.0 0.0.0.255 area 0.0.0.0 network 10.1.11.0 0.0.0.255 area 0.0.0.0 network 10.255.255.0 0.0.0.255 area 10.2.1.0 ! no ip http server ip classless ip route 0.0.0.0 0.0.0.0 10.1.10.254 ip route 0.0.0.0 0.0.0.0 10.1.10.253 ! ! access-list 102 permit udp any any range 16384 32767 access-list 103 permit tcp any eq 1720 any access-list 103 permit tcp any any eq 1720 access-list 104 permit ip host 10.1.12.14 any access-list 104 permit tcp any eq smtp any access-list 104 permit tcp any eq www any ! snmp-server community E1sn3r2RO RO snmp-server community E1sn3r2RW RW snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart snmp-server enable traps tty snmp-server enable traps xgcp snmp-server enable traps isdn call-information snmp-server enable traps isdn layer2 snmp-server enable traps isdn chan-not-avail 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 pim neighbor-change rp-mapping-change invalid-pim-message snmp-server enable traps ipmulticast snmp-server enable traps msdp snmp-server enable traps rsvp snmp-server enable traps frame-relay snmp-server enable traps frame-relay subif 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 ipmobile snmp-server enable traps voice poor-qov snmp-server enable traps dnis snmp-server host 10.1.1.106 E1sn3r2RO snmp-server host 10.1.14.14 E1sn3r2RO ! ! ! dial-peer cor custom ! ! ! ! line con 0 line aux 0 line vty 0 4 session-timeout 30 password 7 login line vty 5 15 password 7 login ! ntp clock-period 17208677 ntp server 10.1.10.101 version 2 ! end ------------------------------------------------------------------------ show int mult 1 Multilink1 is up, line protocol is up Hardware is multilink group interface Internet address is 10.255.255.2/24 MTU 1500 bytes, BW 4624 Kbit, DLY 100000 usec, reliability 255/255, txload 26/255, rxload 11/255 Encapsulation PPP, LCP Open, multilink Open Open: IPCP, loopback not set Keepalive set (10 sec) DTR is pulsed for 2 seconds on reset Last input 00:00:05, output never, output hang never Last clearing of "show interface" counters 1d06h Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 483 Queueing strategy: Class-based queueing Output queue: 0/1000/96/55/17622 (size/max total/threshold/drops/interleaves) Conversations 0/91/256 (active/max active/max total) Reserved Conversations 2/2 (allocated/max allocated) Available Bandwidth 1980 kilobits/sec 30 second input rate 202000 bits/sec, 142 packets/sec 30 second output rate 483000 bits/sec, 154 packets/sec 5817734 packets input, 1312412982 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 6260320 packets output, 2925087801 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions --------------------------------------------------------------------- show polic int mult 1 Multilink1 Service-policy output: VOICE-POLICY Class-map: voice-signaling (match-all) 108 packets, 27323 bytes 30 second offered rate 0 bps, drop rate 0 bps Match: access-group 103 Queueing Output Queue: Conversation 265 Bandwidth 64 (kbps) Max Threshold 64 (packets) (pkts matched/bytes matched) 108/27323 (depth/total drops/no-buffer drops) 0/0/0 Class-map: voice-traffic (match-all) 2612441 packets, 532703620 bytes 30 second offered rate 175000 bps, drop rate 0 bps Match: access-group 102 Queueing Strict Priority Output Queue: Conversation 264 Bandwidth 1024 (kbps) Burst 25600 (Bytes) (pkts matched/bytes matched) 2612442/532703824 (total drops/bytes drops) 0/0 Class-map: FSS-traffic (match-all) 927050 packets, 453377167 bytes 30 second offered rate 4000 bps, drop rate 0 bps Match: access-group 104 Traffic Shaping Target/Average Byte Sustain Excess Interval Increment Rate Limit bits/int bits/int (ms) (bytes) 512000/512000 3200 12800 12800 25 1600 Adapt Queue Packets Bytes Packets Bytes Shaping Active Depth Delayed Delayed Active - 0 609300 188529195 61744 75337650 no Queueing Output Queue: Conversation 266 Bandwidth 400 (kbps) Max Threshold 512 (packets) (pkts matched/bytes matched) 192611/90196289 (depth/total drops/no-buffer drops) 0/0/0 Class-map: class-default (match-any) 2720064 packets, 1946615658 bytes 30 second offered rate 419000 bps, drop rate 0 bps Match: any Queueing Flow Based Fair Queueing Maximum Number of Hashed Queues 256 (total queued/total drops/no-buffer drops) 0/55/0 Traffic Shaping Target/Average Byte Sustain Excess Interval Increment Rate Limit bits/int bits/int (ms) (bytes) 1024000/1024000 6400 25600 25600 25 3200 Adapt Queue Packets Bytes Packets Bytes Shaping Active Depth Delayed Delayed Active - 0 1859884 1272004341 848922 929489465 no
The dropped packets have gotten worse and is starting to affect network performance, if anyone has any insight where I should be looking it would be most appreciated.
Alright I noticed the drop rate bps went up under the FSS class and that must not be recorded under the total drops of the class. I'm guessing this is because queued packets aren't dropping, my packets are being dropped before being queued. And so it is only being recorded under the total dropped under the show int multilink.
