mc-lag loop detection

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m00n
Member
Posts: 28
Joined: 12 Apr 2011 08:26
Location: Poland

mc-lag loop detection

Post by m00n » 02 Feb 2012 11:50

Hello
Mc-lag detect loop in my network and bring down aggregate. I have a big problem :/ How can i detect where is problem and resolve where is loop ?

Log output

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Feb  2 14:39:11 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=1 action=Port Down
Feb  2 14:39:11 (none) local0.info swlogd: mcm config    info(5) CMM:mcmCMN_generate_failure_trap_cb@3006: Generate trap 80
Feb  2 14:39:11 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_peer_cmm_ni_rx@826: Process msg (trapInfo2CMM, len 16, src 0/2)
Feb  2 14:39:11 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=2 action=Port Down
Feb  2 14:39:11 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_client_rx_vm@1645: VM event 0x200 vlan=13-13- duplicated 3 times!
Feb  2 14:39:11 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=3 action=Port Down
Feb  2 14:39:11 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=4 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=5 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=6 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=7 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_process_vlan_event_range@1620: VM vlan=13 event x8000- duplicated 4 times!
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=8 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=9 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=10 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=11 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=12 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=13 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=14 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=15 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=16 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=17 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=18 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=19 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_client_rx_vm@1645: VM event 0x200 vlan=14-14- duplicated 1 times!
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=20 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=21 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=22 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=23 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=24 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: stp _AGRt info(5)  LA_AGGDOWN agg_ifdx=40000096
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcManageLagEvent:113] VFC Rx AGG down for lagId 96 gPort 128
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:527] #VFC gP 128 (2/1) spd 0 egrBw 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:550] gport 0x80 PortRate 0 Invalid, Speed 0 egrBw 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 0 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcPMEventsRegister:575] Port Manager Registrations Done- duplicated 1 times!
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 1 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 2 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 3 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 4 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 5 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 6 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcHandleSchedulerCfgMsg:579] cos 7 portRate 0 qType 8 weight 0 cir 0 pir 0
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcConfigProfile0:319] Configured Profile0 for gport 128- duplicated 1 times!
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcSendToNI:112] TX to NI 2 sock 28 length 184 - duplicated 6 times!
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcSendConfigQSapStatsToNi:530] TX VFC_MSG_QSAP_CREATE to NI 1 - duplicated 4 times!
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcSendToNI:112] TX to NI 3 sock 29 length 184 - duplicated 6 times!
Feb  2 14:39:12 (none) local0.info swlogd: vfc main info(5) [vfcSendConfigQSapStatsToNi:530] TX VFC_MSG_QSAP_CREATE to NI 2 - duplicated 4 times!
Feb  2 14:39:12 (none) local0.info swlogd: LinkAgg main info(5) Aggregate Down . port: 2001 agg: 96
Feb  2 14:39:12 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_process_vlan_event_range@1620: VM vlan=14 event x8000- duplicated 4 times!
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=25 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=26 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=27 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=28 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=29 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=30 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=31 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=32 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_client_rx_vm@1645: VM event 0x200 vlan=15-15- duplicated 3 times!
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=33 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=34 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=35 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=36 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=37 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_process_vlan_event_range@1620: VM vlan=15 event x8000- duplicated 4 times!
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=38 action=Port Down
Feb  2 14:39:12 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=39 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=40 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_client_rx_vm@1645: VM event 0x400 vlan=0-0
Feb  2 14:39:16 (none) local0.info swlogd: mcm vlan_mgr  info(5) CMM:mcmCMM_process_vlan_event_range@1513: Vlan event=x400 vlan=0-0 ifIdx=40000096-40000096 vpaFlg=1
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=41 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=42 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=43 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=44 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=45 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=46 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=47 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_tx@1711: Dst (ch 0, Local slot, port 37091) - Msg (0x890002, len 96)- duplicated 2 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=48 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=49 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_peer_cmm_ni_rx@826: Process msg (globalConsistStatus2CMM, len 32, src 0/3)- duplicated 2 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=50 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm config    info(5) CMM:process_status_cmm@4470: Set oper status (val 0, src 3)- duplicated 3 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=51 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=52 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_peer_cmm_ni_rx@826: Process msg (globalStatus2CMM, len 36, src 0/3)- duplicated 4 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=53 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=54 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=55 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_tx@1711: Dst (ch 0, Local slot, port 37118) - Msg (0x890002, len 96)- duplicated 2 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=56 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=57 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_tx@1711: Dst (ch 0, Local slot, port 37136) - Msg (0x890002, len 96)- duplicated 2 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=58 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=59 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_tx@1711: Dst (ch 0, Local slot, port 37182) - Msg (0x890002, len 96)- duplicated 2 times!
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=60 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=61 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=62 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=63 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=64 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=65 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=66 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=67 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=68 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=69 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=70 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=71 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=72 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=73 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=74 action=Port Down
Feb  2 14:39:16 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=75 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=76 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=77 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=78 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=79 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=80 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=81 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=82 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=83 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=84 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=85 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=86 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=87 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=88 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=89 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=90 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=91 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=92 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=93 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm ipc       info(5) CMM:mcmCMM_mcipc_peer_cmm_cmm_rx@1067: Process msg (updateMclagConsist2CMM, len 1020, src 1/65)- duplicated 2 times!
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=94 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=95 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm mip       info(5) CMM:mcmCMM_client_rx_mip@1230: Msg enqueue success (320 bytes)- duplicated 1 times!
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=96 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=97 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=98 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=99 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=100 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=101 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=102 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=103 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=104 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=105 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=106 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=107 action=Port Down
Feb  2 14:39:20 (none) local0.info swlogd: mcm loop det  info(5) CMM:process_status_cmm@4541: Loop Detected port=2/1 vlan=13 count=108 action=Port Down
Feb  2 15:09:26 (none) local0.alert swlogd: MIP_GATEWAY mipgwd alert(3) MIP Set/Setf(4) (APPID_CLI(67/0) -> APPID_AAA(20)) values to be sent:

Network & UnixAdministrator, The State School of Higher Professional Education in Elbląg, ACFE

devnull
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Joined: 07 Sep 2010 10:16
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Re: mc-lag loop detection

Post by devnull » 03 Feb 2012 07:29

Not really.. it is attached to 2/1 (in vlan 13?)

But you can't see on which port of the remote switch this has occured
happend to me once, with a VOIP Phone together with a "non stp capable" dlink switch bridging two vlans. Shut down a whole building.

You can of course disable loop detection but you have a loop then, which will stress the whole network. you can use divide and conquer then (disable half of the switch -> Problem gone? -> loop in the shutdown part. Problem not gone -> Loop in other half. rinse repeat..)

Don't forget the Hammer of Justice (http://www.amazon.com/Medieval-Hammer-T ... B004V5XMOG), when you found the one that created the loop.

I'd be interested in other opinionsa, as this really sucks. A loop somewhere -> Whole lag with all attached ports is shut down.

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