Cisco Bug: CSCvu41929 - there is link down event in syslog, but no link up event in syslog
Jul 01, 2020
- Cisco MDS 9000 Series Multilayer Switches
Known Affected Releases
Symptom: MDS 9148S port-channel 120 members(FC1/45-48) kickstart: version 6.2(11c) system: version 6.2(11c) fc1/45 1 E on trunking swl TE 8 120 fc1/46 1 E on trunking swl TE 8 120 fc1/47 1 E on trunking swl TE 8 120 fc1/48 1 E on trunking swl TE 8 120 The customer has a port FC1/48 which is member of port-channel 120,that shows down in the logging log at 20:10:58 , customer said that when he logged in to MDS at 8:30 pm, he used the show interface brief command to find that the port was up ,but not show up in the logging log 2020 May 26 20:10:58.987 S-HHA4B-PRI-AS23 %PORT-CHANNEL-5-PORT_DOWN: port-channel120: fc1/48 is down <<<<<<<<<<<just show port down this time 052620 211557 819210 (5F2F0) E_IPS_PM_DIS IPS_LINK_UP (0) 052620 201059 092160 (000B) E_IPS_SYNC_ACQ IPS_LINK_UP (0) 052620 201058 986076 (0000) E_IPS_SIG_LOSS_INTR IPS_LINK_UP (0) 052620 201058 986035 (8B6DC5C6) E_IPS_SYNC_LOSS_INTR IPS_LINK_UP (0) Conditions: MDS9148s 6.2(11c) MDS9513 5.2(8h) fc1/48 @ 9148s went down because of signal loss @ 05/26/20 20:10:58.986076. the signal came back after 104 ms and the port was back online.
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