Hi Chris, Thanks for the response. The switch is running with OS version 4.2(7e) and the port-channel configuration is provided below: port-channel 31 is trunking Admin port mode is E, trunk mode is on snmp link state traps are enabled Port mode is TE Port vsan is 1 Speed is 24 Gbps Trunk vsans (admin allowed and active) (1,5,431,435) Trunk vsans (up) (1,5,431,435) Trunk vsans (isolated) () Member[2] : fc1/2 Member[3] : fc1/3 Member[4] : fc1/4 Member[5] : fc1/5 Member[6] : fc1/6 Please let me know in case any further details required. Regds, Vinay
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Hi We have one port channel configured in our Customer environment. This port channel has been configured with 6x4Gbps ports inside it. One of the switch port started flapping (up & down) continuously, which caused multiple alerts on many hosts as well as drastic performance slowness on one of the Business Critical application. It caused a major issue and later on after disabling this port administratively, the issue got resolved. Could you let me know the cause of major impact and port-channel behavior in such rare cases, where because of one port flapping, whole port channel got affacted ? Is it a expected behavor of port-channel of kind of software bug in Cisco MDS 9513 switches running SAN OS ?
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