OPERATIONAL DEFECT DATABASE
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There are increasing ingress CRC/Runts on FEX disabled host Interfaces On N2K-C2232TM-10GE that are set to 1000 Mbps either manually or auto-negotiated to 1000 Mpbs. In some cases it has been observed that this results in flapping fabric interfaces.
This issue has been observed on NX-OS 6.2(12) on N2K-C2232TM-10GE connected to an N7k parent switch. This issue will more than likely affect other platforms and versions of code. Example outputs. Note that these are interfaces with no hosts attached: N7k# show interface counters errors fex 100 -------------------------------------------------------------------------------- Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards -------------------------------------------------------------------------------- Eth101/1/1 2 0 0 2 0 0 Eth101/1/2 20 22 0 42 0 0 Eth101/1/3 5 1 0 6 0 0 Eth101/1/4 0 0 0 0 0 0 Eth101/1/5 0 0 0 0 0 0 Eth101/1/6 0 0 0 0 0 0 Eth101/1/7 0 0 0 0 0 0 Eth101/1/8 0 0 0 0 0 0 Eth101/1/9 17 19 0 36 0 0 Eth101/1/10 0 0 0 0 0 0 Eth101/1/11 13 7 0 20 0 0 Eth101/1/12 0 0 0 0 0 0 Fabric Interace will eventually begin to bounce periodically: N7k# show logging logfile | inc Act 2015 Sep 3 12:41:20 N7k %FEX-5-FEX_PORT_STATUS_NOTI: Uplink-ID 1 of Fex 101 that is connected with Ethernet3/1 changed its status from Active to Disconnected 2015 Sep 3 12:41:23 N7k %FEX-5-FEX_PORT_STATUS_NOTI: Uplink-ID 1 of Fex 101 that is connected with Ethernet3/1 changed its status from Connecting to Active 2015 Sep 3 15:49:24 N7k %FEX-5-FEX_PORT_STATUS_NOTI: Uplink-ID 1 of Fex 101 that is connected with Ethernet3/1 changed its status from Active to Disconnected 2015 Sep 3 15:49:26 N7k %FEX-5-FEX_PORT_STATUS_NOTI: Uplink-ID 1 of Fex 101 that is connected with Ethernet3/1 changed its status from Connecting to Active 2015 Sep 3 17:59:02 N7k %FEX-5-FEX_PORT_STATUS_NOTI: Uplink-ID 1 of Fex 101 that is connected with Ethernet3/1 changed its status from Active to Disconnected
*Disabling the unused FEX host interfaces.
NA
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