Hi, we have installed 4 new 2960XR switches (2 stacks interconnected with 2x10Gbit) and 2 HP VSA storage nodes. The VSA storage is spamming errors about excessive packet loss since it's configured (even when no VM's where active).
The VSA storage is connected at 10Gbit, the ESXi hosts are connected at 2x1GBit for iSCSI traffic.
The interfaces used for iSCSI to the ESXi hosts show a lot of dropped packets.
SW-CORE-01#show inter g1/0/30 | inc miss|drop|queue|errors|CRC Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 24181330 Output queue: 0/40 (size/max) 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored 0 output errors, 0 collisions, 1 interface resets 0 unknown protocol drops interface GigabitEthernet1/0/30 description ** ESX05 VMNIC0 ISCSI ** switchport trunk native vlan 114 switchport trunk allowed vlan 100,101,114-117 switchport mode trunk logging event trunk-status flowcontrol receive on
Dropped frames in queue 2
Interface Gi1/0/30 TxQueue Drop Statistics Queue 0 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 1 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 Queue 2 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 24173554 Queue 3 Weight 0 Frames 0 Weight 1 Frames 0 Weight 2 Frames 0 show mls qos queue-set Queueset: 1 Queue : 1 2 3 4 ---------------------------------------------- buffers : 15 25 40 20 threshold1: 100 125 100 60 threshold2: 100 125 100 150 reserved : 50 100 100 50 maximum : 200 400 400 200 Queueset: 2 Queue : 1 2 3 4 ---------------------------------------------- buffers : 25 25 25 25 threshold1: 100 200 100 100 threshold2: 100 200 100 100 reserved : 50 50 50 50 maximum : 400 400 400 400
There is a MLS qos configuration active that is not done by me;
mls qos map cos-dscp 0 8 16 24 32 46 48 56 mls qos srr-queue output cos-map queue 1 threshold 3 4 5 mls qos srr-queue output cos-map queue 2 threshold 1 2 mls qos srr-queue output cos-map queue 2 threshold 2 3 mls qos srr-queue output cos-map queue 2 threshold 3 6 7 mls qos srr-queue output cos-map queue 3 threshold 3 0 mls qos srr-queue output cos-map queue 4 threshold 3 1 mls qos srr-queue output dscp-map queue 1 threshold 3 32 33 40 41 42 43 44 45 mls qos srr-queue output dscp-map queue 1 threshold 3 46 47 mls qos srr-queue output dscp-map queue 2 threshold 1 16 17 18 19 20 21 22 23 mls qos srr-queue output dscp-map queue 2 threshold 1 26 27 28 29 30 31 34 35 mls qos srr-queue output dscp-map queue 2 threshold 1 36 37 38 39 mls qos srr-queue output dscp-map queue 2 threshold 2 24 mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53 54 55 mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61 62 63 mls qos srr-queue output dscp-map queue 3 threshold 3 0 1 2 3 4 5 6 7 mls qos srr-queue output dscp-map queue 4 threshold 1 8 9 11 13 15 mls qos srr-queue output dscp-map queue 4 threshold 2 10 12 14 mls qos queue-set output 1 threshold 1 100 100 50 200 mls qos queue-set output 1 threshold 2 125 125 100 400 mls qos queue-set output 1 threshold 3 100 100 100 400 mls qos queue-set output 1 threshold 4 60 150 50 200 mls qos queue-set output 1 buffers 15 25 40 20
Anyone know what I can do to stop the packet loss on the iSCSI traffic?
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