Is it normal for a Cisco 4506, SUP7 series switch to register huge software packet drops at small intervals.
While this data was captured no configuration changes were made on the device.
Two different results as shown below were taken at an interval of 8-10 seconds.
SW1#sh platform software drop-port
Drop Port Software State
Dequeue Enabled : True
DropQueue Water mark Reg : 0x8000600038001D4C
DropQueue Water mark Reg : 0x7FE32010
(Empty, PreEmpty, Head:0x795, Tail:0x795)
DropActivityCount : 5657650245
DropOverrunCount : 0
XppPfmParityErrorPacketDropCount : 0
XppTmmPtdDropPortCount : 5942551652
XppPrmRwExceptionDropCount : 0
XppPrmValidationDropCount : 0
XppPrmIpSaValidationDropCount : 0
XppPrmTtlExceptionDropCount : 0
XppPrmSopErorrPacketDropCount : 0
Drop Event Reason Packets Dropped
----------------- ---------------
SptDrop 5814804576
SrcHitDrop 203
InpL2AclDrop 642
L2FwdDrop 1235
BridgeToRxPortDrop 368686694
OutPolicerDrop 5
TxQueFullDrop 4854
DblDrop 3040640
SW1#sh platform software drop-port
Drop Port Software State
Dequeue Enabled : True
DropQueue Water mark Reg : 0x8000600038001D4C
DropQueue Water mark Reg : 0x7FE32010
(Empty, PreEmpty, Head:0x12AA, Tail:0x12AA)
DropActivityCount : 5657661266
DropOverrunCount : 0
XppPfmParityErrorPacketDropCount : 0
XppTmmPtdDropPortCount : 5942562673
XppPrmRwExceptionDropCount : 0
XppPrmValidationDropCount : 0
XppPrmIpSaValidationDropCount : 0
XppPrmTtlExceptionDropCount : 0
XppPrmSopErorrPacketDropCount : 0
Drop Event Reason Packets Dropped
----------------- ---------------
SptDrop 5814812427
SrcHitDrop 203
InpL2AclDrop 642
L2FwdDrop 1235
BridgeToRxPortDrop 368691239
OutPolicerDrop 5
TxQueFullDrop 4854
DblDrop 3040640
The CPU utilization :-
SW1#sh processes cpu sorted | ex 0.00%
Core 0: CPU utilization for five seconds: 10%; one minute: 8%; five minutes: 9%
Core 1: CPU utilization for five seconds: 17%; one minute: 16%; five minutes: 15%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
8173 2527242 24647792 209 12.35 11.23 11.12 0 iosd
11658 18401 16719949 971 1.52 1.31 1.32 0 ffm
11026 1070519 32486621 148 0.04 0.04 0.04 0 cpumemd
The counters details are as shown below:-
SW1#sh interfaces gigabitEthernet 5/43 counters detail
Port InBytes InUcastPkts InMcastPkts InBcastPkts
Gi5/43 618105 3072 13 19
Port OutBytes OutUcastPkts OutMcastPkts OutBcastPkts
Gi5/43 1905946 4809 4593 6438
Port InPkts 64 OutPkts 64 InPkts 65-127 OutPkts 65-127
Gi5/43 840 3582 1640 10469
Port InPkts 128-255 OutPkts 128-255 InPkts 256-511 OutPkts 256-511
Gi5/43 234 1247 110 141
Port InPkts 512-1023 OutPkts 512-1023
Gi5/43 88 87
Port InPkts 1024-1518 OutPkts 1024-1518 InPkts 1519-1548 OutPkts 1519-1548
Gi5/43 192 314 0 0
Port Tx-Bytes-Queue-1 Tx-Bytes-Queue-2 Tx-Bytes-Queue-3 Tx-Bytes-Queue-4
Gi5/43 51796 0 0 518
Port Tx-Bytes-Queue-5 Tx-Bytes-Queue-6 Tx-Bytes-Queue-7 Tx-Bytes-Queue-8
Gi5/43 8624 112261 305714 1427663
(Rest 0 values have not been shown).
The module is - WS-X4748-RJ45V+E.
