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CONTAP-604728: ifstat -z -a will not clear values on ports with external card - no issue embedded ports

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Issue

ifstat -z -a will not clear values on ports with external card - no issue embedded ports
SFP Vendor: CISCO-MOLEX
SFP Part Number: 74752-9520
SFP Serial Number: MOC16300K2C

> ifstat e4a
– interface e4a (7 days, 3 hours, 49 minutes, 16 seconds) –
RECEIVE
Total frames: 403m | Frames/second: 653 | Total bytes: 251g
Bytes/second: 405k | Total errors: 781k | Errors/minute: 76
::> ifstat -z -a
atsm-namc01c2-02> ifstat e4a
– interface e4a (0 hours, 0 minutes, 3 seconds) –
RECEIVE
Total frames: 1410 | Frames/second: 470 | Total bytes: 126k
Bytes/second: 42251 | Total errors: 781k | Errors/minute: 15622k - high value

Counters OK for embedded ports
> ifstat e0e
– interface e0e (0 hours, 0 minutes, 15 seconds) –
RECEIVE
Total frames: 1847 | Frames/second: 123 | Total bytes: 202k – LOOKS GOOD
Bytes/second: 13485 | Total errors: 0 | Errors/minute: 0

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