Wonky port counters on Utah Cloudlab hp090 and hp091
We get frequent "excessive traffic" reports for hp090 and hp091 w.r.t. transmitted packets, e.g.:
Node:port Expt Pkts/sec Mb/sec When hp091:eth2 cops-PG0/tapir 6732659 6 2019-07-02 08:59:48 for 638 sec
almost 7M pps for 6M bps for 10 minutes. This would indicate that each packet was, on average, less than one bit. There appears to be some discrepancy between packet counters on the Dell S4048-ON control switch both by the CLI or SNMP. For example, hp091's switch port shows:
Input Statistics: 1536874051 packets, 162913777286 bytes 1242179 64-byte pkts, 1512599412 over 64-byte pkts, 4230559 over 127-byte pkts 587130 over 255-byte pkts, 2005787 over 511-byte pkts, 16208984 over 1023-byte pkts 198618 Multicasts, 10872 Broadcasts, 289299473137 Unicasts 0 runts, 0 giants, 256 throttles 0 CRC, 0 overrun, 0 discarded
Note that the first line shows 1536874051 total packets and yet the unicast pack count is almost 200x larger. It is those individual counters that we collect with
portstats and the control net monitor program.